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Text Classification Methods in the Context of Web Pages
Trstenský, Patrik ; Bartík, Vladimír (referee) ; Burget, Radek (advisor)
This work deals with the issue of text classification in the context of websites. It examines available classification methods and their accuracy over web page plain text. It deals with constructing a dataset for training these methods for a specific domain. We obtain data for creating the dataset from publicly available websites that utilize RDF documents defined in HTML code. The conclusion of the work consists of the creation of two datasets for two different domains. Furthermore, the use of these datasets for training models and testing of their accuracy.
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Využití propojených otevřených dat skrze webová API
HELLER, Dominik
This bachelor thesis focuses on the topic of linked open data utilization by the means of application programming interface of representational state transfer architectural style. The main goal of the thesis is to analyse the current state of the field in regards to semantic web technologies and their relations to more traditional approaches to data publication and extraction. More precisely the proposed goal is to formulate a programming solution which would allow to publish, consume and manipulate the semantic data, otherwise accessible only via SPARQL endpoints, in very well-known and notably convenient way.
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Generating Program Code from Ontology Definition
Svetlík, Tomáš ; Hynek, Jiří (referee) ; Burget, Radek (advisor)
This master thesis deals with the process of generating source code from ontology definition. It is advantageous to have ontologies in the source code representation, when developing ontological applications. This source code expresses ontology classes and properties. The main goal of this thesis is to develop an implementation of the tool that uses this process. The thesis describes the design, implementation and testing of this tool. The result is a fully functional source code generator. It is able to generate Java or Python source code. Functionality and reliability were evaluated according to testing with set of actually used ontologies.
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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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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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Application for Parallel Data Processing Control
Grepl, Filip ; Smrž, Pavel (referee) ; Dytrych, Jaroslav (advisor)
This work deals with the design and implementation of a system for parallel execution of tasks in the Knowledge Technology Research Group. The goal is to create a web application that allows to control their processing and monitor runs of these tasks including the use of system resources. The work first analyzes the current method of parallel data processing and the shortcomings of this solution. Then the work describes the existing tools including the problems that their test deployment revealed. Based on this knowledge, the requirements for a new application are defined and the design of the entire system is created. After that the selected parts of implementation and the way of the whole system testing is described together with the comparison of the efficiency with the original system.
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Semantic Analysis of Web Content
Hubl, Lukáš ; Rychlý, Marek (referee) ; Burget, Radek (advisor)
This work deals with the topics of semantic web, web page segmentation and technologies, which are used in this area. It also deals with a modification of one web page segmentation method, specifically DOM-based segmentation, using semantic web technologies. Thus, this work designs the way of web page segmentation based on semantic analysis of individual elements of the web pages content. An application that demonstrates the functionality of the designed segmentation method was also created within this work. With the implemented application, experiments were performed, whose results are also part of this work.
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Semantic Web - Tutorial and Examples
Hanyáš, Petr ; Chmelař, Petr (referee) ; Očenášek, Pavel (advisor)
This thesis deals with design and realization of interactive presentation consists of tutorial which topic is "Semantic Web" and related demonstration examples with comments. Thesis is also consists of users' and commentaries' administration, testing system with random generation of questions, fulltext search engine and description of ontology editors. The aim of whole thesis is to create educational materials with a possibility of checking reached level of knowledge. Motivation for making this thesis was lack of complete materials in Czech language dealing with this problem. My aim was to create these kinds of materials so it can be intelligible to wide range of readers.
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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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