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JCDL
2006
ACM
71views Education» more  JCDL 2006»
15 years 5 months ago
Using controlled query generation to evaluate blind relevance feedback algorithms
Currently in document retrieval there are many algorithms each with different strengths and weakness. There is some difficulty, however, in evaluating the impact of the test quer...
Chris Jordan, Carolyn R. Watters, Qigang Gao
SIGMOD
2007
ACM
176views Database» more  SIGMOD 2007»
15 years 11 months ago
URank: formulation and efficient evaluation of top-k queries in uncertain databases
Top-k processing in uncertain databases is semantically and computationally different from traditional top-k processing. The interplay between query scores and data uncertainty ma...
Mohamed A. Soliman, Ihab F. Ilyas, Kevin Chen-Chua...
SIGIR
2008
ACM
14 years 9 months ago
ResIn: a combination of results caching and index pruning for high-performance web search engines
Results caching is an efficient technique for reducing the query processing load, hence it is commonly used in real search engines. This technique, however, bounds the maximum hit...
Gleb Skobeltsyn, Flavio Junqueira, Vassilis Placho...
ICIP
2003
IEEE
16 years 24 days ago
Multitemporal geospatial query grouping using correlation signatures
With recent advances in temporal and spatiotemporal databases, user demands are becoming more complex. As a result, simple queries are replaced by complex multitemporal query scen...
Giorgos Mountrakis, Peggy Agouris, Anthony Stefani...
PODS
2009
ACM
134views Database» more  PODS 2009»
15 years 11 months ago
Equivalence of nested queries with mixed semantics
We consider the problem of deciding query equivalence for a conjunctive language in which queries output complex objects composed from a mixture of nested, unordered collection ty...
David DeHaan