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Searching Semantically Annotated Texts
Grešová, Katarína ; Smrž, Pavel (referee) ; Dytrych, Jaroslav (advisor)
This thesis deals with the issue of semantic searching over indexes of big text data. The aim of this thesis is to design and implement a search engine with web user interface enabling dynamical configuration of access to indexes and editing annotations in the text. The thesis analyzes the current search engine solution and its shortcomings, which results in a specification of requirements for a search engine that is suitable for common use and fulfils the potential of all search engine related tools. The thesis also describes the design, implementation and testing of the resulting system, which also includes an extension in a form of global constraints, which increases the accuracy of the requested search result description.
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Administration Interface of an Information Extraction System
Gongol, Jakub ; Bartík, Vladimír (referee) ; Burget, Radek (advisor)
This thesis covers the subject of information extraction from Web. The main objective is the design and implementation of an administration interface for an extraction system implemented as web application on Java platform. The application provides an editor for extraction tasks specification in the form of interactive graphs. It includes the possibility to upload and process an ontology from a file and generate graph according to selected ontology properties. The solution ensures integration with the FITLayout tool.
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Semantic web in the confrontation with Peirce's Semiotics
Řeháčková, Dana ; Fišerová, Michaela (advisor) ; Švantner, Martin (referee)
The Semantic web was created for the conceptualization of data available on the Internet. Through formalized representations that are determined for data sharing and reusing, its vision should be achieved. One of the main aims of the Semantic web is to achieve answers to a searched question which demonstrates high exactness and relevance. The controversy and polysemy of the term "Semantic web" lets us consider the question: "What is the limit of involving semantic aspects provided on Semantic web?" Is it not only the amount of determinations of specific standards that are connected with data itself? The main aim of this thesis is to compare the use of the terminology appearing on the Semantic web in semantic metadiscourse with traditional academic semiotic approaches appearing from pragmatism of Ch. S. Peirce, Ch. W. Morris, and H. P. Grice. The main thesis aim is to clarify the function of semantic web, basically its function and its conception, by comparation academic's semiotics' approaches of pragmaticism Ch. S. Peirce and pragmatism H.P. Grice to help with mapping the problematic area which is connected with using terms such as "meaning," and "understanding," and to explore and make less confused the possibilities of the function of the Semantic web.
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Utilization of Knowledge Systems and Bases for Selection and Evaluation of Domestic Electrical Installations.
Haluza, Miroslav ; Martínek, Zbyněk (referee) ; Gurecký, Jiří (referee) ; Toman, Petr (advisor)
My doctoral thesis deals with use of the sophisticated methods for the selection of technical and economic solution of electrical wiring. This solution is based not only on a price but also on many other criteria such as a comfort, service, durability etc. The focus of the work is a treatise on wiring systems from a global perspective, where it is impossible to use a conventional approach for objective evaluation and selection of the appropriate electrical wiring system (because of the complexity of such systems and their interdependencies). In the four chapter are given information of an energy consumption (the total consumption and household consumption). In this chapter is given also a consumption prediction – especially for households. Following is an overview of possible measures for reducing electricity consumption in households. In the next part of this thesis are solved the knowledge, respectively expert systems for use in an electrical engineering – especially for a suitable tool for the selection and evaluation of households wiring electrical system. The result of this work provides a possible solution for a selection of wiring electrical system for households (focusing on the intelligent wiring) – from a technical and economic point of view and with using an innovative approach. The main contribution of this work is a proposal of the main part of the knowledge base. This base could be as a basis for knowledge, respectively for an evaluating technical and economical solution of an electrical wiring system – the expert system includes also a feedback function of an effectiveness solution, use value, price etc., which would also serve as a knowledge base.
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Ontology Based Information Extraction from the Web
Buba, Vojtěch ; Bartík, Vladimír (referee) ; Burget, Radek (advisor)
The main aim of this thesis is an extraction of information from web based on conceptual modeling with ontology. The main goal of this thesis in question is implementation of a tool, which process input ontology and enable additional editing through graphical user interface. Readers of this thesis will be introduced with languages for writing ontologies, for example RDF, RDFS or OWL. Two extraction methods which use ontologies to describe extracted informations are also explained. Final solution is designed to consider all needs of extraction task defined by Ing. Radek Burget Ph.D. Output of this tool is definition of extraction task compatible with solution FITLayout, being developed at FIT BUT.
