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RESEARCH-IN-PROGRESS
DATA NEVER SLEEP: A MARKETING PERSPECTIVE
Ezgi Akar
Bogazici University, Management Information Systems
Istanbul, Turkey
ezgi.akar@boun.edu.tr
Serkan Akar
Managing Director of Inci Sozluk
Istanbul, Turkey
serkan.akar@incisozluk.com.tr
Abstract
Millions of people share photos, texts, videos, and other types of contents on various social
networking sites in their daily lives. It indicates that there is an enormous amount of data
generated by those people on the Internet and this data generation continues to grow fast.
Businesses collect any data such as consumer preferences, purchases, or trends on the Internet
to keep their strategies up-to-date, to take strategic precautions, and to satisfy their consumers.
In this sense, this study aims to analyze trending topic data gathered from Twitter that is one of
the most popular and publicly available social media data sources. In Twitter, more than 500
million tweets are shared per day, and some of them become trending ones. These trending
topics have the power to keep people aware and entertained. This capability also provides emarketers with a useful tool to get in front of a big and potential audience. In parallel, this study
investigates 100 trending topics involving 301.492 tweets and 92.745 unique users, and it
clusters these topics considering user-related factors. Thus, this research shows a way for emarketers how to make a trending topic and to reach new audiences through social networking
platforms.
Keywords: clustering, social media, trend topic, Twitter, e-marketing
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INTRODUCTION
A new popular term called as big data has shown up, and people and academics in information
technologies have become more interested in it. Big data is defined as “datasets whose size is
beyond the ability of typical database software tools to capture, store, manage, and analyze”
(Manyika et al., 2011). This definition highlights that big data does not only mean gigabytes or
terabytes of large data, but it also refers to datasets that cannot be collected, saved, and analyzed
by traditional database systems (Purcell, 2013).
Today, data are not only generated from traditional ways but also from the Internet,
social networking sites, multimedia contents, digital images, GPS signals, etc. For example; in
2013, 4.4 zettabytes of data were generated in the world, and by 2020 there will be 44 of
zettabytes data (Northeastern University, 2016). Additionally, Google processes 3.5 billion
requests per day and stores 10 exabytes data (Deep Web Tech, 2016). Amazon hosts about 1.4
million servers to handle with daily requests. Facebook collects 500 terabytes of daily data
including contents, likes, and photos. Moreover, 90% of the data are created within last two
years (Gobble, 2013). These statistics indicate that data never sleep.
In parallel to these statistics, the analysis of these data has become beneficial and even
crucial for various industries to maintain their status quo and catch up this new this era. 95% of
the US businesses state that they prefer to use data to power their business opportunities and
84% of the US businesses say that data have become the part of their business strategies (The
Global Data Management Benchmark Report, 2017). Furthermore, investigating lots of data
allows businesses to understand consumers’ needs and their purchasing habits.
Twitter is one of valuable data sources in where a considerable amount of data is
generated. Twitter provides people and academics with application program interface (API)
that makes data collection is easy and less effortless for every Internet user (Burgess and Bruns,
2012). Twitter that was released in 2006 is a very popular microblogging platform around the
world. It has already become a natural platform where information disseminates severely
(Ribarsky et al., 2014). Users send more than 500 million tweets per day (Omnicore, 2017).
Tweets are known as text messages including 140 characters. In tweets, words or phrases
whether including “# (hashtag)” or not can be a trending topic. For example; both #madonna
and “I love Madonna” can be trending topics. These topics can be determined as emerging
events, breaking news, and general topics (Ahangama, 2014), and they become visible to all
users. In this respect, this study focuses on trending topics on Twitter and tries to find answers
to the following questions:
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•
•
how a hashtag becomes a trending topic naturally,
•
what factors affect topics to be a trending one,
•
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how Twitter users create a trending topic,
how e-marketers can benefit from trending topics.
Within the scope of the study, 100 trending topics have been collected over a three-week period.
For each trending topic, tweets that included related trending topic were gathered. After that,
users who tweeted were obtained, and their total number of tweets, followers, and followings
were collected. As a result, 301.492 tweets and 92.745 unique user information have been
collected. After that, these trending topics are clustered by taking all related and collected data
into considerations.
This paper is divided into four sections. The related works are explained in the first
section. In the second section, the methodology of the study is included. In the third part, the
study results are presented. In the last section, the study highlights and implications are
discussed.
RELATED WORK
Trending topics have been analyzed in many academic studies for various purposes. In their
study, Naaman et al. (2011) characterize the emerging trends on Twitter. They study on two
datasets including 8.500 trends and 48.000.000 tweet messages. They focus on the trend
detection by using term frequency-inverse document frequency (TF-IDF) weighting as a
methodology. In the study of streaming trend detection in Twitter, Benhardus and Kalita (2013)
also use this same methodology for the trend detection. They define TF-IDF weighting as “an
information retrieval technique that weights a document’s relevance to a query based on a
composite of the query’s term frequency and inverse document frequency.”
