835 search results - page 159 / 167 » Exploiting web search engines to search structured databases |
ALENEX
2009
13 years 8 months ago
2009
Minimal perfect hash functions have been shown to be useful to compress data in several data management tasks. In particular, order-preserving minimal perfect hash functions [10] ...
FOCS
1998
IEEE
13 years 12 months ago
1998
IEEE
This paper deals with the evaluation of acyclic Boolean conjunctive queries in relational databases. By well-known results of Yannakakis [1981], this problem is solvable in polynom...
DGO
2003
13 years 9 months ago
2003
Semantic heterogeneity of information is a major barrier of information and system interoperability. Defining ontology of data and mapping ontologies among heterogeneous informati...
ESWS
2008
Springer
13 years 9 months ago
2008
Springer
We present SHIRI-Annot an automatic ontology-driven and unsupervised approach for the semantic annotation of documents which contain well structured parts and not well structured o...
TSD
2007
Springer
14 years 1 months ago
2007
Springer
Sound ontologies need to incorporate source unidentifiable sounds in an adequate and consistent manner. Computational lexical resources like WordNet have either inserted these des...