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Genealogic Semantic Wiki
Brychová, Jana ; Smrž, Pavel (referee) ; Schmidt, Marek (advisor)
This thesis project is about possibilities of storing genealogic data in different formats and based on the results it suggests data format which can be used consequently as a source for the vizualization by semantic web. In the scope of the project there is a genealogic application implemented for KiWi platform. This application enable visualization of designed format using prefuse technology. There are basic and aslo some other usefull information about the basic technologies of the semantic web like RDF, XM, ontology, OWL language stated in the document.
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Graphical User Interface for Comparing RDF Models
Krčmář, Martin ; Šilhavá, Jana (referee) ; Smrž, Pavel (advisor)
Práce se zabývá vizualizací rozdílu mezi dvěma RDF modely. Jsou zde porovnávány existující nástroje a postupy, tyto nástroje jsou rozděleny do dvou kategorií. První kategorie reprezentuje textový přístup k zobrazování ontologií a potažmo jejich rozdílu, druhá zastupuje grafické metody. Na základě jejich zkoumání je navržen nový přístup. Konkrétně se jedná o nástroj, který podporuje paralelní textovou reprezentaci ontologií, která je obohacena o sémantické anotace (delta tags)
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Ontology-Based Content Management System
Čekan, Ondřej ; Bartík, Vladimír (referee) ; Burget, Radek (advisor)
This thesis deals with the analysis, design and implementation of a system based on semantic technologies and ontology languages. There is described the semantic web and its concept, technology of semantic web especially RDF and OWL and the ability to view on the Web. Another part of this work treats with the specification, analysis, design actual implementation of the system, which processes the ontology and allows users to create individual depending on the definition of the ontology. The created content is presented on the Web annotated. The result of this work is the demonstration application.
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Transformations of Ontologies
Kopecký, Marek ; Škoda, Petr (referee) ; Dytrych, Jaroslav (advisor)
This master's thesis describes importing the ontology in language OWL 2 into the internal structures of 4A annotation server. It is concerned in anonymous nodes, for example in anonymous classes or anonymous properties. The solution was to use the library The OWL API for import ontology. The solution also allows automatic generation of names to anonymous classes and properties.
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Transformation of Web Applications into Web Services
Zámečník, Miroslav ; Rychlý, Marek (referee) ; Weiss, Petr (advisor)
Present web is aiming to the possibility of automatization of user behavior on web applications. Adding of semantics and creation of web service interface are the main approaches for accomplishment of this user comfort. Nevertheless, this direction brings some problems which can make more difficult publishing and implementation of web documents. Web services can connect heterogeneous systems, because they are based on XML markup language that is a place where all applications can meet without lost of platform independence. The automatic transformation of a web application into a web service could be considerably more effective than to create a web service from the beginning. However, this step is for some applications almost unreal without knowledge of their inner structure. In most cases, the transformation will be done semiautomatically with help of human decisions.
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Comparison of RDF Databases
Chatrný, Jakub ; Burget, Radek (referee) ; Milička, Martin (advisor)
The goal of this thesis is compare of several RDF stores Blazegraph, Jena TDB and Stardog. Design of test suites is based on existings benchmarks. In the designed test suites are monitored execution time and number of results. The testing criteria of stores also include the time required to create persistent store and its size. All tested stores and the program for testing itself are implemented in Java.
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Knowledge Systems on the Semantic Web
Pinďák, Josef ; Zamazal, Ondřej (advisor) ; Svátek, Vojtěch (referee)
The aim of this paper is to understand problematic of knowledge systems on semantic web. Analyze case studies a cases of usage shown on web portal W3C and create knowledge basis for expert system NEST, which on basis of analysis of case study of case usage will recommend clasification to particular type of knowledge system. The aim is achieved by analysis of case studies and case usages. The result of analysis is to set criteria to case study or case usage. On base of criteria, which are passed to expert system. Expert system will recommend clasification of case study or case usage. Knowledge basis also used for its developement data from dissertation [1], where are knowledge basis already separated into individual categories. Benefit of this work is creation of expert system, which allows user to get recommendation how to determinate type of unknown knowledge system and its field of potentional usage. First two chapters are dedicated to theory of knowledge systems and semantic web. Third chapter explains the steps to usage of analysis and fourth chapter is dedicated to creation of knowledge basis for system NEST.
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Upper Ontology UMBEL in Terms of Ontology Mapping
Vataščinová, Jana ; Zamazal, Ondřej (advisor) ; Vacura, Miroslav (referee)
The aim of the thesis is to introduce the topic of semantic web and linked data, to provide a description of the Upper Ontology UMBEL, its mappings to other ontologies, and to create new mappings to UMBEL Ontology. The source for this paper are publications and official web pages that are related to the topic. For viewing and browsing ontologies, editor Protégé is used. For mapping ontologies to UMBEL Ontology, application LogMap and UMBEL Web Services for searching for Reference Concepts are used. Contribution of the thesis should be the description of UMBEL Ontology in Czech language and creation of new mappings to UMBEL Ontology. The paper firstly provides a brief introduction to the topic of semantic web, linked data and ontology mapping. Then the thesis describes UMBEL Ontology, vocabularies in LOV and ontology mappings to UMBEL Ontology. Finally, newly created mappings to UMBEL Ontology are presented.
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Modelování událostí na sémantickém webu
Hanzal, Tomáš ; Svátek, Vojtěch (advisor) ; Vacura, Miroslav (referee)
There are many ontologies and datasets on the semantic web that mention events. Events are important in our perception of the world and in our descriptions of it, therefore also on the semantic web. There is however not one best way to model them. This is connected to the fact that even the question what events are can be approached in different ways. Our aim is to better understand how events are represented on the semantic web and how it could be improved. To this end we first turn to the ways events are treated in philosophy and in foundational ontologies. We ask questions such as what sorts of things we call events, what ontological status we assign to events and if and how can events be distinguished from other entities such as situations. Then we move on to an empirical analysis of particular semantic web ontologies for events. In this analysis we find what kinds of things are usually called events on the semantic web (and what kinds of events there are). We use the findings from the philosophy of events to critically assess these ontologies, show their problems and indicate possible paths to their solution.
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Design of Data Structures using RDFS/OWL
Horáková, Linda ; Dudáš, Marek (advisor) ; Mynarz, Jindřich (referee)
The main aim of the bachelor thesis is to explore possibilities and advantages of publishing statistical data on Semantic Web according to Linked Data Principles. In theoretical part readers are familiarized with basic features of Semantic Web, principles and options of publishing Linked Data. The thesis is mainly focused on an analysis of existing vocabularies used for description of statistical data, especially in the field of public spending. The outcome of the analysis is the statement that general vocabularies are more suitable for description of statistical data, because they provide wider possibilities than proprietary ontologies. The result of the analysis was verified by the draft concept of data structure describing the field of public spending, which is based on general Data Cube Vocabulary. The practical part of the thesis also contains construction of SPARQL query which can be used for automatic transformation of current data to the shape that is suitable to the new data structure.
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