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97
Resource Control for Synchronous Cooperative Threads
 In CONCUR, volume 3170 of LNCS
, 2004
"... We develop new methods to statically bound the resources needed for the execution of systems of concurrent, interactive threads. ..."
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Cited by 34 (4 self)
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We develop new methods to statically bound the resources needed for the execution of systems of concurrent, interactive threads.
Homeomorphic embedding for online termination of symbolic methods
 In The essence of computation, volume 2566 of LNCS
, 2002
"... Abstract. Wellquasi orders in general, and homeomorphic embedding in particular, have gained popularity to ensure the termination of techniques for program analysis, specialisation, transformation, and verification. In this paper we survey and discuss this use of homeomorphic embedding and clarify ..."
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Cited by 28 (5 self)
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Abstract. Wellquasi orders in general, and homeomorphic embedding in particular, have gained popularity to ensure the termination of techniques for program analysis, specialisation, transformation, and verification. In this paper we survey and discuss this use of homeomorphic embedding and clarify the advantages of such an approach over one using wellfounded orders. We also discuss various extensions of the homeomorphic embedding relation. We conclude with a study of homeomorphic embedding in the context of metaprogramming, presenting some new (positive and negative) results and open problems.
Efficient First Order Functional Program Interpreter With Time Bound Certifications
, 2000
"... We demonstrate that the class of rst order functional programs over lists which terminate by multiset path ordering and admit a polynomial quasiinterpretation, is exactly the class of function computable in polynomial time. The interest of this result lies (i) on the simplicity of the conditions on ..."
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Cited by 25 (10 self)
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We demonstrate that the class of rst order functional programs over lists which terminate by multiset path ordering and admit a polynomial quasiinterpretation, is exactly the class of function computable in polynomial time. The interest of this result lies (i) on the simplicity of the conditions on programs to certify their complexity, (ii) on the fact that an important class of natural programs is captured, (iii) and on potential applications on program optimizations. 1 Introduction This paper is part of a general investigation on the implicit complexity of a specication. To illustrate what we mean, we write below the recursive rules that computes the longest common subsequences of two words. More precisely, given two strings u = u1 um and v = v1 vn of f0; 1g , a common subsequence of length k is dened by two sequences of indices i 1 < < i k and j1 < < jk satisfying u i q = v j q . lcs(; y) ! 0 lcs(x; ) ! 0 lcs(i(x); i(y)) ! lcs(x; y) + 1 lcs(i(...
The Expressive Power of Higherorder Types or, Life without CONS
, 2001
"... Compare firstorder functional programs with higherorder programs allowing functions as function parameters. Can the the first program class solve fewer problems than the second? The answer is no: both classes are Turing complete, meaning that they can compute all partial recursive functions. In pa ..."
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Cited by 24 (1 self)
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Compare firstorder functional programs with higherorder programs allowing functions as function parameters. Can the the first program class solve fewer problems than the second? The answer is no: both classes are Turing complete, meaning that they can compute all partial recursive functions. In particular, higherorder values may be firstorder simulated by use of the list constructor ‘cons’ to build function closures. This paper uses complexity theory to prove some expressivity results about small programming languages that are less than Turing complete. Complexity classes of decision problems are used to characterize the expressive power of functional programming language features. An example: secondorder programs are more powerful than firstorder, since a function f of type &lsqb;Bool&rsqb;〉Bool is computable by a consfree firstorder functional program if and only if f is in PTIME, whereas f is computable by a consfree secondorder program if and only if f is in EXPTIME. Exact characterizations are given for those problems of type &lsqb;Bool&rsqb;〉Bool solvable by programs with several combinations of operations on data: presence or absence of constructors; the order of data values: 0, 1, or higher; and program control structures: general recursion, tail recursion, primitive recursion.
A Functional Scenario for Bytecode Verification of Resource Bounds
 In Jerzy Marcinkowski and Andrzej Tarlecki, editors, Computer Science Logic, 18th International Workshop, CSL 13th Annual Conference of the EACSL, Karpacz
, 2004
"... We consider a scenario where (functional) programs in precompiled form are exchanged among untrusted parties. Our contribution is a system of annotations for the code that can be verified at load time so as to ensure bounds on the time and space resources required for its execution, as well as t ..."
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Cited by 21 (3 self)
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We consider a scenario where (functional) programs in precompiled form are exchanged among untrusted parties. Our contribution is a system of annotations for the code that can be verified at load time so as to ensure bounds on the time and space resources required for its execution, as well as to guarantee the usual integrity properties.
Soft lambdacalculus: a language for polynomial time computation
 In Proc. FoSSaCS, Springer LNCS 2987
, 2004
"... Abstract. Soft linear logic ([Lafont02]) is a subsystem of linear logic characterizing the class PTIME. We introduce Soft lambdacalculus as a calculus typable in the intuitionistic and affine variant of this logic. We prove that the (untyped) terms of this calculus are reducible in polynomial time. ..."
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Cited by 20 (2 self)
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Abstract. Soft linear logic ([Lafont02]) is a subsystem of linear logic characterizing the class PTIME. We introduce Soft lambdacalculus as a calculus typable in the intuitionistic and affine variant of this logic. We prove that the (untyped) terms of this calculus are reducible in polynomial time. We then extend the type system of Soft logic with recursive types. This allows us to consider nonstandard types for representing lists. Using these datatypes we examine the concrete expressiveness of Soft lambdacalculus with the example of the insertion sort algorithm. 1
From Interpreter to Logic Engine by Defunctionalization
, 2004
"... Starting from a continuationbased interpreter for a simple logic programming language, propositional Prolog with cut, we derive the corresponding logic engine in the form of an abstract machine. The derivation originates in previous work (our article at PPDP 2003) where it was applied to the la ..."
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Cited by 19 (12 self)
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Starting from a continuationbased interpreter for a simple logic programming language, propositional Prolog with cut, we derive the corresponding logic engine in the form of an abstract machine. The derivation originates in previous work (our article at PPDP 2003) where it was applied to the lambdacalculus. The key transformation here is Reynolds's defunctionalization that transforms a tailrecursive, continuationpassing interpreter into a transition system, i.e., an abstract machine. Similar denotational and operational semantics were studied by de Bruin and de Vink (their article at TAPSOFT 1989), and we compare their study with our derivation. Additionally, we present a directstyle interpreter of propositional Prolog expressed with control operators for delimited continuations.
Analysing the Implicit Complexity of Programs
, 2000
"... We construct a termination ordering, called light multiset path ordering (LMPO), which is a restriction of the multiset path ordering. We establish that the class of programs based on rewriting rules on lists which is terminating by LMPO, characterises exactly the functions computable in polynomial ..."
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Cited by 16 (7 self)
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We construct a termination ordering, called light multiset path ordering (LMPO), which is a restriction of the multiset path ordering. We establish that the class of programs based on rewriting rules on lists which is terminating by LMPO, characterises exactly the functions computable in polynomial time.
Open problems in computer virology
 Journal in Computer Virology
, 2006
"... Abstract. In this article, we briefly review some of the most important open problems in computer virology, in three different areas: theoretical computer virology, virus propagation modeling and antiviral techniques. For each area, we briefly describe the open problems, we review the state of the a ..."
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Cited by 14 (0 self)
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Abstract. In this article, we briefly review some of the most important open problems in computer virology, in three different areas: theoretical computer virology, virus propagation modeling and antiviral techniques. For each area, we briefly describe the open problems, we review the state of the art, and propose promising research directions. 1
On abstract computer virology from a recursion theoretic perspective
 Journal in Computer Virology
, 2006
"... ..."