CN111523026A - User portrait update method, system, network device and storage medium - Google Patents

Abstract

Embodiments of the present invention relate to the field of communication technologies, and disclose a method for updating user portraits, including: acquiring a user's behavior record and recording it in a behavior record table in the terminal; calculating at preset time intervals according to the behavior record table and update the first user portrait of the user in the terminal, and calculate the portrait difference value of the first user portrait, wherein the portrait difference value is compared with the difference value of the user portrait at the previous moment; The portrait difference value is sent to the server, so that the server can update the second user portrait of the user in the server according to the portrait difference value. The embodiments of the present invention also provide a user portrait updating system, network device and storage medium. The user portrait updating method, system, network device and storage medium provided by the embodiments of the present invention make the calculation of the user portrait occupy less resources of the server.

Description

User portrait update method, system, network device and storage medium

technical field

The present invention relates to the field of communication technologies, and in particular, to a method, a system, a network device and a storage medium for updating a user portrait.

Background technique

User portrait is a labelled user model abstracted from information such as user social attributes, living habits and consumption behavior, which can be used to push information content or assist in product promotion and marketing.

The existing user portrait calculation and use modes are: (1) users use terminal products (such as web pages or APPs) to watch videos, listen to songs, etc.; (2) servers on edge nodes collect user behavior records to form user behavior logs , and upload the user behavior logs to the central server for storage in real time or in near real time; (3) Deploy a user portrait program on the central server to analyze and calculate the collected user behavior logs to generate user portraits; (4) Use content services based on user portraits Cluster for marketing strategy or content recommendation, etc.

However, the inventor found that the prior art has at least the following problems: due to the huge number of users, the central server needs to use a large number of storage resources to store user behavior logs; In the method of calculating user portraits in batches on a regular basis, the central server needs to use a lot of computing resources, resulting in the current user portrait calculation method occupying a lot of server resources.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present invention is to provide a user portrait update method, system, network device and storage medium, so that the calculation of the user portrait occupies less server resources.

In order to solve the above technical problems, embodiments of the present invention provide a user portrait update method, which is applied to a terminal, including: acquiring a user's behavior record and recording it in a behavior record table in the terminal; Calculate and update the first user portrait of the user in the terminal at intervals; calculate the portrait difference value of the first user portrait, wherein the portrait difference value is compared with the difference value of the user portrait at the previous moment; send the portrait difference value to the server , so that the server can update the second user portrait of the user in the server according to the difference value of the portrait.

Embodiments of the present invention also provide a user portrait updating system, including a terminal and a server; the terminal is used to obtain a user's behavior record and record it in a behavior record table in the terminal, and calculates at preset time intervals according to the behavior record table And update the first user portrait of the user in the terminal, calculate the portrait difference value of the first user portrait, and send the portrait difference value to the server, where the portrait difference value is compared with the difference value of the user portrait at the previous moment; The terminal is used to update the second user portrait of the user in the server according to the portrait difference value.

Embodiments of the present invention also provide a network device, comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by at least one processor. One processor executes, so that at least one processor can execute the above-mentioned user portrait updating method.

Embodiments of the present invention also provide a computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, the above-mentioned method for updating a user portrait is implemented.

Compared with the prior art, the embodiment of the present invention obtains the user's behavior record through the terminal and records it in the behavior record table in the terminal, so that the user's behavior record data can be saved in the terminal, so that the server does not need to deploy a large number of storage resources Store behavior record data; by calculating and updating user portraits on the terminal, the server does not need to deploy a large number of computing resources to calculate user portraits, which occupies less resources on the server; and update the terminal by calculating and updating the terminal at preset time intervals. and the user portrait in the server, the update frequency of the user portrait in the server can be reduced, and the resource occupation of the server can be further reduced; and when updating the user portrait in the server, the difference value of the portrait is used to update, The bandwidth requirement for data transmission between the terminal and the server can be reduced.

In addition, before acquiring the user's behavior record and recording it in the behavior record table in the terminal, it also includes: acquiring the timestamp of the first user portrait as the first timestamp, and acquiring the timestamp of the second user portrait as the second timestamp ; If the first time stamp is greater than the second time stamp, send the first user portrait to the server for the server to update the second user portrait according to the first user portrait; if the first time stamp is less than the second time stamp, then Obtain the second user portrait from the server, and update the first user portrait according to the second user portrait. By comparing the timestamps of the user portraits in the terminal and the server, and updating the user portraits in the terminal or the server after the comparison, the synchronization of the user portraits in the terminal and the server can be realized, which is conducive to the subsequent use of portrait difference values. The calculation and update of the user portrait ensures the accuracy of the calculation of the user portrait; at the same time, through the synchronization of the user portrait in the terminal and the server, the user can easily use the same application program in multiple terminals, and can also be used in the terminal or the server. After the user portrait is lost, another user portrait can be used as a backup to restore the user portrait.

