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LICS
2008
IEEE
13 years 11 months ago
Collapsible Pushdown Automata and Recursion Schemes
Collapsible pushdown automata (CPDA) are a new kind of higher-order pushdown automata in which every symbol in the stack has a link to a stack situated somewhere below it. In addi...
Matthew Hague, Andrzej S. Murawski, C.-H. Luke Ong...
WADT
1998
Springer
13 years 9 months ago
Complete Strategies for Term Graph Narrowing
Abstract. Narrowing is a method for solving equations in the equational theories of term rewriting systems. Unification and rewriting, the central operations in narrowing, are ofte...
Annegret Habel, Detlef Plump
STOC
2010
ACM
224views Algorithms» more  STOC 2010»
13 years 8 months ago
Satisfiability Allows No Nontrivial Sparsification Unless The Polynomial-Time Hierarchy Collapses
Consider the following two-player communication process to decide a language L: The first player holds the entire input x but is polynomially bounded; the second player is computa...
Holger Dell and Dieter van Melkebeek
MFCS
2009
Springer
13 years 11 months ago
FO Model Checking on Nested Pushdown Trees
Nested Pushdown Trees are unfoldings of pushdown graphs with an additional jump-relation. These graphs are closely related to collapsible pushdown graphs. They enjoy decidable µ-c...
Alexander Kartzow
PKDD
2009
Springer
175views Data Mining» more  PKDD 2009»
13 years 11 months ago
Latent Dirichlet Bayesian Co-Clustering
Co-clustering has emerged as an important technique for mining contingency data matrices. However, almost all existing coclustering algorithms are hard partitioning, assigning each...
Pu Wang, Carlotta Domeniconi, Kathryn B. Laskey