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- posterOctober 2012
Survival analysis for freshness in microblogging search
CIKM '12: Proceedings of the 21st ACM international conference on Information and knowledge managementPages 2483–2486https://doi.org/10.1145/2396761.2398672Freshness of information in real-time search is central in social networks, news, blogs and micro-blogs. Nevertheless, there is not a clear experimental evidence that shows what principled approach effectively combines time and content.
We introduce a ...
- posterJuly 2010
Learning to select rankers
SIGIR '10: Proceedings of the 33rd international ACM SIGIR conference on Research and development in information retrievalPages 855–856https://doi.org/10.1145/1835449.1835650Combining evidence from multiple retrieval models has been widely studied in the context of of distributed search, metasearch and rank fusion. Much of the prior work has focused on combining retrieval scores (or the rankings) assigned by different ...
- research-articleJuly 2010
Exploring reductions for long web queries
SIGIR '10: Proceedings of the 33rd international ACM SIGIR conference on Research and development in information retrievalPages 571–578https://doi.org/10.1145/1835449.1835545Long queries form a difficult, but increasingly important segment for web search engines. Query reduction, a technique for dropping unnecessary query terms from long queries, improves performance of ad-hoc retrieval on TREC collections. Also, it has ...