Sciweavers

2150 search results - page 83 / 430
» On a restricted cross-intersection problem
Sort
View
SIGMOD
2010
ACM
154views Database» more  SIGMOD 2010»
15 years 4 months ago
Unbiased estimation of size and other aggregates over hidden web databases
Many websites provide restrictive form-like interfaces which allow users to execute search queries on the underlying hidden databases. In this paper, we consider the problem of es...
Arjun Dasgupta, Xin Jin, Bradley Jewell, Nan Zhang...
SEMWEB
2010
Springer
15 years 2 months ago
Integrated Metamodeling and Diagnosis in OWL 2
Ontological metamodeling has a variety of applications yet only very restricted forms are supported by OWL 2 directly. We propose a novel encoding scheme enabling class-based metam...
Birte Glimm, Sebastian Rudolph, Johanna Völke...
ICML
2008
IEEE
16 years 5 months ago
A decoupled approach to exemplar-based unsupervised learning
A recent trend in exemplar based unsupervised learning is to formulate the learning problem as a convex optimization problem. Convexity is achieved by restricting the set of possi...
Gökhan H. Bakir, Sebastian Nowozin
DEXA
2007
Springer
131views Database» more  DEXA 2007»
15 years 10 months ago
Improving Semantic Query Answering
The retrieval problem is one of the main reasoning tasks for knowledge base systems. Given a knowledge base K and a concept C, the retrieval problem consists of finding all indivi...
Norbert Kottmann, Thomas Studer
PPSN
2004
Springer
15 years 9 months ago
Hierarchical Genetic Algorithms
Current Genetic Algorithms can efficiently address order-k separable problems, in which the order of the linkage is restricted to a low value k. Outside this class, there exist hie...
Edwin D. de Jong, Dirk Thierens, Richard A. Watson