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» On LR(k)-Parsers of Polynomial Size
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ALT
1995
Springer
15 years 9 months ago
Learning Unions of Tree Patterns Using Queries
This paper characterizes the polynomial time learnability of TPk, the class of collections of at most k rst-order terms. A collection in TPk de nes the union of the languages de n...
Hiroki Arimura, Hiroki Ishizaka, Takeshi Shinohara
IANDC
2010
68views more  IANDC 2010»
15 years 4 months ago
On the complexity of checking semantic equivalences between pushdown processes and finite-state processes
Simulation preorder/equivalence and bisimulation equivalence are the most commonly used equivalences in concurrency theory. Their standard definitions are often called strong sim...
Antonín Kucera, Richard Mayr

Publication
173views
17 years 4 months ago
A Comparison of Hashing Schemes for Address Lookup in Computer Networks
Using a trace of address references, we compared the efficiency of several different hashing functions, such as cyclic redundancy checking (CRC) polynomials, Fletcher checksum, fol...
R. Jain
COMPGEOM
2008
ACM
15 years 8 months ago
A simple and efficient kinetic spanner
We present a kinetic data structure for maintaining a (1+ )-spanner of size O(n/2 ) for a set of n moving points in the plane. Assuming the trajectories of the points can be descr...
Mohammad Ali Abam, Mark de Berg, Joachim Gudmundss...
DLT
2010
15 years 7 months ago
On a Powerful Class of Non-universal P Systems with Active Membranes
Abstract. We prove that uniform and semi-uniform families of P systems with active membranes using only communication and nonelementary division rules are not computationally unive...
Antonio E. Porreca, Alberto Leporati, Claudio Zand...