483 search results - page 80 / 97 » Model Based Deduction for Database Schema Reasoning |
GIS
2005
ACM
14 years 8 months ago
2005
ACM
Topological predicates, as derived from the 9-intersection model, have been widely recognized in GIS, spatial database systems, and many other geo-related disciplines. They are ba...
GIS
2010
ACM
13 years 6 months ago
2010
ACM
In this paper, we aim to estimate the similarity between users according to their GPS trajectories. Our approach first models a user’s GPS trajectories with a semantic location ...
SIGMOD
1996
ACM
13 years 11 months ago
1996
ACM
Magic sets rewriting is a well-known optimization heuristic for complex decision-support queries. There can be many variants of this rewriting even for a single query, which diffe...
DMIN
2006
13 years 9 months ago
2006
are proposing a model to help organizations detect and prevent cheats in online assessments. First we analyze different student personalities, stress situations generated by onlin...
VLDB
2007
ACM
14 years 8 months ago
2007
ACM
Scientific data are posing new challenges to data management due to the large volume, complexity and heterogeneity of the data. Meanwhile, scientific collaboration becomes increas...