Ontologies

The data warehouse design task needs to consider both the end-user requirements and the organization data sources. For this reason, the data warehouse design has been traditionally considered a reengineering process, guided by requirements, from the data sources.Most current design methods available demand highly-expressive end-user requirements as input, in order to carry out the exploration and analysis of the data

Implementing information management system is still a challenging task for any organization. A lot of surveys are conducted to find out the root causes of implementation problems and propose new methods that can improve and simplify this process. In this paper we suggest using an ontology-based decision support system to avoid some implementation challenges.

Information retrieval technology has been central to the success of the Web. For semantic web documents or annotations to have an impact, they will have to be compatible with Web based indexing and retrieval technology. We discuss some of the underlying problems and issues central to extending information retrieval systems to handle annotations in semantic web languages. We also describe three prototype systems that we have implemented to explore these ideas.

Within the scope of ANSWER, an EC-supported research project, a new artistic notation system, called DirectorNotation, is being developed for describing media content, much like notes are used to document a music composition. Our current research focuses on developing “notation-enabled ” offline authoring tools, but interactive applications are an anticipated extension. Here, we summarise the key aspects of DirectorNotation and the ANSWER project, from the point of view of a multimedia-technology audience interested in content-based manipulation of media. Categories and Subject Descriptors

This paper presents an ontology architecture concept for the European Space Agency‘s (ESA) Space Situational Awareness (SSA) Program. It incorporates the author‘s domain ontology, The Space Situational Awareness Ontology and related ontology work. I summarize computational ontology, discuss the segments of ESA SSA, and introduce an option for a modular ontology framework reflecting the divisions of the SSA program. Among other things, ontologies are used for data sharing and integration. By applying ontology to ESA data, the ESA may better achieve its integration and innovation goals, while simultaneously improving the state of peaceful SSA.

Data warehouses (DW) play a decisive role in providing analytical information for decision making. Multidimensional modeling is a special approach to modeling data, considered the foundation for building data warehouses. With the explosive growth in the amount of heterogeneous data (most of which external to the organization) in the latest years, the DW has been impacted by the need to interoperate and deal with the complexity of this new type of information, such as big data, data lakes and cognitive computing platforms, becoming evident the need to improve the semantic expressiveness of the DW. Research has shown that ontological theories can play a fundamental role in improving the quality of conceptual models, reinforcing their potential to support semantic interoperability in its various manifestations. In this paper we propose the application of ontological patterns, grounded in the Unified Foundational Ontology (UFO), for conceptual modeling in multidimen-sional models, in or...

— It is no surprise that the notion of situation is key to situation awareness. The development of the discipline can thus benefit from careful analysis of the notion. In this paper, we approach this by proposing an ontology of situations and scenes. The main contribution of this ontology is that it accounts for how situations progress in time changing qualitatively, constituting what we call scenes. The ontology is built by reusing basic elements from the Unified Foundational Ontology (UFO). It addresses objects, occurrences, and their formal relations to situations and scenes. We use the theory of embodiment proposed by the philosopher Kit Fine to explicate how scenes and situations form wholes constituted of parts.

While the recent advances in Data Science and Machine Learning attract lots of attention in Cyber Security because of their promise for effective security analytics, Vulnerability Analysis, Risk Assessment and Security Policy Validation remain slightly aside. This is mainly due to the relatively slow progress in the theoretical formulation and the technological foundation of the cyber security concepts such as logical vulnerability, threats and risks. In this article we are proposing a framework for logical analysis, threat intelligence and validation of security policies in cyber systems. It is based on multi-level model, consisting of ontology of situations and actions under security threats, security policies governing the security-related activities, and graph of the transactions. The framework is validated using a set of scenarios describing the most common security threats in digital banking and a prototype of an event-driven engine for navigation through the intelligence grap...

Contemporary debates around the ontological turn have pitted efforts to take indigenous ontologies seriously against demands to make visible the forms of dispossession and environmental suffering that characterize the (post)colonial and capitalist present. Meanwhile, a growing array of governmental projects seeks to identify and protect indigenous ontologies in the face of capitalist development processes, including through forms of collective tenure. How can we make sense of such initiatives, and what kind of territories do they encounter and produce? This paper engages this question ethnographically through an examination of everyday life in a legally recognized Native Community Land in the Bolivian Chaco. Drawing on Bolivian Aymara scholar Silvia Rivera Cusicanqui's notion of ch'ixi, I argue that indigenous territories are neither ontologically separate from, nor entirely subsumed by, capitalist development processes. Rather, they are subject to multiple land values, ontologies, and investments. A contested indigenous land titling process, capitalist labor relations, hydrocarbon compensation money, and efforts to maintain relations with spirit beings are all interwoven in the fabric of Guaraní everyday life. Such ch'ixi landscapes emerge at the confluence of capitalist efforts at rendering territories investable, governmental efforts at managing dispossession, and Guaraní efforts to maintain life and exercise territorial sovereignty amidst contradictory processes of (post)colonial governmentality.

