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ICML
1996
IEEE
14 years 11 months ago
On the Learnability of the Uncomputable
Within Valiant'smodel of learning as formalized by Kearns, we show that computable total predicates for two formallyuncomputable problems the classical Halting Problem, and t...
Richard H. Lathrop
ICDT
2010
ACM
180views Database» more  ICDT 2010»
14 years 7 months ago
Foundations of SPARQL Query Optimization
We study fundamental aspects related to the efficient processing of the SPARQL query language for RDF, proposed by the W3C to encode machine-readable information in the Semantic W...
Michael Schmidt, Michael Meier, Georg Lausen
ALT
2005
Springer
14 years 7 months ago
Teaching Learners with Restricted Mind Changes
Within learning theory teaching has been studied in various ways. In a common variant the teacher has to teach all learners that are restricted to output only consistent hypotheses...
Frank J. Balbach, Thomas Zeugmann
LPNMR
2009
Springer
14 years 4 months ago
A Default Approach to Semantics of Logic Programs with Constraint Atoms
We define the semantics of logic programs with (abstract) constraint atoms in a way closely tied to default logic. Like default logic, formulas in rules are evaluated using the cl...
Yi-Dong Shen, Jia-Huai You
SAT
2009
Springer
109views Hardware» more  SAT 2009»
14 years 4 months ago
A Compact Representation for Syntactic Dependencies in QBFs
Different quantifier types in Quantified Boolean Formulae (QBF) introduce variable dependencies which have to be taken into consideration when deciding satisfiability of a QBF....
Florian Lonsing, Armin Biere