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In recent years, researchers have investigated search result diversification through a variety of approaches. In such situations, information retrieval systems need to consider both aspects of relevance and diversity for those retrieved documents. On the other hand, previous research has demonstrated that data fusion is useful for improving performance when we are only concerned with relevance. However, it is not clear if it helps when both relevance and diversity are both taken intodoi:10.1145/2600428.2609451 dblp:conf/sigir/WuH14 fatcat:yhze4v3uxbbzdfbr4xucoum6gq