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Despite the continuous efforts to improve the web search quality, a non-negligible fraction of user queries end up with very few or even no matching results in leading web search engines. In this work, we provide a detailed characterization of such queries based on an analysis of a real-life query log. Our experimental setup allows us to characterize the queries with few/no results and compare the mechanisms employed by the major search engines in handling them.doi:10.1145/2396761.2398560 dblp:conf/cikm/AltingovdeBCOSU12 fatcat:pi7ftr6omfbpjjftbnu32pltpe