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SDB
1995
178views Database» more  SDB 1995»
15 years 4 months ago
A Semantics-based Approach to Design of Query Languages for Partial Information
Most of work on partial information in databases asks which operations of standard languages, like relational algebra, can still be performed correctly in the presence of nulls. In...
Leonid Libkin
MUC
1991
15 years 4 months ago
University of Massachusetts: description of the CIRCUS system as used for MUC-3
ind this work was to extract a relatively abstract level of information from each sentence , using only a limited vocabulary that was hand-crafted to handle a restricted set of tar...
Wendy G. Lehnert, Claire Cardie, David Fisher, Ell...
CHI
2008
ACM
15 years 2 months ago
Cross-channel mobile social software: an empirical study
In this paper, we introduce a prototype system designed to support mobile group socializing that has been appropriated for everyday use by 150 users over 18 months. The system sup...
Clint Heyer, Margot Brereton, Stephen Viller
ESWS
2008
Springer
15 years 2 months ago
Rabbit: Developing a Control Natural Language for Authoring Ontologies
: The mathematical nature of description logics has meant that domain experts find them hard to understand. This forms a significant impediment to the creation and adoption of onto...
Glen Hart, Martina Johnson, Catherine Dolbear
DGO
2008
131views Education» more  DGO 2008»
15 years 2 months ago
A domain-specific language for urban simulation variables
UrbanSim is a modeling system for simulating the development of urban regions over periods of 20-30 years. Its purpose is to help evaluate alternative proposed policies and transp...
Alan Borning, Hana Sevcikova, Paul Waddell