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Branch text classification
Čech, Josef ; Spousta, Miroslav (referee) ; Raab, Jan (advisor)
This thesis follows up text categorization. In the first part are described several chosen algorithms for a categorization of documents - the Bayesian model, a categorization with a neural networks and a vector model. Practice part is focused on a algorithm vector model. The vector model is based on idea of two vectors. One vector represents a pattern and second a query. In our case first vector corresponds with a category and the second one with the document. Coordinates of the vector are weights of single words in the text or in the branch depends on, which vector we think about. For comparing are possible to use several procedures like Dice coefficient similarity, Jaccard coefficient or cosine similarity. In my thesis is used cosine similarity. Computing weights is based on frequency of the term in the document and on frequency of documents, which contain the term. Relevant terms are selected on Luhn simple ideas of significance words.
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The influence of speed asymmetry on TCP/IP
Musil, Petr ; Spousta, Miroslav (referee) ; Peterka, Jiří (advisor)
The goal of present work is to determine, how does asymmetry of tranfer path (its transfer rate) influence effectiveness of TCP/IP protocols. Protocol, which is defined by the standard, is judged theoretically at first. How much does maximum exploit of tranfer rate in one direction influence load of the oposite direction of transfer path. The empirical test is made consequently. Application and transmission protocols which are often used are judged. The results are than compared with already publicated guesses and conclusions. There is going to be declared maximum ratio of transfer rates of the transfer path at the end, in condition of fully exploitation of one transfer direction.
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Information system of a language school
Kunčar, Jiří ; Bejček, Eduard (referee) ; Spousta, Miroslav (advisor)
The goal of the thesis is to design and implement a modular information system for a company particularly involved in teaching of foreign languages, interpreting and translating. The work includes analysis of business processes and solves problems in the design of the database scheme. The main parts of the system include modules for course records, users administration and the creation of accounting documents. The system is implemented with the help of technology PHP and framework CakePHP using the MySQL database to store structured data. The thesis analysed the bene ts of frameworks in the development of web applications and the potential usage of existing content management systems.
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Automated checking of C language programs
Doucha, Martin ; Spousta, Miroslav (referee) ; Mareš, Martin (advisor)
In the present work I study ways of checking common beginner mistakes in C language programs using static analyses of source code and generating run-time checks. Part of this work consists of implementation of several simple static analyses and run-time check generators focused on detecting beginner mistakes and locating them in the source code as accurately as possible. I have chosen the LLVM Compiler Infrastructure and Clang frontend as a basis for the implementation. In this text, you will find a brief programmer's introduction to the LLVM Compiler Infrastructure and a description of newly implemented tools. The main goal of this work is to enable using the C programming language for basic computer programming course.
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Pasivní monitorování spojení v IP sítích
Veselý, Ján ; Spoustová, Johanka (referee) ; Spousta, Miroslav (advisor)
In the presented work we examine the possibility of real-time network data analysis. A proof-of-concept application is designed and implemented. The application captures network traffic and filters out the most common transport protocols - TCP and UDP. The application is able to use provided plugins for analysing DNS and HTTP application layer protocols. The application is extensible in the means of the protocol support and packet capture mechanism. Captured data are analysed in the real-time and the results are presented in a user-friendly way.
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Data consistence in shared environment
Vitásek, Matej ; Spousta, Miroslav (referee) ; Pergel, Martin (advisor)
The focus of this work lies on two problems emerging in systems allowing concurrent access of multiple users to shared data. Small amounts of data have to be locked to ensure serial access, synchronization of bigger volumes requires a versioning mechanism. Firstly, a way of implementing shared data locking using the means of RDBMS is proposed. Secondly, a synchronization mechanism is demonstrated, which allows a part of data to be managed "off-line" and seamlessly synchronized back to the database. An implementation of both algorithms is demonstrated on a multi-tier budgeting application.
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Multiplatform build system
Kouřil, Přemysl ; Spousta, Miroslav (advisor) ; Raab, Jan (referee)
Build system is an important part of software projects and almost all processes involved in software development are more or less connected to a build system. A complexity of a build system increases accrodingly to a complexity of a software project. The goal of this thesis is to introduce a proposal for a build system suitable for use in highly multiplatform projects and adapted to a specific needs of software developed in enterprise environment. This thesis first defines context and provides an overview on the topic and then analyzes theoretical aspects of key problems. Brief analysis of build tools is included in this thesis. Based on a comparison of available technologies and analysis of key problems a build system proposal is introduced for the specific class of software projects. SCons tool is used as a core of proposed build system. Thesis shall provide a developer with an apparatus strong enough so that developer is able to implement a build system that satisfies all key attributes which determine good build system.
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Automatic Tool for Obtaining Data for TV Programs
Černý, Michal ; Spousta, Miroslav (referee) ; Raab, Jan (advisor)
Main goal of this work is to create reference guide to system ATOD TV that I have developed in Java language as a part of the bachelor thesis. ATOD TV editors are used in particular to simplify the work in the production of television programs for various clients. The system contains components to facilitate the work of obtaining data and data processing in a single form. At the end of the system is presented in the case of data processing for one station.
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Cryptography and Its Application in Secure Data-File Transfer
Pop, Tomáš ; Spoustová, Johanka (advisor) ; Spousta, Miroslav (referee)
In the present work we study applied cryptography. . . The goal of this work is not to study algorithms from the mathematical or statistical view, instead we are trying to look at cryptography from a poin of view of the "end consumer or "programmmer. It should help the reader to find an appropriate algorithm for his program. The application on the end of the work is written to as readable as possible.
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