My Ph.D. thesis focuses on the design of economic mechanisms inspired by sponsored search auctions to support new generation search engines. These engines (called integrators) are based on multi-domain queries and on the federation of multiple domain-specific search engines. The problem studied in my thesis is essentially a mechanism design problem where two levels are present: in the first, th...

Clustering Web Documents: A Phrase-Based Method for Grouping Search Engine Results

The User-over-Ranking hypothesis states that rather the user herself than a web search engine’s ranking algorithm can help to improve retrieval performance. The means are longer queries that provide additional keywords. Readers who take this hypothesis for granted should recall the fact that virtually no user and none of the search index providers consider its implications. For readers who feel...

Dallas Knight*, Alec Holt and Jim Warren

Among the search tools currently on the Web, search engines are the most well known thanks to the popularity of major search engines such as Google and Yahoo!. While extremely successful, these major search engines do have serious limitations. This book introduces large-scale metasearch engine technology, which has the potential to overcome the limitations of the major search engines. Essential...

The rapid growth of web has resulted in vast volume of information. Information availability at a rapid speed to the user is vital. English language (or any for that matter) has lot of ambiguity in the usage of words. So there is no guarantee that a keyword based search engine will provide the required results. This paper introduces the use of dictionary (standardised) to obtain the context wit...

The images retrieved from conventional Web search engines are not normally well organized in a conceptually meaningful way. Users find it difficult to reformulate effective queries through browsing the retrieved images. This paper presents an approach that organizes the retrieved images with relevant concepts, which are generated automatically from a concept pool obtained from various online re...

Image search is becoming an urgent problem of the next generation of search engine. We firstly review the developed situation of image search engine in this paper. Then, the main difficulty and key technologies about this engine are analyzed. Next, the design method is elaborated in detail, which mainly includes image recognition, perceptual hash algorithm, system solution, image retrieval proc...

Building a search engine that can scale to billions of documents while satisfying the needs of the users presents serious challenges. Few successful stories have been reported so far [36]. Here, we report our experience in building YouSeer, a complete open source search engine tool that includes both an open source crawler and an open source indexer. Our approach takes other open source compone...