In addition, the preset time interval is a dynamic time interval, and the dynamic time interval is negatively correlated with the transmission speed of the server. Update the user portraits in the terminal and the server according to the dynamic time interval, which can match the network transmission environment and the processing capability of the server, and realize the dynamic control of the update frequency of the user portrait in the server, so that the transmission speed on the server is slow. When the delay is large, the update frequency of the user portrait in the server is reduced to reduce the load of the server; when the transmission speed of the server is fast and the response is fast, the update frequency of the user portrait in the server is increased. The data of the user portrait is sent to the server at a fast speed.

In addition, the user portrait update method further includes: calculating the dynamic time interval according to the following calculation formula:

Δt=t ₀ −t ₀ *α ^1/R ;

Among them, Δt is the dynamic time interval, t ₀ is the preset maximum time interval, α is a constant and 0<α<1, and R is the transmission speed of the server.

In addition, the user portrait updating method further includes: when the behavior record data in the behavior record table is updated, starting the calculation of the duration of the dynamic time interval. When the behavior record data is updated, the calculation of the duration of the dynamic time interval is started, and then the user portrait of the terminal is calculated and updated according to the dynamic time interval. The user portrait can be calculated and updated according to the actual usage of the user, reducing the occupation of terminal resources. .

In addition, after calculating and updating the first user portrait of the user in the terminal at preset time intervals according to the behavior record table, the method further includes: deleting the behavior record data used for updating the first user portrait in the behavior record table; if the behavior record table If the behavior record data in is empty, the calculation of the duration of the dynamic interval is stopped. Deleting the behavior record data participating in the update of the first user portrait in the behavior record table can reduce the occupation of terminal storage resources; when the behavior record data is empty, stop the calculation of the duration of the dynamic time interval, which can stop the calculation and calculation of the first user portrait. Update, reduce the occupation of terminal computing resources.

In addition, after sending the portrait difference value to the server so that the server can update the second user portrait of the user in the server according to the portrait difference value, the method further includes: obtaining a result of updating the second user portrait by the server, if the result is an update Failure, then use the portrait difference value as the first portrait difference value; Obtain the portrait difference value calculated next time as the second portrait difference value; Combine the first portrait difference value with the second portrait difference value to obtain the third portrait difference value; The third portrait difference value is sent to the server, so that the server can update the second user portrait according to the third portrait difference value. When the result of the second user update is failure, it indicates that the network environment of the server is poor or the processing capability is insufficient. If the retransmission is performed immediately, it will fail with a high probability. If the retransmission is set after a period of time, the terminal and The number of times the server transmits data; therefore, updating the second user portrait in the server after merging the failed update portrait difference value with the next calculated portrait difference value can improve the update success rate of the second user portrait, and can Reduce the transmission times of user portrait data and reduce the occupation of server resources.

Description of drawings

One or more embodiments are exemplified by the pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments.

1 is a schematic flowchart of a method for updating a user portrait provided by a first embodiment of the present invention;

2 is an example diagram of a user portrait in the user portrait updating method provided by the first embodiment of the present invention;

Fig. 3 is the principle structure schematic diagram of user portrait update in the prior art;

4 is a schematic diagram of the principle structure of a user portrait updating method provided by the first embodiment of the present invention;

5 is a schematic flowchart of a method for updating a user portrait provided by a second embodiment of the present invention;

Fig. 6 is the specific flow chart of the user portrait update method provided by the second embodiment of the present invention;

7 is a schematic structural diagram of a user portrait updating system provided by a third embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a network device according to a fourth embodiment of the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, each embodiment of the present invention will be described in detail below with reference to the accompanying drawings. However, those of ordinary skill in the art can appreciate that, in the various embodiments of the present invention, many technical details are set forth in order for the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the present application can be realized.

