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Sequential Pattern Mining
Tisoň, Zdeněk ; Zendulka, Jaroslav (referee) ; Hlosta, Martin (advisor)
This master's thesis is focused on knowledge discovery from databases, especially on methods of mining sequential patterns. Individual methods of mining sequential patterns are described in detail. Further, this work deals with extending the platform Microsoft SQL Server Analysis Services of new mining algorithms. In the practical part of this thesis, plugins for mining sequential patterns are implemented into MS SQL Server. In the last part, these algorithms are compared on different data sets.
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Bayesian Networks Applications
Chaloupka, David ; Rozman, Jaroslav (referee) ; Zbořil, František (advisor)
This master's thesis deals with possible applications of Bayesian networks. The theoretical part is mainly of mathematical nature. At first, we focus on general probability theory and later we move on to the theory of Bayesian networks and discuss approaches to inference and to model learning while providing explanations of pros and cons of these techniques. The practical part focuses on applications that demand learning a Bayesian network, both in terms of network parameters as well as structure. These applications include general benchmarks, usage of Bayesian networks for knowledge discovery regarding the causes of criminality and exploration of the possibility of using a Bayesian network as a spam filter.
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Artificial Intelligence Approaches for Spam Detection
Vránsky, Radovan ; Sekanina, Lukáš (referee) ; Schwarz, Josef (advisor)
This thesis deals with various methods used for spam detection and identification. In the introduction various methods are described. Then Bayes' theorem and methods for spam detection that use this theorem are described in detail. This section also discusses biological and artificial immune systems and methods for spam detection based on artificial immune systems. Next sections contain the description of custom spam detection system design and implementation. Finally the system is tested and the results are evaluated.
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Detection of SPAM Messages in Mobile Communication and Social Networks
Jaroš, Ján ; Rychlý, Marek (referee) ; Očenášek, Pavel (advisor)
This thesis deals with spam in mobile and social networks. It focuses on spam in SMS messages and web service Twitter. Theoretical part provides brief overview of those two media, informations about what spam is, how to defend against it and where does it comes from. There is also a list of methods for spam detection, many of them have their roots in filtration of email communication. The rest of thesis is about design, implementation of application for spam detection in SMS and Twitter messages and evaluation of its performance.
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Artificial Intelligence Approaches for Filtering of Spams
Matula, Tomáš ; Žádník, Martin (referee) ; Schwarz, Josef (advisor)
This thesis focuses on the e-mail classification and describes the basic ways of spam filtering. The Bayesian spam classifiers and artificial immune systems are analyzed and applied in this thesis. Furthermore, existing applications and evaluation metrics are described. The aim of this thesis is to design and implement an algorithm for spam filtering. Ultimately, the results are compared with selected known methods.
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Antispam protection of web pages
Orsák, David ; Míča, Ivan (referee) ; Kacálek, Jan (advisor)
This thesis deals with questions of spam especially for web pages. The work specifies the term spam, history of spam and that individual division according to way diffusion and type sight. Here is decrypted questions legislature for spam and assessment consequences for this issue. With problem of spam is closely linked the botnets, which are main sources of spam, in this thesis is decrypted how botnet work and witch botnets are the biggest in this time that mean botnet which delivered the most of spam per day. The main part this work is to defined and decrypted different ways of spam protecting websites. Here are given type of protection from basic protection for hardy form protection, name CAPTCHA. In the practical part of the thesis offers some variants CAPTCHA, which could be reused for antispam protection for web pages
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Model e-advertising Segment of the Selected e-commerce
Smrž, Marek ; Kovář, Libor (referee) ; Dvořák, Jiří (advisor)
Master’s thesis describes plus evaluates small firm that the deal with production plus sale ceramic performances. Work is divided on several part, in which survey especially on analysis e - commerce that the firm employs plus on his inadequacies, largely in the area e- advertising. Feature plus scope of employment is suggest mock - up e- advertising, that shall in connection with his costs viable.
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E-commerce and its Marketing
Musilová, Veronika ; Dvořák,, Jiří (referee) ; Dvořák, Jiří (advisor)
I will attend to creation suitable model of e-marketing for e-shop with flowers in my diploma work. The aim will by join the possible instruments of online marketing in order that the company can succesfully work on the Internet. and ensure the betterposition before the competition. I will focus on e-marketing and its individua instruments. I will make some analysis of the company, by virtue of I will propose what kind of e-marketing can company use. Last but not least I will attend to the aims, which company should achieve and own potential which should valorize.
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Concept of E-shop
Morávek, David ; Valenta, Jiří (referee) ; Dvořák, Jiří (advisor)
This thesis deals with a creation of a company´s electronic shopping. On the basis of the knowledge and information acquired from a theoretical part, the suggestion involves the best possibilities of electronic shopping that will lead to a stable and firm position on this kind of market, and to increase of the capital as well as the reputation of the company with potential customers.
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Antispam filters
František, Jiří ; Fojtová, Lucie (referee) ; Pust, Radim (advisor)
The thesis is involves the desing antispam solution for operating system GNU/Linux. At the first is going through theory of transport, receive mail message and problematic of spam. The content of thesis is realize mail server with mail transfer agent Postfix. Amavis was used as antispam solution, which make an interface between Postfix and content checkers. This was created by SpamAssassin and ClavAV. Main goal was created aplication for setting of antispam filters. The result is possibility of setting a creating filters with black and white lists. Messages in quarantine ca
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