Recommender systems are software frameworks that employ a specific type of information filtering technique, aiming at recommending information items or social elements that are likely to be of interest to the user. Herein, we present the evaluation results of the recently prototyped tourism recommender system (TRS). We followed a formal evaluation process to validate the usability of two versions of the TRS by users in realistic environments; the first is a typical web recommender system (wTRS), while the second is a system that enables ...

The ontology is a common place where we can get the shared knowledge about the common concepts. In medical domains, university data bases and in the study of botanical areas of research we can see the applications of ontologies. The main objective of our research is to propose a job recommendation system based on the ontology. The process here is construction of the ontology from various job portals and notifying the result set to both job seekers and employers. The important attempt that here we are describing is to adapt the dynamism to the ontology with the idea of Slowly Changing Source detection based on lookup and update strategy. Look up will identify the change happens or not, whereas the update strategy tracks the change in terms of updating, deletion or insertion of the source. The benefit of our work is dynamic data management provision to the ontology constructed. We believe that our method will give the best results in case of accuracy and time parameters in the job notifications.

Obtaining an implementation of a data warehouse is a complex task that forces designers to acquire wide knowledge of the domain, thus requiring a high level of expertise and becoming it a prone-to-fail task. Based on our experience, we have detected a set of situations we have faced up with in real-world projects in which we believe that the use of ontologies will improve several aspects of the design of data warehouses. The aim of this article is to describe several shortcomings of current data warehouse design approaches and discuss the benefit of using ontologies to overcome them. This work is a starting point for discussing the convenience of using ontologies in data warehouse design.

RÉSUMÉ. Récemment et avec le nombre croissant de jeux de données du linked open data, des recherches nombreuses sont menées dans ce domaine, en particulier celles liées au problème de l'hétérogénéité des ontologies et au liage des données. La plupart des approches et des systèmes déjà développés reposent sur un processus d'alignement basé sur le calcul des mesures de similarité. Ces méthodes ne prennent pas en considération toutes les propriétés (attributs) des données, seulement un ensemble comme par exemple les attributs considérés comme des clés. Malheureusement, ceci peut conduire à des inconsistances pour le web des données et peut violer la sémantique du owl:sameAs qui permet d'indiquer que deux objets sont identiques et en terme d'inférences, que leurs propriétés sont substituables. Dans cet article, nous nous intéressons aux données décrites par des vocabulaires hétérogènes qui proviennent d'une conceptualisation différente des ontologies et donc nous sommes confrontées à l'aspect incomplet de l'information. La comparaison des données se fait à travers toutes leurs propriétés même si elles n'ont pas forcément la même structure. De là, nous proposons d'explorer la théorie des ensembles approximatifs pour l'utiliser dans l'alignement des instances dans le web des données. Mots clé : web des données, liage des données, données manquantes, alignement des instances, owl:sameAs, théorie des ensembles approximatifs.

This article aims to provide the reader with a comprehensive background for understanding current knowledge and research works on ontologies for software project management (SPM). It constitutes a systematic literature review behind key objectives of the potential adoption of ontologies in PM. Ontology development and engineering could facilitate substantially the software development process and improve knowledge management, software and artifacts reusability, internal consistency within project management processes of various phases of software life cycle. The authors examined the literature focusing on software project management ontologies and analyzed the findings of these published papers and categorized them accordingly. They used qualitative methods to evaluate and interpret findings of the collected studies. The literature review, among others, has highlighted lack of standardization in …

This essay examines climatic and ontological change within the Anthropocene among the Makushi in Guyana. During fieldwork in the Makushi village of Surama, the author was frequently told how the wet and dry seasons have become irregular, the temperature has increased, and ecological changes have occurred in the forests and savannas. These perceived changes impact Makushi subsistence practices and have emerged concurrent with the local development of eco-tourism and increased interactions with outside entities in Surama. The author examines local ontological shifts related to these expanded interactions with outsiders, who advocate concepts of ‘climate change’, ‘sustainability’, and ‘conservation’. Recent encounters with climate change and outside entities in Guyana provide an ethnographic case of the broader climatic and related changes occurring in Amazonia. This case is analysed herein through an ontological approach. Based on fieldwork data, the author examines how local transformations are situated within the greater dimensions of the Anthropocene.