The first embodiment of the present invention relates to a method for updating a user portrait, which is applied to a terminal. The user's behavior record is obtained and recorded in a behavior record table in the terminal, and the behavior record table is calculated and updated at preset time intervals according to the behavior record table. The first user portrait of the user; calculate the portrait difference value of the first user portrait; send the portrait difference value to the server, so that the server can update the second user portrait of the user in the server according to the portrait difference value. Saving user behavior records and calculating user portraits on the terminal can make the server do not need to deploy a large number of storage resources to record user behavior records, and does not need to deploy a large number of computing resources to calculate user portraits. and updating the user portraits in the terminal and the server according to the preset time interval can reduce the update frequency of the user portraits in the server and further reduce the occupation of resources on the server; and, when updating the user portraits in the server, The update is performed in the form of the differential value of the portrait, which can reduce the bandwidth requirement for data transmission between the terminal and the server.

The user portrait update method provided by the embodiment of the present invention is applied to a terminal, that is, the execution subject is a terminal, wherein the terminal may include a terminal such as a mobile phone, a tablet computer, a personal computer, and the like. Specifically, it may be an application program on a terminal, for example, an APP on a mobile phone.

The specific process of the user portrait update method provided by the embodiment of the present invention is shown in FIG. 1 , and specifically includes the following steps:

S101: Acquire a user's behavior record and record it in a behavior record table in the terminal.

Among them, the behavior record of the user is the behavior record when the user uses the application program on the terminal. For example, when a user listens to music through a mobile phone APP, the user's behavior record may be the user's behavior record of playing, commenting, and collecting music resources.

Specifically, when the user uses the application program of the terminal, the terminal obtains the user's behavior record through the application program and records it in a preset behavior record table. The behavior records recorded in the behavior record table can be set according to actual needs, for example, the ID of the playback resource, the playback duration, the number of playbacks, etc., which are not specifically limited here. An example of a behavior record sheet is shown in Table 1 below:

Table 1

Program ID behavior type Use time End Time 68001 watch 78 1568706061 68321 browse 5 1568706091

In Table 1, the "end time" is the unix timestamp, which is the number of seconds elapsed since January 1, 1970 (midnight in UTC/GMT), regardless of leap seconds.

S102: Calculate and update the first user portrait of the user in the terminal at preset time intervals according to the behavior record table.

The preset time interval can be set according to actual needs, and no specific limitation is made here. It can be understood that when the preset time interval is short, the update frequency of the first user portrait of the terminal and the second user portrait in the server is relatively high; when the preset time interval is long, the first user portrait and the second user portrait are updated more frequently. User portraits are updated less frequently.

Please refer to FIG. 2 , which is a specific example diagram of a user portrait. The user portrait includes a portrait type identification field, a portrait timestamp identification field, and a portrait label field. Among them, the portrait type identification field is used to identify whether the user portrait is a terminal user portrait or a server user portrait, that is, corresponding to the first user portrait and the second user portrait respectively; the portrait timestamp identification field is used to identify the time when the user portrait is calculated or updated ; The portrait label field may include a label ID (that is, the above-mentioned content label), label value and label score, and store the user's specific portrait label, label value and score. Optionally, in order to facilitate the calculation of the user portrait, when the application of the terminal acquires the content from the content server, the application acquires the content tag corresponding to the content and downloads it locally to the terminal. It is understandable that since the amount of data in the content tag itself is very small and is only obtained when the user opens the content, the traffic increased by acquiring the content tag is very limited and will not affect the content server and the entire network.

Optionally, when the terminal updates the first user portrait of the user in the terminal, the calculated user portrait may directly replace the first user portrait originally stored locally in the terminal to complete the update of the first user portrait. If the first user portrait originally stored locally in the terminal is empty, the calculated user portrait is directly stored in the terminal locally, and the update of the first user portrait is completed.

The preset time interval can be a static time interval or a dynamic time interval. Preferably, the preset time interval is a dynamic time interval, and the dynamic time interval is negatively correlated with the transmission speed of the server. That is, the faster the transmission speed of the server, the shorter the dynamic time interval; the slower the transmission speed of the server, the longer the dynamic time interval. The user portraits in the terminal and the server are updated according to the dynamic time interval. For the terminal, when the terminal network environment is poor, the transmission frequency of the differential value of the portrait can be reduced, which is beneficial to reduce the power consumption of the terminal and improve the terminal's performance. Stalling situation; for the server, it can match the network transmission environment and the processing capability of the server, and realize dynamic control of the update frequency of the user portrait in the server, so that the transmission speed on the server is slower and the delay is longer. When it is large, reduce the update frequency of the user portrait in the server to reduce the load of the server, reduce the risk of the server being down due to heavy load, and improve the level of the smooth operation of the system on the server; the transmission speed on the server is faster and the response is fast. When the update frequency of the user portrait in the server is increased, the data of the user portrait can be sent to the server at a faster speed.

