This dissertation studies the context-aware application with its proposed algorithms at client side. The required context-aware infrastructure is discussed in depth to illustrate that such an infrastructure collects the mobile user’s context information, registers service providers, derives mobile user’s current context, distributes user context among context-aware applications, and provides tailored services. The approach proposed tries to strike a balance between the context server and mobile devices. The context acquisition is centralized at the server to ensure the usability of context information among mobile devices, while context reasoning remains at the application level. Hence, a centralized context acquisition and distributed context reasoning are viewed as a better solution overall. The context-aware search application is designed and implemented at the server side. A new algorithm is proposed to take into consideration the user context profiles. By promoting feedback on the dynamics of the system, any prior user selection is now saved for further analysis such that it may contribute to help the results of a subsequent search. On the basis of these developments at the server side, various solutions are consequently provided at the client side. A proxy software-based component is set up for the purpose of data collection. This research endorses the belief that the proxy at the client side should contain the context reasoning component. Implementation of such a component provides credence to this belief in that the context applications are able to derive the user context profiles. Furthermore, a context cache scheme is implemented to manage the cache on the client device in order to minimize processing requirements and other resources (bandwidth, CPU cycle, power). Java and MySQL platforms are used to implement the proposed architecture and to test scenarios derived from user’s daily activities. To meet the practical demands required of a testing environment without the impositions of a heavy cost for establishing such a comprehensive infrastructure, a software simulation using a free Yahoo search API is provided as a means to evaluate the effectiveness of the design approach in a most realistic way. The integration of Yahoo search engine into the context-aware architecture design proves how context aware application can meet user demands for tailored services and products in and around the user’s environment. The test results show that the overall design is highly effective,providing new features and enriching the mobile user’s experience through a broad scope of potential applications.

This Master's thesis project aims to investigate if Wikipedia's clickstream data can be used to improve the retrieval performance of information retrieval systems. The project is conducted under the assumption that a traversal between two article connects the two articles in regards to content. To extract useful terms out of the clickstream data, it needed to be structured so that it given a Wikipedia article it is possible to find all of the in-going or out-going article traversals.The project settled on using the clickstream data in an automatic query expansion approach.Two expansion methods were investigated, one based on expanding with full article title so that the context would be preserved, and the other expanded with individual terms from the article titles.The structure of the data and two proposed methods were evaluated using a set of queries and relevance judgments. The results of the evaluation shows that the method that expands with individual terms performed better than the full article title expansion method and that the individual term method managed to increase the MAP with 11.24%.  The expansion method was evaluated on two different query collections, and it was found that the proposed expansion method only improves the results where the average recall of the original queries are low.The thesis conclusion is that the clickstream can be used to improve retrieval performance for an information retrieval system. / Det här examensarbetets mål är att undersöka om Wikipedias klickströmsdata kan användas för att förbättra sökprestanda för informationsökningssystem. Arbetet har utförts under antagandet att en övergång mellan två artiklar på Wikipedia sammankopplar artiklarnas innehåll och är av intresse för användaren. För att kunna utnyttja klickströmsdatan krävs det att den struktureras på ett användbart sätt så att det givet en artikel går att se hur läsare har förflyttat sig ut eller in mot artikeln. Vi valde att utnyttja datamängden genom en automatisk sökfrågeexpansion. Två olika metoder togs fram, där den första expanderar sökfrågan med hela artikeltitlar medans den andra expanderar med enskilda ord ur en artikeltitel.Undersökningens resultat visar att den ordbaserade expansionsmetoden presterar bättre än metoden som expanderar med hela artikeltitlar. Den ordbaserade expansionsmetoden lyckades uppnå en förbättring för måttet MAP med 11.21%. Från arbetet kan man också se att expansionmetoden enbart förbättrar prestandan när täckningen för den ursprungliga sökfrågan är liten. Gällande strukturen på klickströmsdatan så presterade den utgående strukturen bättre än den ingående. Examensarbetets slutsats är att denna klickströmsdata lämpar sig bra för att förbättra sökprestanda för ett informationsökningssystem.

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Denna uppsats undersöker hur sökmotoroptimering av en webbsida påverkar webbsidans tillgänglighet för människor. Tillvägagångssätt för sökmotoroptimering är väldokumenterade, och detsamma gäller viktiga principer för tillgänglighet. Dock beskrivs sällan sambandet däremellan.Först presenteras teori kring om tillvägagångssätt för sökmotoroptimering samt information om vad som påverkar webbplatsers tillgänglighet. Därefter beskrivs en fallstudie där effekten av sökmotoroptimering bedöms efter de väletablerade riktlinjerna Web Content Accessibility Guidelines 2.0.Studiens resultat visar att vissa aspekter av sökmotoroptimering gynnar tillgängligheten, men att det även kan finnas ett negativt samband. Exempel på positiv inverkan är vid publikationen av bilder på webbplatser, medan rubriksuppbyggnaden kan missgynnas av sökmotoroptimering.Slutresultatet är dock att tillgängligheten gynnas mer av sökmotoroptimering än vad den missgynnas av den. / This thesis examines how search engine optimization of webpages affects accessibility for human users. Methods for search engine optimization are well documented, as is the important principles of accessibility. However, the relationship between these factors is seldom described.First, the theory behind the approach to search engine optimization, and information about what affects the websites accessibility are described. Then a descriptive case study is presented where the effect of search engine optimization is assessed according to the established guidelines, Web Content Accessibility Guidelines 2.0.The results of the study demonstrate that certain aspects of search engine optimization benefit the accessibility, but that there are some aspects of search engine optimization that harm the accessibility, for example, the headline structure. However, the end result is that accessibility benefits more from search engine optimization than it is harmed by it.

