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» Algorithms for Categorical Equivalence
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EDBT
2004
ACM
155views Database» more  EDBT 2004»
16 years 6 months ago
Processing Unions of Conjunctive Queries with Negation under Limited Access Patterns
We study the problem of answering queries over sources with limited access patterns. The problem is to decide whether a given query Q is feasible, i.e., equivalent to an executable...
Alan Nash, Bertram Ludäscher
CIAC
2010
Springer
376views Algorithms» more  CIAC 2010»
16 years 3 months ago
Kernelization for Maximum Leaf Spanning Tree with Positive Vertex Weights
In this paper we consider a natural generalization of the well-known Max Leaf Spanning Tree problem. In the generalized Weighted Max Leaf problem we get as input an undirected co...
Bart Jansen
ALT
2006
Springer
16 years 3 months ago
Probabilistic Generalization of Simple Grammars and Its Application to Reinforcement Learning
Abstract. Recently, some non-regular subclasses of context-free grammars have been found to be efficiently learnable from positive data. In order to use these efficient algorithms ...
Takeshi Shibata, Ryo Yoshinaka, Takashi Chikayama
ICCAD
2005
IEEE
128views Hardware» more  ICCAD 2005»
16 years 3 months ago
Reducing structural bias in technology mapping
Technology mapping based on DAG-covering suffers from the problem of structural bias: the structure of the mapped netlist depends strongly on the subject graph. In this paper we ...
Satrajit Chatterjee, Alan Mishchenko, Robert K. Br...
WIA
2009
Springer
16 years 1 months ago
Short Regular Expressions from Finite Automata: Empirical Results
We continue our work [H. Gruber, M. Holzer: Provably shorter regular expressions from deterministic finite automata (extended ). In Proc. DLT, LNCS 5257, 2008] on the problem of ...
Hermann Gruber, Markus Holzer, Michael Tautschnig