In a specific example, the dynamic time interval can be calculated according to the following calculation formula:

Δt=t ₀ −t ₀ *α ^1/R ;

Among them, Δt is the dynamic time interval, t ₀ is the preset maximum time interval, α is a constant and 0<α<1, and R is the transmission speed of the server.

Specifically, t ₀ can be set according to actual needs, and no specific limitation is made here. R can be calculated according to the amount of data k transmitted in a time period and the corresponding transmission delay τ, that is, R=k/τ. It can be understood that the larger R is, the closer Δt is to Δt=t ₀ -t ₀ *α; the smaller R is, the closer Δt is to t ₀ ; in addition, updating the user portraits of the terminal and server according to the dynamic time interval does not affect The user portrait finally obtained by the server will only cause a certain degree of delay in the user portrait in the server when the response of the server is slow. The degree of delay can be controlled by t ₀ in the calculation formula.

The dynamic time interval can be specifically implemented by setting a corresponding timer. Optionally, when the behavior record data in the behavior record table is updated, the calculation of the duration of the dynamic time interval can be started. That is, it is equivalent to setting a trigger switch. When the behavior record data is updated, the duration of the dynamic time interval is calculated, and then the user portrait of the terminal is calculated and updated according to the dynamic time interval, so as to calculate and update the user portrait according to the actual usage of the user. , reduce the occupation of terminal resources.

In a specific example, after calculating and updating the first user portrait of the user in the terminal at preset time intervals according to the behavior record table, the method further includes: deleting the behavior record data used for updating the first user portrait in the behavior record table ; If the behavior record data in the behavior record table is empty, stop the calculation of the duration of the dynamic time interval.

Specifically, after updating the first user portrait, the server deletes the behavior record data participating in the update of the first user portrait in the behavior record table, so as to reduce the occupation of terminal storage resources; determine whether the behavior record data in the behavior record table is Empty, if the action of deleting the behavior record in the behavior record table has been completed, and the behavior record data is empty at this time, the calculation of the duration of the dynamic time interval will be stopped, which is equivalent to turning off the trigger switch that triggers the update of the first user portrait and stopping the first user portrait. The calculation and update of user portraits reduce the occupation of terminal computing resources.

S103: Calculate the difference value of the portrait of the first user portrait, where the difference value of the portrait is a difference value compared with the user portrait at the previous moment.

Specifically, the terminal makes a difference between the currently calculated first user portrait and the user portrait at the previous moment, so as to obtain a portrait difference value of the currently calculated first user portrait. Among them, the example of the difference value of the portrait is as follows in Table 2:

Table 2

Optionally, before updating the first user portrait in the terminal, the terminal may first make a backup of the user portrait at the previous moment, so that after updating the first user portrait in the terminal, the difference between the first user portrait is calculated according to the backup. value. In practical applications, the difference value of the first user portrait obtained by this calculation and the user portrait at the previous moment may also be obtained first, and then the first user portrait in the terminal is updated.

S104: Send the portrait difference value to the server, so that the server can update the second user portrait of the user in the server according to the portrait difference value.

Specifically, the terminal sends the calculated portrait difference value to the server, and after receiving the portrait difference value, the server adds the portrait difference value to the second user portrait originally stored in the server, thereby completing the update of the second user portrait .

Optionally, when updating the second user portrait, the server may traverse the label fields in the server according to the label fields in the first user portrait, and update the difference values of the portraits in the user portrait to the database of the server one by one. The specific process can be as follows: the server fetches the tag ID and tag score in the user portrait from the database, adds the difference value of the portrait in the user portrait and the tag score in the database, and writes it into the database as a new tag score; When there is no label corresponding to the user portrait in the database, the label in the user portrait is directly written into the database, and the difference value of the portrait in the user portrait is written into the database as the label score.

After the terminal has updated the first user portrait, the second user portrait in the server is updated according to the first user portrait, which is beneficial for businesses such as recommendation systems using the user portrait to be able to use the latest user portrait in time.

It should be understood that when updating the second user portrait, since a user portrait is usually composed of hundreds of tag fields and thousands of tag values, and its size is about 1-10KB, if the first user portrait is directly sent to the service At the server, the second user portrait is updated according to the first user portrait. When user behavior occurs frequently, the network traffic transmitted to the server is still relatively large. Since each time the user portrait is recalculated, the new user portrait only has some tags or some tag values changed compared with the original user portrait, and most of the user portrait data remains unchanged. Therefore, when updating, you can use The image difference value is used to update the second user portrait in the server, which reduces the network traffic transmitted to the server and reduces the bandwidth requirements for data transmission between the terminal and the server.

