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Semantic web
Dědek, J. ; Eckhardt, Alan ; Galamboš, L. ; Vojtáš, Peter
The paper is an overview of possibilities of sematic web, its potential, problems and possible solutions. It cover some aspects - how to obtain structured data, how to quickly process web pages and how to design a simple agent that will make use of such possibilities of semantic web.
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User Preferences for Searching in Web Sources
Eckhardt, Alan ; Vojtáš, Peter
Main topic of this paper are user preferences in sematic web environment. We describe a model for querying with user preferences upon RDF data and for ordering of the answer by user aggregation function. Our model has a theoretical base in modification of fuzzy description logic, which is embedable into two-value description logic and extends OWL. We desceribes also experiments, which were done using framework for flexible querying Tokaf. We extended standard algorithms for searching k bet answers, using new heuristics. These heuristics were also tested
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CMS Joomla! and Ontopia Knowledge Suite Integration
Hazucha, Andrej ; Kliegr, Tomáš (advisor) ; Nekvasil, Marek (referee)
The aim of this thesis is to outline issues related to integration of Content Management Systems and Knowledge Bases based on semantic web technologies. The work begins with semantic technologies research and their use cases. The possibilities and proposals of integration of these technologies into CMS and collaborative wikis are discussed. As far as the most of open-source CMS are based on PHP platform tools written in PHP are insisted. CMS Joomla! and Ontopia Knowledge Suite integration is demonstrated in practical the part of the thesis. Possibility to communicate with different systems that allow HTTP requests is presented, too. Joomla! and OKS communication is through RESTful TMRAP protocol implemented in OKS. The query language used in this case is tolog. Communication with SPARQL endpoint or XML database is also demonstrated. Raw XML returned from Knowledge Base data source is transformed by XSLT into (X)HTML fragments. The transformations are user defined. Created demo application is included into SEWEBAR project. This application enables to incorporate results of semantically rich queries into analytical reports of data mining tasks within CMS Joomla! Interface.
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Using semantic technologies in markup languages
Štencek, Jiří ; Nekvasil, Marek (advisor) ; Kliegr, Tomáš (referee)
This bachelor thesis analyzes the use of semantic technologies in the field of today's web portals. The aim is to map the major web servers and services. Work on the contrary seek cover all sites (blogs, corporate sites, etc.) that use semantic technologies, as it had almost no meaningful value. Contribution of this work should be an analysis of the implementation of semantic technologies on the Internet. This should show how much vision of the Semantic Web expands. How many web sites use this technology. Web sites that we use every day and which offer capabilities and features that we might not even know. Other benefits could be for example: extending the use of Semantic Web tools (Operator plugin, Semantic Radar), information awareness among Internet users who have never heard about this term. In other hand, it could be a basis to further and more detailed mapping of semantic sites. For example, statistically-oriented work on the utilization rates of ontological dictionaries. The work begins with an introduction to the world wide web as a beginning to the present, outlining the basic ideology WWW. Show us the pitfalls of the current WWW and its possible further development line. Chapter entitled Understanding the Semantic Web describes the basic building stones and architecture of this vision. Describes the framework RDF, ontology, and not forget the section on the safety of the Semantic Web. With this knowledge we have chapter Integration semantics on the current WWW to learn about options, where to find the necessary metadata and related principles of Linked Data. metadata to (X) HTML. More specifically, we describe microformats, RDFa and the eRDF. Conclusion chapter makes the comparison of these technologies and and show us practical examples of their implementation. The last chapter, which is called Analysis of the use of knowledge technologies now brings you an overview of the servers that use one of the above technologies. Describes the open source database, semantic search engines, ontological dictionaries and finally community and information portals. The results of the present chapter is a summary of the implementation and reflection on the real benefits and possible incentives Semantic Web.
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Ontology-Driven Self-Organization of Politically Engaged Social Groups
Belák, Václav ; Svátek, Vojtěch (advisor) ; Nováček, Vít (referee)
This thesis deals with the use of knowledge technologies in support of self-organization of people with joint political goals. It first provides a theoretical background for a development of a social-semantic system intended to support self-organization and then it applies this background in the development of a core ontology and algorithms for support of self-organization of people. It also presents a design and implementation of a proof-of-concept social-semantic web application that has been built to test our research. The application stores all data in an RDF store and represents them using the core ontology. Descriptions of content are disambiguated using the WordNet thesaurus. Emerging politically engaged groups can establish themselves into local political initiatives, NGOs, or even new political parties. Therefore, the system may help people easily participate on solutions of issues which are influencing them.
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Community portal
Rosík, Jiří ; Nekvasil, Marek (advisor) ; Schenk, Jan (referee)
The aim of this work is to map the sphere of community portals, to determine what are the characteristics of users and how they behave. Subsequently, this knowledge confront with the current state. In the sphere of semantic web technologies are still solved the problem of their introduction into practice. The work aims to describe these technologies and find out how it can be in the field of social networks applied and where can they find the application. For those, who want to start their own small community portal is designed solution in the form of simple application, based on free available technologies. Here is the aim to provide warp and inspiration to set up a similar project. Taken into account is the economics, which is intended to outline the sphere of financing community portal in its infancy. At the end we specify problems and difficulties faced by entrepreneurs of existing sites. The main contribution consists of an analysis of studies on users of community portals and deduction the knowledge about behavior and characteristics of these participants. You can apply this information for marketing or any other work in the field of social networks. The contribution of the practical part of the work lies in exploring the applicability of semantic technologies in social networks and the subsequent implementation of any proposal. For those interested in establishing the portal is a useful proposal for their own applications, including economic aspects.
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Semantic Web Services
Kmoníček, Ondřej ; Brabec, Tomáš (advisor) ; Hejtmánek, Jakub (referee)
Práce se v praktické části zabívá analýzou procesů a popisem fiktivní Webové Služby, která má najít a uzavřít nejlepší stavební spořenní zapsaných v OWL-S. Teoretická část popisuje principy sémantického webu a některé jeho technologie. Podává částečný úvod do webových služeb a propojení principů sémantického webu a webových služeb. To znamená sématické webové služby.
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Semantic Web Services
Horáková, Markéta ; Brabec, Tomáš (advisor) ; Řimnáč, Martin (referee)
Práce seznamuje pokročilejší uživatele webu s principy sémantického webu a s technologiemi webových služeb. Také uvádí možnosti budoucího vývoje webových služeb směrem k sémantickým webovým službám. Text je rozdělen do tří hlavních částí. První část pojednává o sémantickém webu, jeho hlavních principech a technologiích pro jeho realizaci. Také se zmiňuje o možnostech využití těchto technologií. Druhá část se zabývá webovými službami. Seznamuje čtenáře se standardy, na kterých jsou webové služby založeny, a zabývá se i způsoby jejich uplatnění v praxi. Poslední část pojednává o sémantických webových službách, které využívají obou technologií popisovaných v předchozích částech. Uvádí možné výhody kombinace těchto technologií a několik návrhů takového řešení.
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