Additionally, Lee et al. (2011) use TF-IDF weighting technique as a part of their study.
They try to classify trending topics based on 18 categories in the study. Firstly, they create 18
categories and then apply two approaches for the topic classification: a bag of words for text
classification and network-based classification. In the text-based classification method, they
use TF-IDF weighting technique. In network-based classification method, they identify five
associated topics for a given topic based on the number of common users. They randomly select
768 trending topics and apply these techniques and compare the accuracy results.
Moreover, Gao et al. (2013) study on the summarization of the Twitter trending topics.
They do analyses by using both streams based and semantic-based approaches to detect
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important subtopics within a trending topic, and then they propose a sequential summarization.
Gao et al. (2013) focus on Latent Dirichlet Allocation (LDA) statistical model and Kurniati et
al. (2014) also concentrate on the same statistical model. They compare the effectiveness of
LDA and semantic-based Joint Multi-Grain Topic-Sentiment topic modeling techniques in their
study. They collect 8.6 million tweets and apply these techniques to detect trend topics from
Twitter stream data. Besides, Lau et al. (2012) introduce a novel topic modeling-based
methodology to follow emerging events on Twitter based on LDA statistical model.
Furthermore, Yang and Rim (2014) expand LDA as TS-LDA which stands for trend-sensitive.
This model extracts latent topics from contents.
Wilkinson and Thelwall (2012) make an international comparison. They collect tweets
from 6 countries including 0.5 billion tweets based on the top 50 trending keywords. They
compare the trending topics based on each country. Lastly, Ma et al. (2013) focus on the
predicting the popularity on newly emerging hashtags in Twitter. In their study, they compare
five classification models among which the logistic regression model performs the best. Aiello
et al. (2013) also compare six topic detection methods by using Twitter stream data.
In addition to this research, Ahangama (2014) presents a new method in his study. This
new method finds the trending topics of different social media networks using real-time data
that are published on Twitter. Song and Kim (2013) also develop such a system. They call it as
“real-time Twitter trend mining system” to process a huge volume of data available on Twitter.
Moreover, Han et al. (2014) study trend topics from a distinct perspective. They try to
disambiguate the meanings of the topics in the trending list. They compare and apply key factor
extraction, named entity recognition, topic modeling, and automatic summarization methods to
extract the contents of trending topics. Giummolè et al. (2013) compare Twitter trends and
Google hot queries. They test the relation between comparable Twitter and Google trends by
testing three classes of time series regression models.
Furthermore, Ostrowski (2012) makes semantic social network analysis for trend
identification. In other words, the methodology focuses on the utilization of semantics and
identifies the influence and power of key players in relevant social networks. Zublaga et al.
(2015) also classify the trends based on types of triggers such as news, ongoing events, memes,
and commemoratives. Lastly, Stafford and Yu (2013) analyze Twitter trend topics and the
effects of spam on Twitter’s trending topics.
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METHODOLOGY
This section explains how the related data are collected, preprocessed for further analyses, and
analyzed.
Data Collection
Data collection includes three steps. In the first step, “GET trends/place” standard Twitter API
is used to collect trending topics in Turkey. This API is executed in every 60 seconds iteratively
due to API execution limit for a developer. 100 unique trend topics and their creation time are
collected between 24th May 2014 and 13th June 2014. Table 1 shows the data structure of the
collected trending topics.
Table 1. Data Structure of Trend Table
Data
trend id
name
trend creation time
Description
unique number for each trending topic.
word/phrase/hashtag that becomes a trending topic.
the time when the topic becomes a trending topic.
At the second step, shared tweets for each trending topic are collected by “GET search/tweets”
Twitter API. As a result, 301.492 tweets are accumulated. Table 2 shows the data structure of
the collected tweets. The text form of the tweet, its creation time, retweet count, and user
information are gathered.
Table 2. Data Structure of Twitter Table
Data
Description
tweet id
tweet
tweet creation time
retweet count
user id
trend id
unique number for each tweet.
text form of the tweet.
the time when the tweet is sent.
the count how many times a tweet is retweeted by other users.
identification number of the user who sends the tweet.
identification number of the related trending topic.
In the third step, data about users who shared those tweets are collected by “GET search/tweets”
Twitter API. As a result, data for 92.745 unique users are accumulated. Table 3 includes the
data structure of user-related information. Users’ Twitter usernames, account creation time, and
the number of tweets, followers, followings, and favorites are collected.
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Table 3. Data structure of user table
Data
user id
username
user creation time
user favorite count
user followers count
user tweet count
user friend count
query
Description
unique number for each user.