In a specific example, after sending the portrait difference value to the server so that the server can update the second user portrait of the user in the server according to the portrait difference value, the method further includes: obtaining a result of updating the second user portrait by the server , if the result is an update failure, then the portrait differential value is used as the first portrait differential value; The portrait differential value calculated next time is obtained as the second portrait differential value; The first portrait differential value is merged with the second portrait differential value to obtain the first Three portrait differential values; sending the third portrait differential value to the server for the server to update the second user portrait according to the third portrait differential value.

It can be understood that, after obtaining the result that the server fails to update the second user portrait, a retransmission mechanism can be used to retransmit. Optionally, retransmission can also be set after a period of time. However, if the result of updating the second user portrait is a failure, it indicates that the network environment of the server at this time is poor or the processing capability is insufficient, and the result of immediate retransmission will be a failure, and the retransmission will increase after a period of time. The number of times the terminal and the server transmit data. Therefore, updating the second user portrait in the server after merging the portrait difference value of the update failure with the portrait difference value calculated next time can improve the update success rate of the second user portrait and reduce the transmission times of the user portrait data. , reduce the occupation of server resources.

Please refer to FIG. 3 , which is a schematic structural diagram of user portrait updating in the prior art. Specifically, the user generates user behavior through the terminal application, the collection server cluster collects user records of a large number of users through the behavior collection module, and forms a corresponding behavior record table for each user; the behavior record table is sent to the storage cluster for centralized storage, and then uses The user portrait computing cluster calculates and updates the user portrait according to the behavior record table in the storage cluster; the content service cluster then recommends content based on the calculated and updated user portrait. Since a storage cluster is required to store the behavior record tables of a large number of users, a large amount of storage resources are required; and when the user portrait computing cluster is used for the calculation of user portraits, due to the huge number of users, whether it is streaming-based real-time computing, Or periodic batch calculations, which require a lot of computing resources on the server side. Further, since the details of the user's behavior record need to be uploaded to the server, the risk of privacy intrusion or even detailed data leakage will be caused to the user. In addition, if the database of the user portrait is lost, it is necessary to traverse all the behavior record tables to restore the database of the user portrait, and the computational and time costs are huge.

Please refer to FIG. 4 , which is a schematic structural diagram of a method for updating a user portrait provided by an embodiment of the present invention. Specifically, the terminal (APP) obtains the user's behavior record and records it locally, calculates and updates the local user portrait of the terminal according to the recorded behavior record, then calculates the portrait difference value of the user portrait, and sends the portrait difference value to the portrait server ( server), the portrait server updates the user portrait in the portrait server according to the portrait difference value; the content service cluster performs content recommendation and other services according to the user portrait in the portrait server. Since the user's behavior record data is stored locally on the terminal, it does not need to occupy the storage resources of the server; and the user portrait is calculated locally on the terminal, and each user uses its own terminal to calculate the user portrait, so there is no need to deploy a large number of servers on the server. Computing resources are used to calculate user portraits. Further, since there is no need to send the user's behavior record data to the server, there is no risk of leakage of the user's sensitive information; the user portrait in the server is updated through the portrait difference value, so that the final user portrait data cannot be restored. Record user behavior data. In addition, both the terminal and the server save user portraits, and the two are backups of each other. Even if one of them is lost, it can be retrieved through the other. It will not cost a huge amount of calculation due to the loss of the user portrait data in the server. cost.

Compared with the prior art, the user portrait update method provided by the embodiment of the present invention obtains the user's behavior record through the terminal and records it in the behavior record table in the terminal, and can save the user's behavior record data in the terminal, so that the server does not It is necessary to deploy a large number of storage resources for the storage of behavior record data; by calculating and updating user portraits on the terminal, the server does not need to deploy a large number of computing resources for the calculation of user portraits, occupying less resources on the server side; Setting the time interval to update the user portraits in the terminal and the server can reduce the update frequency of the user portraits in the server and further reduce the resource occupation of the server; and, when updating the user portraits in the server, the difference value of the portrait is used. It can be updated in the form of data transmission, which can reduce the bandwidth requirements for data transmission between the terminal and the server.

