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HT
1993
ACM
13 years 11 months ago
Designing Dexter-Based Cooperative Hypermedia Systems
This paper discusses issues for the design of a Dexter-based cooperative hypermedia architecture and a specific system, DeVise Hypermedia (DHM), developed from this architecture. ...
Kaj Grønbæk, Jens A. Hem, Ole Lehrman...
SIGMOD
1996
ACM
120views Database» more  SIGMOD 1996»
13 years 11 months ago
Query Execution Techniques for Caching Expensive Methods
Object-Relational and Object-Oriented DBMSs allow users to invoke time-consuming ("expensive") methods in their queries. When queries containing these expensive methods a...
Joseph M. Hellerstein, Jeffrey F. Naughton
ICDT
1995
ACM
79views Database» more  ICDT 1995»
13 years 11 months ago
Optimization Using Tuple Subsumption
A tuple t1 of relation R subsumes tuple t2 of R, with respect to a query Q if for every database, tuple t1 derives all, and possibly more, answers to query Q than derived by tuple ...
Venky Harinarayan, Ashish Gupta
NGITS
1993
Springer
13 years 11 months ago
AMOS - An Architecture for Active Mediators
AMOS (Active Mediators Object System) is an architecture to model, locate, search, combine, update, and monitor data in information systems with many work stations connected using...
Gustav Fahl, Tore Risch, Martin Sköld
INFORMATICALT
2008
124views more  INFORMATICALT 2008»
13 years 7 months ago
Hierarchical Adaptive Clustering
This paper studies an adaptive clustering problem. We focus on re-clustering an object set, previously clustered, when the feature set characterizing the objects increases. We prop...
Gabriela Serban, Alina Campan