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OPODIS
2010
13 years 3 months ago
Signature-Free Broadcast-Based Intrusion Tolerance: Never Decide a Byzantine Value
: Provide application processes with strong agreement guarantees despite failures is a fundamental problem of fault-tolerant distributed computing. Correct processes have not to be...
Achour Mostéfaoui, Michel Raynal
IJCAI
1993
13 years 6 months ago
A Tractable Class of Abduction Problems
literal: Let p be a proposition. Then p and -p are literals. clause: A clause is a disjunction of literals. Horn Clause: A Horn Clause is a clause in which there is at most one po...
Kave Eshghi
RTA
1998
Springer
13 years 9 months ago
Decidable and Undecidable Second-Order Unification Problems
There is a close relationship between word unification and second-order unification. This similarity has been exploited for instance for proving decidability of monadic second-orde...
Jordi Levy
MFCS
2009
Springer
13 years 12 months ago
On Pebble Automata for Data Languages with Decidable Emptiness Problem
In this paper we study a subclass of pebble automata (PA) for data languages for which the emptiness problem is decidable. Namely, we show that the emptiness problem for weak 2-peb...
Tony Tan
CSL
2009
Springer
13 years 12 months ago
Decidable Relationships between Consistency Notions for Constraint Satisfaction Problems
Abstract. We define an abstract pebble game that provides game interpretations for essentially all known consistency algorithms for constraint satisfaction problems including arc-...
Albert Atserias, Mark Weyer