609 search results - page 55 / 122 » Collective spatial keyword querying |
CCS
2008
ACM
13 years 10 months ago
2008
ACM
We propose an approach for the selective enforcement of access control restrictions in, possibly distributed, large data collections based on two basic concepts: i) flexible autho...
WEBI
2010
Springer
13 years 6 months ago
2010
Springer
Static index pruning techniques aim at removing from the posting lists of an inverted file the references to documents which are likely to be not relevant for answering user querie...
EDBT
2006
ACM
14 years 9 months ago
2006
ACM
Abstract. We consider a collaboration of peers autonomously crawling the Web. A pivotal issue when designing a peer-to-peer (P2P) Web search engine in this environment is query rou...
CIKM
2005
Springer
14 years 2 months ago
2005
Springer
We examine issues in the design of fully dynamic information retrieval systems with support for instantaneous document insertions and deletions. We present one such system and dis...
SIGIR
2008
ACM
13 years 7 months ago
2008
ACM
Blog/news search engines are very important channels to reach information about the real-time happenings. In this paper, we study the popular queries collected over one year perio...