Twitter username of the user.
the time when the user account is created.
the number of tweets favorited by the user.
the number of users following that user.
the number of tweets that the user shared.
the number of users that the user follows.
query of the trending topic to define specific users who sent tweets for the
given trending topic.
Data Preprocessing
Data are preprocessed before performing any analysis on them. Identification of the time of
when the word/phrase/hashtag is created and the time of when it becomes a trending topic is
essential. The time of when it becomes a trending topic is collected as “trend creation time” as
in Table 1. The time when it is created for the first time is taken as the creation time of the first
tweet including that topic. In this sense, a new variable called as “trend time” is derived by
calculating these two variables. “Trend time” includes the elapsed time from the creation of the
topic to the time when it becomes a trending one. For example; #deprem (#earthquake in
English) is one of the trending topics. The first tweet including this hashtag is created on 24th
May 2014 at 12:26 and it has become a trending topic on 24th May 2014 at 12:31. “Trend time”
shows that #deprem has become a trending topic in 5 minutes.
After that, “tweet count” and “retweet count” variables are calculated. All the tweets for
the given trending topic are gathered together. The critical point is that tweets including “RT”
(Retweet) in their texts are excluded because they are used for the calculation of “retweet
count.” Then, tweets posted until “trend time” are counted as “tweet count,” and retweets are
counted as “retweet count.” For example; there are 459 tweets and 395 retweets including the
hashtag #deprem between 12:26 and 12:31 before the hashtag becomes a trending topic (see
Figure 1).
The next step includes the calculations of the average of users’ total tweets, followers,
and followings for each trending topic. For example; 489 unique users have written tweets
including the hashtag, #deprem, up to 12:31 before it becomes a trending topic. It is essential
to collect unique users because a user can send more than one tweet including the same trending
topic. These 489 individuals follow 578 users and are followed by 3098 users on average, and
send 5223 tweets in total. Table 4 shows the final data structure being analyzed.
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Figure 1. Total tweets and retweets for #deprem before it becomes trend topic
Table 4. Data Structure of The Final Table
Data
Description
hashtag id
hashtag name
Date
Time
trend time
tweet count
retweet count
average user total tweets
average user followings
average user followers
unique number for each trending topic.
word/phrase/hashtag that becomes a trending topic.
the date when the trending topic is collected.
the time when the topic becomes a trending topic.
how much it takes for the topic to become a trending topic.
the number of tweets sent by users before the topic becomes a trending topic.
the number of retweets sent by users before the topic becomes a trending topic.
the average number of total tweets shared by users for the trending topic.
the average number of total followings of the users tweeted about the trending topic.
the average number of followers of the users tweeted about the trending topic.
Data Analysis
To analyze the final data, SPSS 22 is used. Trending topics are clustered by taking the factors
of trend time, tweet count, retweet count, average user total tweets, average user followings,
and average user followers as shown in Table 4 into consideration. Before the analysis, all
variables are standardized to ensure that all of them contribute equally to the similarity between
the observations.
Clustering is known as an interdependence technique that variables cannot be classified
as independent or dependent variables (Hair et al., 2010). In other words, Hair et al. (2010) state
that all variables are examined simultaneously to find an underlying structure to the complete
set of variables which is also parallel with the aim of this study. Wald’s cluster method is
applied to determine the number of clusters. According to Sharma (1996), Ward’s method
creates clusters by maximizing within clusters homogeneity. It computes the sum of squared
distances within clusters and aggregates clusters with the minimum increase in the overall sum
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of squares. In other words, this method does not compute distances between clusters and it tries
to minimize sums of squares within clusters.
After the determination of the number of clusters, the k-means clustering algorithm that
“partitions the observations into a user-specified number of clusters and then iteratively
reassigning observations until some numeric goal related to cluster distinctiveness is met” is
applied (Hair et al., 2010).
RESULTS
At the first stage, hierarchical clustering analysis is conducted by using agglomerative
clustering technique as seen in Figure 2.
Figure 2. Scree diagram of agglomeration distances
According to Figure 2, it is evident that stage 97 indicates the optimal stopping point for
merging clusters, so it is concluded that three clusters are the optimal solution for the given
dataset. After this stage, a k-means clustering algorithm is run to obtain three clusters. Table 5
shows the distribution of the observations for each cluster. There are 63, 24, and 13 trending
topics in clusters one, two, and three respectively.
Table 5. K-Means Cluster Distribution
Cluster
1
2
3
Total
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Number of Cases
63
24
13
100
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Table 6 provides ANOVA results for the cluster centers. It is evident that trend time, total
tweets, total retweets, average user total tweets, average user total followers, and average user
total followings are significant. It indicates that means of all clustering variables differ
significantly from each other. Moreover, when F values are considered, it is revealed that
average user total followers, average user total followings, and total retweets have the greater
F values, respectively. It shows that these variables have the significant influence in the
formation of the clusters, whereas trend time with 5.949 F value has the least significant effect.
