This work presents the topic of data mining on the web. It is focused on clustering. The aim of this project was to study the field of clustering and to implement clustering through the k-means algorithm. Then, the algorithm was tested on a dataset of text documents and on data extracted from web. This clustering method was implemented by means of Java technologies.

This thesis deals with design and implementation of a web application to support interactive tuition in programming within the IZP - Course of Programming Essentials. It enables students submit their own solutions to a specific task and allows them to review some tasks completed by other students. Web pages are created with respect to maximum accessibility of their content and functionality. Their layout and controls are designed in such manner to make them accessible both by alternative browsers as well as by people with specific needs. The application design is created using the UML modelling language. The very application is implemented using the PHP script language together with theXHTML, cascade style sheets (CCS) and the MySQL database system. This thesis also focuses on implementation of the system on FIT websites and its utilisation by students.

Internet and websites are today one of the most important communication channels of almost all companies. They offer a simple, fast and effective way of communication, which is also available worldwide in a few seconds. With the globalization of market, more and more companies try to expand their business beyond the territory of the home state. In the current time of start-ups is the Internet also often a medium that allows formation of new spheres of business for which the website is absolutely essential channel. This type of business is internet based and has very often international ambitions from the very beginning. Given that each country (or region) can be seen as distinctive culture, it is advisable to locate websites for the needs of the foreign country. This is exactly the theme of this thesis. The concrete objective of this thesis is to offer a methodology for website localization in terms of webdesign. The basic building block is the delimitation of a multidisciplinary theoretical framework that examines the concept of culture and extensive literature review allowing current insight into the linking of website and culture, i.e. cultural website localization. Suitable method for gripping such a complex concept as a culture emerge from a theoretical framework as well. As the most appropriate method were determined Hofstedes cultural dimensions, which are then used for the analysis of cultural determination of web elements. Data collection for the purpose of analysis of web elements cultural determination is performed using a content analysis of websites from nine different countries. The results of the analysis are compared and synthesized with the findings stemming from a literature review. The final artifact of this thesis, a methodology for website localization from the perspective of web design, is based on this ground. Validation of the proposed methodology is done on the basis of assessment of the methodology for a domain of web design. This assessment is based on interviews with experts from different countries as well as presentation of concrete example of methodology use within a midsize website.

The first part of the thesis deals with the methods and tools that can be used to retrieve data from websites and the tools used for data mining. The second part is devoted to practical demonstration of the entire process. Web Czech Dance Sport Federation, which is available on www.csts.cz , is used as the source web site.

This thesis is about complex search engine optimalization (SEO) of web presentations and its promotion within advertising campaigns which are based on pay-per-click (PPC) system. Theoretical pieces of knowledge are obtained from scientific sources, especially from the knowledge of the author (writer). The purpose of this thesis is to analyze available methods and progresses in sphere of optimalization of web presentation and its effective promotion. The thesis is separated into three main parts to achieve these goals (aims) above: introduction of problemacy, analyses of particular methods and progresses of optimalization of web presentation and research of effectiveness available PPC systems in the Czech Republic. The main contribution of the thesis is the research relevant to comparison of analyses and effectiveness of PPC systems.

The main subject of this work is to design methodology of building an authoritative content website. The first part examines the current status of methodologies for web application development and software in general. Further the Lean Startup methodology for creating business plan is analyzed. The next chapters are dedicated to own methodology that covers all the steps of creating a website. From the very idea, moving towards the creation of the business model, defining the theme of the website, determining of target groups, methods of monetization, competition and competitive advantages. Continuing with information architecture design using the keyword classification analysis and multidimensional view of data, which are search queries. For the entire web development offers an analysis of languages and tools. During the subsequent working of the web online, methodology explores the possibilities of online traffic monetization. In the practical part the methodology is verified by using the defined metrics using the example of an international website draft in English on the topic of recipes for cooking. The outcome of this work is the proposed methodology for authoritative content website and design of website unirecipes.com.

This thesis deals with conversion rate optimization and evaluation of its results. Thesis introduces and compares conversion rate optimization options -- web analytics, heatmaps, user testing and A/B testing. The practical part consists conversion rate optimization of Faculty of Management website and quantification its results.

The presented thesis deals with the task of automatic information extraction from HTML documents for two selected domains. Laptop offers are extracted from e-shops and free-published job offerings are extracted from company sites. The extraction process outputs structured data of high granularity grouped into data records, in which corresponding semantic label is assigned to each data item. The task was performed using the extraction system Ex, which combines two approaches: manually written rules and supervised machine learning algorithms. Due to the expert knowledge in the form of extraction rules the lack of training data could be overcome. The rules are independent of the specific formatting structure so that one extraction model could be used for heterogeneous set of documents. The achieved success of the extraction process in the case of laptop offers showed that extraction ontology describing one or a few product types could be combined with wrapper induction methods to automatically extract all product type offers on a web scale with minimum human effort.

Many legal institutions require a burden of proof regarding web content. This thesis deals with a problem connected to web reconstruction and archiving. The primary goal is to provide an open source solution, which will satisfy legal institutions with their requirements. This work presents two main products. The first is a framework, which is a fundamental building block for developing web scraping and web archiving applications. The second product is a web application prototype. This prototype shows the framework utilization. The application output is MAFF archive file which comprises a reconstructed web page, web page screenshot, and meta information table. This table shows information about collected data, server information such as IP addresses and ports of a device where is the original web page located, and time stamp.

Thesis aims to present the current situation of social plugins growth. It examines social plugins from users and website owner point of view. At the beginning, the work reminds of web present emergence and comes after with emergence of social plugins. Work examines also the terminology of term "social plugin". Social plugins (as is Facebook Like button) are described in chapter Type of social plugins, after this comes chapter about practical usage of social plugins. Parts of this chapter are case studies and evaluations of advantages and disadvantages. Last chapter follow social plugins from the user's point of view. The subjects of examination are motivation to share information online and present results of studies and research, which has been prepared by author of this thesis. In enclosure can be found complete list of the most exploited social plugins including their functions and possibilities of usage.