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RDF Repository in PHP
Raška, Jiří ; Chmelař, Petr (referee) ; Burget, Radek (advisor)
This Bachelor Thesis describes a problem of design and implementation a RDF repository in PHP. This thesis solves storing data model RDF in relational database and solves implementation of subset query language SPARQL. Part of this thesis are performance and functional tests with implemented RDF repository.
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Multimedia Diff - Audio Documents
Komadel, Michal ; Dittrich, Petr (referee) ; Chmelař, Petr (advisor)
This work describes development of a diff tool working with audio files containing general sound such as music, speech and other sounds. There are presented facts from different domains of science related to sound, such as psychoacoustics, speech recognition and automatic music genre categorisation. This paper also contains description of some diff algorithms and external tools needed for development of the goal application. Moreover, there is introduced design and implementation of the application, settings used for sound features extraction and evaluation of attained results.
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Graph Isomorphism Problem in Databases
Stejskal, Roman ; Jirák, Ota (referee) ; Chmelař, Petr (advisor)
This project introduces history and basic notions of the graph theory. It describes graph theory problems, possible graph representations and practical graph management in databases. Aims to subgraph and graph isomorphism. It describes possible ways to find graph isomorphism and chosen algorithms for subgraph and graph isomorphism. The experimental part aims to comparing two implemented algorithms. These are Ullmann and VF2 algorithm. Also searches difference between graphs stored in memory and graphs stored in database.
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Database Archive of Image Medical Data
Sára, Vítězslav ; Chmelař, Petr (referee) ; Kršek, Přemysl (advisor)
This Thesis deals with the problems of medical image data management. It analyzes a metadata extraction problem from medical format DICOM and their efficient saving. System is designed as a client-server application. System provides an interface for DICOM data storing, interface for searching, data editing and exporting. System cooperatives with the collaborative system VCE. Implementation was carried out in C++ and PHP language with support of SQLite and MySQL database.
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Data Mining on Oracle Database Server and MS SQL Server
Opršal, Martin ; Chmelař, Petr (referee) ; Stryka, Lukáš (advisor)
This bachelor's thesis deals with issue of knowledge discovery in databases. This document is focused in getting rules from relation databases based on Microsoft SQL server or Oracle Data mining server. The practical part of this document is about design applications that run on both servers. These applications are programmed in asp.NET, C# for Microsoft SQL server and Java for Oracle server.
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Database Performance Tuning
Paulíček, Martin ; Ruttkay, Ladislav (referee) ; Chmelař, Petr (advisor)
The objective of this thesis was to study problems of an insufficient database processing performance and possibilities how to improve the performance with database configuration file optimizations, more powerful hardware and parallel processing. The master thesis contains a description of relational databases, storage media and different forms of parallelism with its use in database systems. There is a description of the developed software for testing database performance. The program was used for testing several database configuration files, various hardware, different database systems (PostgreSQL, Oracle) and advantages of parallel method "partitioning". Test reports and evaluation results are described at the end of the thesis.
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Knowledge Discovery in Multimedia Databases
Málik, Peter ; Bartík, Vladimír (referee) ; Chmelař, Petr (advisor)
This master"s thesis deals with the knowledge discovery in multimedia databases. It contains general principles of knowledge discovery in databases, especially methods of cluster analysis used for data mining in large and multidimensional databases are described here. The next chapter contains introduction to multimedia databases, focusing on the extraction of low level features from images and video data. The practical part is then an implementation of the methods BIRCH, DBSCAN and k-means for cluster analysis. Final part is dedicated to experiments above TRECVid 2008 dataset and description of achievements.
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Data Mining in Data Stream
Sýkora, Petr ; Chmelař, Petr (referee) ; Zendulka, Jaroslav (advisor)
This thesis deals with the data mining in data stream which represents fast developing area of information technology. The text describes common principles of data mining, explains what data stream is and shows methods for its preprocessing and algorithms for following data mining. The special attention is given to the VFDT and the CVDT algorithm. The next mentioned are the spatiotemporal data and related data mining. The second part describes the design and implementation of the application for classification over spatiotemporal data stream represented by road traffic data and following prediction of spatiotemporal events (traffic-jams). The classification is performed by the VFDT and CVFDT algorithm. The application has been tested on the data set obtained by the simulation tool SUMO.
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Local-Based and Cloud-Based Systems Management
Nováček, Radek ; Chmelař, Petr (referee) ; Mlích, Jozef (advisor)
The master thesis deals with analysis of existing solutions and architecture design of new solutions for management of unix-like systems. The resulting system is usable for configuration of the local system over the D-Bus and remotely over the network. Usability for cloud computing has been considered during design.
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