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PODS
2008
ACM
170views Database» more  PODS 2008»
14 years 7 months ago
Answering aggregate queries in data exchange
Data exchange, also known as data translation, has been extensively investigated in recent years. One main direction of research has focused on the semantics and the complexity of...
Foto N. Afrati, Phokion G. Kolaitis
NDQA
2003
119views Education» more  NDQA 2003»
13 years 9 months ago
Inference Web: Portable and Sharable Explanations for Question Answering
The World Wide Web lacks support for explaining information provenance. When web applications return results, many users do not know what information sources were used, when they ...
Deborah L. McGuinness, Paulo Pinheiro da Silva
VLDB
2007
ACM
155views Database» more  VLDB 2007»
14 years 8 months ago
Answering Aggregation Queries in a Secure System Model
As more sensitive data is captured in electronic form, security becomes more and more important. Data encryption is the main technique for achieving security. While in the past en...
Tingjian Ge, Stanley B. Zdonik
LPNMR
2007
Springer
14 years 1 months ago
A Common View on Strong, Uniform, and Other Notions of Equivalence in Answer-Set Programming
Logic programming under the answer-set semantics nowadays deals with numerous different notions of equivalence between programs. This is due to the fact that equivalence for substi...
Stefan Woltran
SIGIR
2005
ACM
14 years 1 months ago
Generic soft pattern models for definitional question answering
This paper explores probabilistic lexico-syntactic pattern matching, also known as soft pattern matching. While previous methods in soft pattern matching are ad hoc in computing t...
Hang Cui, Min-Yen Kan, Tat-Seng Chua