Information systems, search, information retrieval. Evaluating the retrieval effectiveness of web search engines using a representative query sample dirk lewandowski hamburg university of applied sciences, department of information, finkenau 35, d22081 hamburg, germany dirk. View the profiles of people named dirk lewandowski. Web search engine research by lewandowski, dirk ebook.
Therefore, 38 websites that are updated on a daily basis were analysed within a timespan of six weeks. Dirk lewandowski is a professor of information research and information retrieval at the hamburg university of applied sciences, germany. Heinrich heine university dusseldorf, 2005, isbn 3925474552, pp. He is the editor of aslib journal of information management formerly. Centrix group, new zealand publishes report on impact o. Evaluating the retrieval effectiveness of web search. His work has been published in some of the leading information science journals, including jasist, journal of information. The text retrieval conference trec is a series of workshops designed to advance the stateoftheart in information retrieval by providing the infrastructure necessary for. Pdf web search engine research by dirk lewandowski free downlaod publisher.
Ranking factors are divided into querydependent and queryindependent factors, the latter of which have become more and more important within recent years. This study measures the frequency with which search engines update their indices. Join facebook to connect with dirk lewandowski and others you may know. A framework for designing retrieval effectiveness studies. A framework for evaluating the retrieval effectiveness of. The book explores a range of topics including retrieval effectiveness, user satisfaction, the evaluation of search interfaces, the impact of search on society, reliability of search results, query log analysis, user guidance. The second part of the article gives an overview of the research literature published within the last two years. Aslib proceedings, a isiranked information science journal. While some questions are the same as in classic information retrieval, there are new questions concerning characteristics of the web,which are discussed. Search engine retrieval effectiveness studies are usually small scale, using only limited query samples. Facebook gives people the power to share and makes the world more open and connected. Dirk has published extensively in the areas of web information retrieval, search engine user behaviour and the role that search engines play in society.