The second embodiment of the present invention relates to a method for updating a user portrait. The second embodiment is roughly the same as the first embodiment, and the main difference is that: before acquiring the user's behavior record and recording it in the behavior record table in the terminal, it also includes: acquiring the timestamp of the first user portrait as the first The timestamp and the timestamp obtained from the second user portrait are taken as the second timestamp. If the first timestamp is greater than the second timestamp, the first user portrait is sent to the server, so that the server can update the first user portrait according to the first user portrait. Two user portraits; if the first timestamp is less than the second timestamp, obtain the second user portrait from the server, and update the first user portrait according to the second user portrait.

The specific process of the user portrait update method provided by the embodiment of the present invention is shown in FIG. 5 , and specifically includes the following steps:

S201: Acquire the timestamp of the first user portrait as the first timestamp, and obtain the timestamp of the second user portrait as the second timestamp.

S202: Determine whether the first time stamp is greater than the second time stamp, if the first time stamp is greater than the second time stamp, go to S203; if the first time stamp is less than or equal to the second time stamp, go to S204.

S203: Send the first user portrait to the server, so that the server can update the second user portrait according to the first user portrait.

S204: Determine whether the first time stamp is smaller than the second time stamp, if the first time stamp is smaller than the second time stamp, go to S205, and if the first time stamp is equal to the second time stamp, go to S206.

S205: Obtain the second user portrait from the server, and update the first user portrait according to the second user portrait.

S206: Acquire the user's behavior record and record it in the behavior record table in the terminal.

S207: Calculate and update the first user portrait of the user in the terminal at preset time intervals according to the behavior record table.

S208: Calculate the difference value of the portrait of the first user portrait, where the difference value of the portrait is a difference value compared with the user portrait at the previous moment.

S209: Send the portrait difference value to the server, so that the server can update the second user portrait of the user in the server according to the portrait difference value.

Wherein, S206-S209 are the same as S101-S104 in the first embodiment. For details, please refer to the description in the first embodiment. In order to reduce repetition, details are not repeated here.

For S201-S205, specifically, after starting the application, the terminal obtains the timestamp of the first user portrait locally on the terminal as the first timestamp, and obtains the timestamp of the second user portrait on the server as the second timestamp; and then judges Whether the first time stamp is greater than the second time stamp, if the first time stamp is greater than the second time stamp, it indicates that the local first user portrait of the terminal is the latest, then the first user portrait is sent to the server, so that the server can A user portrait updates the second user portrait, and enters S206 after the server updates the second user portrait; if the first time stamp is less than or equal to the second time stamp, further determine whether the first time stamp is less than the second time stamp; If the first timestamp is less than the second timestamp, it indicates that the second user portrait on the server is the latest, and the terminal obtains the second user portrait from the server, updates the first user portrait according to the second user portrait, and after the terminal updates the first user portrait Enter S206 after a user portrait; if the first time stamp is equal to the second time stamp, indicating that the user portraits of the terminal and the server are both up-to-date, go directly to S206.

Optionally, when the second user portrait is updated according to the first user portrait, or the first user portrait is updated according to the second user portrait, the update may be completed by replacing the user portrait. Since the user portrait needs to be transmitted between the terminal and the server, in order to protect the user's information security, the corresponding encryption algorithm can be set before transmission, and the specific encryption algorithm can be set as needed, which is not specifically limited here.

Optionally, the first timestamp may be updated by obtaining a timestamp when the first user portrait is updated. The second time stamp can be updated according to the first time stamp when the second user portrait is updated, so that after the second user portrait in the server is successfully updated, the time stamps of the user portraits of the terminal and the server are consistent, so that according to the time stamps Complete the synchronization of user portraits in the terminal and the server.

Please refer to FIG. 6 , which is a specific flowchart of a method for updating a user portrait provided by an embodiment of the present invention. Specifically, the terminal APP is started, and the dynamic time interval is initialized; when the user uses the APP, when the user's behavior record data is written, the trigger switch is turned on, and the calculation of the dynamic time interval starts; Whether the duration has expired, if the duration of the dynamic time interval is not reached, it will continue to sleep; if the duration of the dynamic time interval has expired, the terminal's local user portrait calculation process will be triggered; after the user portrait calculation process, the portrait difference value will be calculated and transmitted. Go to the server (image server), calculate the dynamic time interval again, and update the dynamic time interval. After calculating the user portrait, update the timestamp of the local portrait, delete the behavior record data in the local behavior record table, and determine whether the behavior record data is empty. If it is empty, the trigger switch will be turned off.