Mathematics has been used to describe phenomena and problems in many re- search fields for centuries. The basic elements used in the description are formu- lae which express information symbolically. However, searching for mathematical knowledge in digital form using available tools is still cumbersome. We address this issue by presenting the mathematical search engine EgoMath, based on a full text searching, which can search for mathematical formulae and text. We perform an eval- uation over a large collection of documents showing that our solution is usable. Our approach can be used with huge document collections by applying one specialised technique. In order to provide a valuable evaluation of the quality, we built an al- ternative mathematical search engine using the feature extraction technique proposed by Ma et al. We propose important improvements to this solution achieving interest- ing results. We perform the first ever cross-evaluation of mathematical search engines based on different algorithms. A comprehensive survey of existing techniques avail- able, presented in this thesis, completes the picture of mathematical searching.

ABSTRACT Context: With growing number of online businesses, Search Engine Optimization (SEO) has become vital to capitalize a business because SEO is key factor for marketing an online business. SEO is the process to optimize a website so that it ranks well on Search Engine Result Pages (SERPs). Dynamic websites are commonly used for e-commerce because they are easier to update and expand; however they are subjected to indexing related problems. Objectives: This research aims to examine and address dynamic websites indexing related issues. To achieve aims and objectives of this research I intend to explore dynamic websites indexing considerations, investigate SEO tools to carry SEO campaign in three major search engines (Google, Yahoo and Bing), experiment SEO techniques, and determine to what extent dynamic websites can be made search engine friendly on these major search engines. Methods: In this research, detailed literature survey is performed to evaluate existing knowledge for SEO for dynamic websites. Further empirical experiments are conducted to address dynamic websites indexing problems; and to evaluate SEO techniques used in empirical experiments. Results: It is found that all major search engines, including Google, cannot fully index dynamic websites. I used some SEO techniques which I explored during this study to help dynamic webpage(s) get indexed in major search engines. The experiment results reflect the effectiveness of SEO techniques including URL encoding /friendly URLs on major search engines. Conclusions: I conclude that, dynamic websites are subjected to indexing related problems and require additional SEO efforts to appear in SERPs. Not all SEO techniques are equally effective on all search engines to improve indexing of dynamic webpage(s). Each implemented SEO technique has different impression on major search engines (Google, Yahoo, Bing, Ask, and AOL). As, the encoded URLs technique is effective on all major search engines. However, Yahoo and Bing prefer friendly URLs over typical URLs with parameters. Therefore, presentation of dynamic URL could be quite paying if it is needed to index dynamic website on search engines other than Google.

In my thesis, I focused on optimalization web sites for full-text search engines and other forms of promotion in the context of the Internet. The goal of my work is to apply various means of optimizing and promotion website to its life cycle and the ongoing processes in this life cycle. To achieve the goals I set out as follows thesis divided into three relatively independent parts. The first part is devoted to describing the life cycle of web and selected processes taking place in this life cycle. The second part is devoted to descriptions of individual resources optimization and promotion web. In the final section, I described the means to apply optimization and promotion web site life cycle and processes associated with it, which I have described and illustrated in the first part of the work.

This thesis defines search engine optimization (SEO) and search engine marketing (SEM) issues. Thesis is divided into several parts which are closely connected to each other. First part of the thesis regards general formulas and terms definitions. In the second part the development on the field of SEO in last two years with accent of main changes which have happened till now is described. A market development in full-text browsers area and a search engine marketing development (where internet is perceived as a marketing instrument) in Czech Republic during years 2004 -- 2009 are also mentioned here. Third part shows opportunities of SEM including the most popular applications description, such as Sklik, AdWords or Etarget, social networks or catalogues. Fourth part concerns web pages analysis and data evaluation, let us say the ways how to analyze and evaluate these pages. Last part of my thesis consists of a practical review of methods and processes, which are described in previous parts of the thesis, with using shoes e-shop example. Here the whole process from opening analysis through keywords analysis till source codes editing and obtaining of external links by web catalogues are described. In addition to the optimization process is part of this thesis also chapter which describes the launch of advertising systems such as Sklik, AdWords and Etarget including evaluation of results and success of particular advertising campaigns realized through these systems. The conclusion of the practical section summarizes the benefits and knowledge that have been achieved by optimizing and which are applicable to other similar projects, which appear across all web in huge numbers. Potential reader of this thesis gets an overview of the current market state concerning full-text browsers in the Czech Republic and search engine marketing. The reader also discovers SEO changes which happened in last two years. Based on mentioned practical part of the thesis the reader should be able to apply basic knowledge in this area, including the basic PPC settings and including analysis of results and their evaluation.

This diploma thesis focuses on Internet marketing of a tradesman. The theoretical part consisting of the first four chapters introduces Internet marketing and its tools, provides details about search engine optimization (SEO), search engine marketing (SEM) and Google Analytics - tool used to analyze website traffic. The final chapter focuses on Internet marketing of Mr. Škoch, a roofer from Lubná. The thesis analyzes his original website and strategy and then describes the process of creation of a new website, its optimization, creation of paid campaign and a Facebook page. Both websites and strategies are evaluated at the end of the chapter, recommendations are introduced and a list of steps for realization of Internet marketing is compiled. The aim of this thesis is to compile a summary of optimal Internet marketing tools universally applicable especially for tradesmen.