Sciweavers

640 search results - page 43 / 128
» Query Optimization Using Multiple SIP Strategies
Sort
View
ICASSP
2009
IEEE
14 years 2 months ago
Spoken dialog strategy based on understanding graph search
We regarded information retrieval as a graph search problem and proposed several novel dialog strategies that can recover from misrecognition through a spoken dialog that traverse...
Yuji Kinoshita, Chiyomi Miyajima, Norihide Kitaoka...
ICDE
2008
IEEE
131views Database» more  ICDE 2008»
15 years 10 days ago
Parallel Evaluation of Composite Aggregate Queries
Aggregate measures summarizing subsets of data are valuable in exploratory analysis and decision support, especially when dependent aggregations can be easily specified and compute...
Lei Chen 0003, Christopher Olston, Raghu Ramakrish...
DLOG
2011
13 years 2 months ago
Query Answering over SROIQ Knowledge Bases with SPARQL
W3C currently extends the SPARQL query language with so-called entailment regimes, which define how queries are evaluated using logical entailment relations. We describe a sound a...
Ilianna Kollia, Birte Glimm, Ian Horrocks
SIGIR
2012
ACM
12 years 1 months ago
Optimizing positional index structures for versioned document collections
Versioned document collections are collections that contain multiple versions of each document. Important examples are Web archives, Wikipedia and other wikis, or source code and ...
Jinru He, Torsten Suel
VLDB
2005
ACM
112views Database» more  VLDB 2005»
14 years 4 months ago
Content-Based Routing: Different Plans for Different Data
Query optimizers in current database systems are designed to pick a single efficient plan for a given query based on current statistical properties of the data. However, different...
Pedro Bizarro, Shivnath Babu, David J. DeWitt, Jen...