Compared with the prior art, the user portrait update method provided by the embodiment of the present invention obtains the first time stamp of the first user portrait and obtains the first time stamp of the first user portrait before obtaining the user's behavior record and recording it in the behavior record table in the terminal. The second timestamps of the two user portraits are compared, and when the first timestamp is greater than the second timestamp, the second user portrait is updated according to the first user portrait; when the first timestamp is less than the second timestamp, the second user portrait is updated according to the The update of the first user portrait by the portrait can realize the synchronization of the user portrait in the terminal and the server, which is conducive to the subsequent calculation and update of the user portrait by using the portrait difference value, and ensures the accuracy of the user portrait calculation; at the same time, through the terminal and the server. The synchronization of user portraits can make it convenient for users to use the same application program on multiple terminals, and can also restore user portraits by using another one as a backup after the user portrait in the terminal or server is lost.

The step division of the above various methods is only for the purpose of describing clearly. During implementation, it can be combined into one step or some steps can be split and decomposed into multiple steps, as long as they contain the same logical relationship, they are all within the protection scope of this patent. ;Adding insignificant modifications to the algorithm or process or introducing insignificant designs, but not changing the core design of the algorithm and process are all within the scope of protection of this patent.

The third embodiment of the present invention relates to a user portrait updating system 300 , as shown in FIG. 7 , including: a terminal 301 and a server 302 .

The terminal 301 is used to obtain the user's behavior record and record it in the behavior record table in the terminal 301, calculate and update the first user portrait of the user in the terminal 301 at preset time intervals according to the behavior record table, and calculate the value of the first user portrait. Portrait difference value, sending the portrait difference value to the server 302, wherein the portrait difference value is a difference value compared to the user portrait at the previous moment;

The server 302 is configured to update the second user portrait of the user in the server 302 according to the portrait difference value.

Further, the terminal 301 is further configured to: obtain the timestamp of the first user portrait as the first timestamp, and obtain the timestamp of the second user portrait as the second timestamp; if the first timestamp is greater than the second timestamp, then The first user portrait is sent to the server 302; if the first timestamp is less than the second timestamp, the second user portrait is obtained from the server 302, and the first user portrait is updated according to the second user portrait; The first timestamp is greater than the second timestamp, and when the first user portrait is received, the second user portrait is updated according to the first user portrait.

Further, the preset time interval is a dynamic time interval, and the dynamic time interval is negatively correlated with the transmission speed of the server 302 .

Further, the dynamic time interval is calculated according to the following calculation formula:

Δt=t ₀ −t ₀ *α ^1/R ;

Among them, Δt is the dynamic time interval, t ₀ is the preset maximum time interval, α is a constant and 0<α<1, and R is the transmission speed of the server 302 .

Further, the terminal 301 is further configured to start the calculation of the duration of the dynamic time interval when the behavior record data in the behavior record table is updated.

Further, the terminal 301 is further configured to: delete the behavior record data used for updating the first user portrait in the behavior record table; if the behavior record data in the behavior record table is empty, stop the calculation of the duration of the dynamic time interval.

Further, the terminal 301 is also used to: obtain the result of updating the second user portrait by the server 302, and if the result is that the update fails, then use the portrait difference value as the first portrait difference value; obtain the portrait difference value calculated next time as the second portrait difference value. Portrait difference value; combine the first portrait difference value with the second portrait difference value to obtain a third portrait difference value; send the third portrait difference value to the server 302; the server 302 is also used to update according to the third portrait difference value The second user portrait.

It is not difficult to find that this embodiment is a system example corresponding to the first embodiment and the second embodiment, and this embodiment can be implemented in cooperation with the first embodiment and the second embodiment. The related technical details mentioned in the first embodiment and the second embodiment are still valid in this embodiment, and are not repeated here in order to reduce repetition. Correspondingly, the related technical details mentioned in this embodiment can also be applied to the first embodiment.

It is worth mentioning that each module involved in this embodiment is a logical module. In practical applications, a logical unit may be a physical unit, a part of a physical unit, or multiple physical units. A composite implementation of the unit. In addition, in order to highlight the innovative part of the present invention, this embodiment does not introduce units that are not closely related to solving the technical problem proposed by the present invention, but this does not mean that there are no other units in this embodiment.

The fourth embodiment of the present invention relates to a network device. As shown in FIG. 8 , it includes at least one processor 401; The instructions are executed by the processor 401, and the instructions are executed by the at least one processor 401, so that the at least one processor 401 can execute the above-mentioned user portrait updating method.

