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Integrace v systému VirGIS a na sémantickém webu
Linková, Zdeňka
Integration has been an acknowledged data processing problem for a long time. However, there is no universal tool for general data integration. Because various data descriptions, data heterogeneity, and machine unreadability, it is not easy way. Improvement in this situation could bring the Semantic Web. Its idea is based on machine understandable web data, which bring us an opportunity of better automated processing. The SemanticWeb is still a future vision, but there are already some features we can use. The paper describes how is integration solved in mediation integration system VirGIS and discusses use of nowadays Semantic Web features to improve it. According to the proposed changes, a new ontology that covers data used in VirGIS is presented.
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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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Socialn and community networks
Harášek, Luboš ; Nekvasil, Marek (advisor) ; Chudán, David (referee)
The aim of thesis is to examine and compare the most important world and Czech internet social networks. For these social networks then secondly to describe the benefits to society and their usability in marketing, but also their seamy sides which represent a danger for users. The objectives of this thesis are the exploration of the internet and book resources and their evaluation. Another source of support for the research results is an Internet questionnaire. This bachelor thesis is divided into four main parts. The first explains the theory of the social and community networks, Web 2.0 and Semantic Web. The second part describes the various social networks and compared their basic services. This is followed by a summary of trends in social networks, the benefits and dangers of social networks. In the last part are presented the results of Internet surveys and reflection on the ideal social network. Benefit of this thesis is to create an overview of most social networks and alert readers to the dangers of these social networks. In reflecting on the ideal social network, describes how this social network might look like, what would allow and how it was solved. Poll among Internet users, shows the view of respondents on the issue and their behaviour in social networks.
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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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Social Bookmarking
Holásek, Jakub ; Rauch, Jan (advisor) ; Svátek, Vojtěch (referee) ; Nováček, Jan (referee)
Práce je základním informačním podkladem pro pochopení Social Bookmarkingu, jeho aspektů, nástrojů a využití nejen pro jednotlivé uživatele ale i pro skupiny. Zahrnuje zhodnocení těchto nástrojů, jejich kladné i záporné stránky včetně praktických ukázek.
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Ontology Learning and Information Extraction for the Semantic Web
Kavalec, Martin ; Berka, Petr (advisor) ; Štěpánková, Olga (referee) ; Snášel, Václav (referee)
The work gives overview of its three main topics: semantic web, information extraction and ontology learning. A method for identification relevant information on web pages is described and experimentally tested on pages of companies offering products and services. The method is based on analysis of a sample web pages and their position in the Open Directory catalogue. Furthermore, a modfication of association rules mining algorithm is proposed and experimentally tested. In addition to an identification of a relation between ontology concepts, it suggest possible naming of the relation.
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