204 search results - page 25 / 41 » Containment of Conjunctive Queries with Negation: Algorithms... |
CIKM
2009
Springer
14 years 8 days ago
2009
Springer
Answer typing is commonly thought of as finding appropriate responses to given questions. We extend the notion of answer typing to information retrieval to ensure results contain...
ICDE
1997
IEEE
14 years 10 months ago
1997
IEEE
Query optimization is an integral part of relational database management systems. One important task in query optimization is selectivity estimation, that is, given a query P, we ...
ACMSE
2009
ACM
14 years 3 months ago
2009
ACM
This paper describes a research effort to improve the use of the cosine similarity information retrieval technique to detect unknown, known or variances of known rogue software by...
KDD
2006
ACM
14 years 9 months ago
2006
ACM
Long-term search history contains rich information about a user's search preferences. In this paper, we study statistical language modeling based methods to mine contextual i...
CIKM
2007
Springer
14 years 3 months ago
2007
Springer
Recently, due to its wide applications, subgraph search has attracted a lot of attention from database and data mining community. Sub-graph search is defined as follows: given a ...