The memory 402 and the processor 401 are connected by a bus, and the bus may include any number of interconnected buses and bridges, and the bus connects one or more processors 401 and various circuits of the memory 402 together. The bus may also connect together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides the interface between the bus and the transceiver. A transceiver may be a single element or multiple elements, such as multiple receivers and transmitters, providing a means for communicating with various other devices over a transmission medium. The data processed by the processor 401 is transmitted on the wireless medium through the antenna, and further, the antenna also receives the data and transmits the data to the processor 401 .

Processor 401 is responsible for managing the bus and general processing, and may also provide various functions including timing, peripheral interface, voltage regulation, power management, and other control functions. The memory 402 may be used to store data used by the processor 401 when performing operations.

A fifth embodiment of the present invention relates to a computer-readable storage medium storing a computer program. The above method embodiments are implemented when the computer program is executed by the processor.

That is, those skilled in the art can understand that all or part of the steps in the method of the above-mentioned embodiments can be completed by instructing the relevant hardware through a program, and the program is stored in a storage medium and includes several instructions to make a device (which can be It is a single chip microcomputer, a chip, etc.) or a processor (processor) that executes all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, removable hard disk, Read-Only Memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes.

Those skilled in the art can understand that the above-mentioned embodiments are specific examples for realizing the present invention, and in practical applications, various changes in form and details can be made without departing from the spirit and the spirit of the present invention. scope.

Claims (10)

1. a user portrait update method, is characterized in that, is applied to terminal, comprises: Obtain the user's behavior record and record it in the behavior record table in the terminal; Calculate and update the first user portrait of the user in the terminal at preset time intervals according to the behavior record table; Calculate the portrait difference value of the first user portrait, wherein the portrait difference value is compared to the difference value of the user portrait at the previous moment; Sending the portrait difference value to the server, so that the server can update the second user portrait of the user in the server according to the portrait difference value. 2. The method for updating user portraits according to claim 1, wherein, before the acquisition of the user's behavior record and recording in the behavior record table in the terminal, further comprising: Obtain the timestamp of the first user portrait as the first timestamp, and obtain the timestamp of the second user portrait as the second timestamp; If the first timestamp is greater than the second timestamp, send the first user portrait to the server, so that the server can update the second user portrait according to the first user portrait ; If the first timestamp is less than the second timestamp, the second user portrait is obtained from the server, and the first user portrait is updated according to the second user portrait. 3 . The user portrait updating method according to claim 1 , wherein the preset time interval is a dynamic time interval, and the dynamic time interval is negatively correlated with the transmission speed of the server. 4 . 4. user portrait update method according to claim 3, is characterized in that, also comprises: The dynamic time interval is calculated according to the following calculation formula: Δt=t ₀ −t ₀ *α ^1/R ; Wherein, Δt is the dynamic time interval, t ₀ is a preset maximum time interval, α is a constant and 0<α<1, and R is the transmission speed of the server. 5. user portrait update method according to claim 3, is characterized in that, also comprises: When the behavior record data in the behavior record table is updated, the calculation of the duration of the dynamic time interval is started. 6. The user portrait updating method according to claim 5, characterized in that, after calculating and updating the first user portrait of the user in the terminal at preset time intervals according to the behavior record table, further comprising: Delete the behavior record data used to update the first user portrait in the behavior record table; If the behavior record data in the behavior record table is empty, the calculation of the duration of the dynamic time interval is stopped. 7. user portrait update method according to claim 1, is characterized in that, in described sending described portrait difference value to server, in order for described server to update described server according to described portrait difference value. After the second user portrait of the user, it also includes: Obtain the result of updating the second user portrait by the server, and if the result is that the update fails, use the portrait difference value as the first portrait difference value; Obtain the image difference value calculated next time as the second image difference value; The first portrait differential value is combined with the second portrait differential value to obtain the third portrait differential value; Sending the third portrait difference value to the server, so that the server can update the second user portrait according to the third portrait difference value. 8. A user portrait updating system, comprising a terminal and a server; The terminal is used to obtain the user's behavior record and record it in the behavior record table in the terminal, calculate and update the first user portrait of the user in the terminal according to the behavior record table at preset time intervals, Calculate the portrait difference value of the first user portrait, and send the portrait difference value to the server, wherein the portrait difference value is compared with the difference value of the user portrait at the previous moment; The server is configured to update the second user portrait of the user in the server according to the portrait difference value. 9. A network device, comprising: at least one processor; and, a memory communicatively coupled to the at least one processor; wherein, The memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform the execution of any of claims 1 to 7 User portrait update method described above. 10 . A computer-readable storage medium storing a computer program, wherein when the computer program is executed by a processor, the user portrait updating method according to any one of claims 1 to 7 is implemented. 11 .

Images