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CSFW
2007
IEEE
13 years 11 months ago
Approximated Computationally Bounded Simulation Relations for Probabilistic Automata
We study simulation relations for Probabilistic Automata that require transitions to be matched up to negligible sets provided that computation lengths are polynomially bounded. T...
Roberto Segala, Andrea Turrini
CONCUR
2010
Springer
13 years 5 months ago
Conditional Automata: A Tool for Safe Removal of Negligible Events
Abstract. Polynomially accurate simulations [19] are relations for Probabilistic Automata that require transitions to be matched up to negligible sets provided that computation len...
Roberto Segala, Andrea Turrini
QEST
2008
IEEE
13 years 11 months ago
Quasi-Birth-Death Processes, Tree-Like QBDs, Probabilistic 1-Counter Automata, and Pushdown Systems
We begin by observing that (discrete-time) QuasiBirth-Death Processes (QBDs) are equivalent, in a precise sense, to (discrete-time) probabilistic 1-Counter Automata (p1CAs), and b...
Kousha Etessami, Dominik Wojtczak, Mihalis Yannaka...
CORR
2008
Springer
89views Education» more  CORR 2008»
13 years 4 months ago
Flow Faster: Efficient Decision Algorithms for Probabilistic Simulations
Strong and weak simulation relations have been proposed for Markov chains, while strong simulation and strong probabilistic simulation relations have been proposed for probabilisti...
Lijun Zhang, Holger Hermanns, Friedrich Eisenbrand...
ENTCS
2007
85views more  ENTCS 2007»
13 years 4 months ago
Proving Approximate Implementations for Probabilistic I/O Automata
In this paper we introduce the notion of approximate implementations for Probabilistic I/O Automata (PIOA) and develop methods for proving such relationships. We employ a task str...
Sayan Mitra, Nancy A. Lynch