Novelty and diversity in information retrieval evaluation
Proceedings of the 31st annual international ACM SIGIR conference on Research and development in information retrieval
Exploiting query reformulations for web search result diversification
Proceedings of the 19th international conference on World wide web
Online selection of diverse results
Proceedings of the fifth ACM international conference on Web search and data mining
Learning to rank query suggestions for adhoc and diversity search
Information Retrieval
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Search result diversification has recently gained attention as a means to tackle ambiguous queries. While query ambiguity is of particular concern for the short queries commonly observed in a Web search scenario, it is unclear how much diversity is actually promoted by Web search engines (WSEs). In this paper, we assess the diversification performance of two leading WSEs in the context of the diversity task of the TREC 2009 and 2010 Web tracks. Our results show that these WSEs perform effectively for queries with multiple interpretations, but not for those open to multiple aspects related to a single interpretation. Moreover, by deploying a state-of-the-art diversification approach based on query suggestions from these WSEs themselves, we show that their diversification performance can be further improved.