283 search results - page 30 / 57 » A study of the effect of term proximity on query expansion |
VTC
2006
IEEE
14 years 1 months ago
2006
IEEE
Abstract: In this paper, we study concatenated coding for MIMOOFDM systems. The proposed concatenated system achieves full spatial and frequency diversity at much lower complexity ...
SIGIR
2003
ACM
14 years 28 days ago
2003
ACM
Query length in best-match information retrieval (IR) systems is well known to be positively related to effectiveness in the IR task, when measured in experimental, non-interactiv...
WWW
2007
ACM
14 years 8 months ago
2007
ACM
In this paper, we study a new problem of mining causal relation of queries in search engine query logs. Causal relation between two queries means event on one query is the causati...
WWW
2010
ACM
14 years 2 months ago
2010
ACM
Click data captures many users’ document preferences for a query and has been shown to help significantly improve search engine ranking. However, most click data is noisy and of...
CIKM
2007
Springer
14 years 1 months ago
2007
Springer
We investigate the subtle cues to user identity that may be exploited in attacks on the privacy of users in web search query logs. We study the application of simple classifiers ...