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Whole genome sequencing and resequencing provide insight into the genetic structure of wild Ophiocordyceps sinensis. [PDF]

BMC Genomics
Rao Z, Han R, Sun T, Li M, Wang Y, Xu J, Li Z, Cao L.   +7 more
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Social semantic query expansion

ACM Transactions on Intelligent Systems and Technology, 2013
Weak semantic techniques rely on the integration of Semantic Web techniques with social annotations and aim to embrace the strengths of both. In this article, we propose a novel weak semantic technique for query expansion. Traditional query expansion techniques are based on the computation of two-dimensional co-occurrence matrices.
BIANCALANA, CLAUDIO, GASPARETTI, FABIO, MICARELLI, Alessandro, SANSONETTI, GIUSEPPE   +3 more
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Query expansion using associated queries

Proceedings of the twelfth international conference on Information and knowledge management - CIKM '03, 2003
Hundreds of millions of users each day use web search engines to meet their information needs. Advances in web search effectiveness are therefore perhaps the most significant public outcomes of IR research. Query expansion is one such method for improving the effectiveness of ranked retrieval by adding additional terms to a query.
Bodo Billerbeck, Falk Scholer, Hugh E. Williams, Justin Zobel   +3 more
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Probabilistic query expansion using query logs

Proceedings of the eleventh international conference on World Wide Web - WWW '02, 2002
Query expansion has long been suggested as an effective way to resolve the short query and word mismatching problems. A number of query expansion methods have been proposed in traditional information retrieval. However, these previous methods do not take into account the specific characteristics of web searching; in particular, of the availability of ...
Hang Cui, Ji-Rong Wen, Jian-Yun Nie, Wei-Ying Ma   +3 more
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Refining Query Expansion Terms using Query Context

Proceedings of the 23rd Australasian Document Computing Symposium, 2018
Query expansion is commonly used to combat the vocabulary mismatch problem, it bridges the disparity between the vocabulary used in the corpus and search queries. However, if expansion terms are not chosen carefully, there is a risk of including spurious expansion terms, which can broaden the potential interpretations of the modified query ...
Reuben Crimp, Andrew Trotman
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Query-drift prevention for robust query expansion

Proceedings of the 31st annual international ACM SIGIR conference on Research and development in information retrieval, 2008
Pseudo-feedback-based automatic query expansion yields effective retrieval performance on average, but results in performance inferior to that of using the original query for many information needs. We address an important cause of this robustness issue, namely, the query drift problem, by fusing the results retrieved in response to the original query ...
Liron Zighelnic, Oren Kurland
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Towards Interactive Query Expansion

ACM SIGIR Forum, 1988
In an era of online retrieval, it is appropriate to offer guidance to users wishing to improve their initial queries. One form of such guidance could be short lists of suggested terms gathered from feedback, nearest neighbors, and term variants of original query terms.
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Effective Multi-Query Expansions

Proceedings of the 23rd ACM international conference on Multimedia, 2015
Given a query photo issued by a user (q-user), the landmark retrieval is to return a set of photos with their landmarks similar to those of the query, while the existing studies on the landmark retrieval focus on exploiting geometries of landmarks for similarity matches between candidate photos and a query photo.
Yang Wang, Xuemin Lin, Lin Wu, Wenjie Zhang   +3 more
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Towards robust query expansion

Proceedings of the 30th annual international ACM SIGIR conference on Research and development in information retrieval, 2007
We propose a language-model-based approach for addressing the performance robustness problem -- with respect to free-parameters' values -- of pseudo-feedback-based query-expansion methods. Given a query, we create a set of language models representing different forms of its expansion by varying the parameters' values of some expansion method; then, we ...
Mattan Winaver, Oren Kurland, Carmel Domshlak   +2 more
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