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SEMWEB
2007
Springer
15 years 7 months ago
How Useful Are Natural Language Interfaces to the Semantic Web for Casual End-Users?
Natural language interfaces offer end-users a familiar and convenient option for querying ontology-based knowledge bases. Several studies have shown that they can achieve high ret...
Esther Kaufmann, Abraham Bernstein
AAAI
2010
15 years 3 months ago
How Incomplete Is Your Semantic Web Reasoner?
Conjunctive query answering is a key reasoning service for many ontology-based applications. In order to improve scalability, many Semantic Web query answering systems give up com...
Giorgos Stoilos, Bernardo Cuenca Grau, Ian Horrock...
SSDBM
2006
IEEE
153views Database» more  SSDBM 2006»
15 years 7 months ago
HDF5-FastQuery: Accelerating Complex Queries on HDF Datasets using Fast Bitmap Indices
Large scale scientific data is often stored in scientific data formats such as FITS, netCDF and HDF. These storage formats are of particular interest to the scientific user com...
Luke J. Gosink, John Shalf, Kurt Stockinger, Keshe...
ECIR
2008
Springer
15 years 3 months ago
Using Coherence-Based Measures to Predict Query Difficulty
Abstract. We investigate the potential of coherence-based scores to predict query difficulty. The coherence of a document set associated with each query word is used to capture the...
Jiyin He, Martha Larson, Maarten de Rijke
KDD
1994
ACM
98views Data Mining» more  KDD 1994»
15 years 5 months ago
Rule Induction for Semantic Query Optimization
Semantic query optimization can dramatically speed up database query answering by knowledge intensive reformulation. But the problem of how to learn required semantic rules has no...
Chun-Nan Hsu, Craig A. Knoblock