Table 6. K-Means ANOVA Results
ANOVA
Cluster
Mean
df
Square
Trend time
Total tweets
Total retweets
Average User Total Tweets
Average User Total
Followers
Average User Total
Followings
Error
Mean
df
Squar
e
.909
97
.649
97
.566
97
.705
97
F
Sig.
5.949
27.820
38.918
21.684
.004
.000
.000
.000
5.408
18.044
22.037
15.294
2
2
2
2
26.416
2
.476
97
55.503
.000
23.371
2
.539
97
43.382
.000
Table 7 compares the variables for each cluster. According to Table 7, while topics in the first
cluster become trending topics in about 31 minutes, they become trending topics in almost 36
minutes and nearly 54 minutes in the second and third clusters, respectively. One of the
outstanding results is that users have more followers and followings in the first and second
clusters concerning the third cluster. As it is expected, it indicates that users that have more
followers and followings have the power to make a topic as a trending one in between about
31-36 minutes. On the contrary, it takes more time to make a topic as a trending one for users
having fewer followers and followings in the third cluster than users having more followers and
followings in the first and second clusters.
Furthermore, when three clusters are considered, it is evident that retweeting is more
critical than tweeting. It requires more retweets than tweets to be a trending topic for a
word/phrase/hashtag in each cluster. Also, considering the average trend time, users that post
more tweets or users who are one of the most active Twitter users have more influence to make
a topic as a trending one in a short time. Table 7 also indicates that words/phrases/hashtags that
become trending topics in a shorter time require fewer tweets than words/phrases/hashtags that
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become trend topics in a longer time. The main reason can be that these topics may be diffused
more naturally among users. The trending topic algorithm of Twitter may more pay attention
to the natural and real contents than the contents that include spam/ad and are shared by bot
accounts.
Table 7. Cluster Analysis Results
Cluster
1
2
3
Average
Trend Time
31.44
36.31
53.60
Average
Total
Tweets
689.47
560.86
2427.00
Average
Total
Retweets
1171.22
1686.31
5985.20
Average
User
Total Tweets
166286.44
180312.86
27430.25
Average
User Total
Followers
76319.71
85824.02
13237.74
Average
User Total
Followings
49332.58
58670.43
12022.79
CONCLUSION
This study analyzes and considers the factors having a role in the creation of trending topics on
Twitter. For this purpose, unstructured data from Twitter including 100 trending topics, 301,492
tweets, and 92,745 unique users have been collected over a three-week period and converted
into a processable format.
Three clusters are obtained by using Ward’s method. After that, cluster analysis is
performed by using k-means clustering algorithm. Results indicate that the number of retweets
and the number of users’ average total followers and their total followings have significant
effects on the formation of the clusters. In other words, retweets, the number of followers and
followings are vital variables to classify trending topics.
Also, three clusters are compared by considering all related variables. Results reveal
that users having more followers and followings have the greatest influence to make the topics
as trending ones in a shorter time. For example; when the profiles of the first 20 users who
shared tweets including the hashtag #deprem, are examined, they have 332.65 followers,
2,872.95 tweets, and 429.75 followings on average. Besides, as it expected, users having fewer
followers and followings on average render a hashtag as a trending topic in a longer time. This
result indicates that network of Twitter users plays a significant role to make topics as trending
ones.
Retweeting also plays a significant role when the three clusters are compared with each
other. It is unexpected that a topic is rendered as a trending topic by more retweeting about the
topic than more tweeting about it. It implies that when users begin to retweet the tweets
containing the topic, this chain creates an effect on Twitter. In this sense, it can be summarized
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that to create a trending topic, a robust social network including more followers and followings,
and an organic retweet chain is one of the most critical influential points.
From e-marketers’ point of view, they should understand and talk to their consumers
in digital platforms such as in Twitter (Linton, 2015). They can offer products and services to
their consumers, they can diffuse any product, service, and brand information, and even they
can enhance their images on the minds of their consumers, and so they can take advantage of
these digital mediums (Chaffey et al., 2006; Sheth and Sharma, 2005; Hutchings, 2012). For
example; 70% of consumers use social networking sites to get a product and brand information
and to consider other people's recommendations (Kirtiş and Karahan, 2011). In this sense, emarketers can benefit from trending topics for their brands. Trending topics give insight about
what people more care about their lives, the world, politics, marketing, etc. E-marketers can get
clues about things such as seasonal trends, purchasing behaviors, or characteristics of users.
Additionally, e-marketers can get their brands noticed by creating trending topics and reach lots
of their existing and potential consumers. They should pay attention to that contents should be
shared organically and retweeted as much as possible by the most active Twitter users. In such
a way, they can also start new marketing trends and become highly ranked in front of the eyes
of their audiences.
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