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Web application for presentation integrated inspection data
Finger, Artur ; Nečaský, Martin (advisor) ; Knap, Tomáš (referee)
An initiative arises across the globe, to publish government data as Linked Data, thus con- necting it to other parts of the semantic web. Together the data forms the Linked Data Cloud, which serves as a rich data source for numerous applications. Overcoming unexpected pro- blems, we managed to convert data about inspections carried out by the State Veterinary Administration into that format. For that we used an ETL tool called UnifiedViews. Resulting data were described using well-known RDF ontologies. Then, also using UV, we integrated this data with Linked Data of the Czech Trade Inspection Authority. We created a web ap- plication, that uses this integrated database to search for fair businesses. Using a database server called Virtuoso, we managed to implement search by geographical coordinates. Our application is extensible by new data sources and extracted SVA data are available as open Linked Data.
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Webová aplikace pro analýzu a vizualizaci legislativního procesu postavená na principech Linked Data
Vondra, Vojtěch ; Nečaský, Martin (advisor) ; Knap, Tomáš (referee)
The aim of this thesis is to create a new dataset containing bills being passed in the Czech Parliament. It creates an ontology describing the legislative process and the individual stages of passing the bill. Both the dataset and ontology will use RDF to semanticize public exports provided by the Czech Chamber of Deputies. To create the ontology, it is attempted to specialize existing ontologies such as FRBR to describe data with a narrower domain. Resources representing bills are linked to other ontologies to connect the dataset into the Linked Data cloud. For practical presentation of the created dataset, new visualization plugins are programmed into Payola, an open-source Linked Data management tool, using HTML5 technologies. Powered by TCPDF (www.tcpdf.org)
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Creation of a dataset containing publications of Charles University according to the Linked Data principles
Hladík, Tomáš ; Klímek, Jakub (advisor) ; Knap, Tomáš (referee)
The aim of this thesis was to create a dataset about publications of Charles University, that will be friendlier for computer processing and subsequent visualization. There is already existing official application, which includes every publication issued by Charles University, nevertheless the application does not work perfectly because of the large amount of data. Information has been gained through exports in XML, further the data has been processed into the desired format, over which we can query much faster than it is in the official application. The process has been made by using programming language Java. We engage Charles University into the Linked Universities project, which brings together universities providing data in a computer-friendlier format.
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Semantic Navigator
Michelfeit, Jan ; Knap, Tomáš (advisor) ; Svoboda, Martin (referee)
The Semantic Web extends principles of the Web from documents to data. The Web of Data facilitates machines to understand the meaning of information. Semantic web search engines can take advantage of this fact and offer more precise search results and advanced query capabilities. The aim of this thesis is to use semantic data in web documents in order to enhance navigation between related web pages and bring advantages of semantic web search engines to ordinary users. We present Semantic Navigator as a solution to this task. Semantic Navigator is implemented as a Mozilla Firefox extension. The extension uses the Sindice search service for discovery of related documents and provides access to information summaries on Sig.ma.
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Semantic annotation of domain dependent data
Fišer, Dominik ; Vojtáš, Peter (advisor) ; Kopecký, Michal (referee)
One of the problems of semantic web is automated getting annotated data - web pages. Therefore this work is engaged in manual annotation of web pages and try to simplify this process for users using proposed methods. First part contains analysis of annotated data, users and vocabularies used for annotation. Afterwards are proposed methods which simplify annotation creation for users, the possibility of usage similar annotations or possibility highlight interesting parts of web page suitable for annotation. The work includes proposal of annotation tool user interface also that verifies proposed methods in practice. On the basis of this proposal was created a prototype implementation of the annotation tool Semantic Annotator as an extension for Google Chrome browser, which was also used for experiment verifying user-friendliness especially.
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