Service oriented architectures become more and more popular withthe emergence and consolidation of new paradigms such as Clouds and Grids. In this context scheduling becomes an important and difficult problem as serv...
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Service oriented architectures become more and more popular withthe emergence and consolidation of new paradigms such as Clouds and Grids. In this context scheduling becomes an important and difficult problem as services hide their actual implementation, requirements or efficiency and are spread across multiple institutions and geographical locations. this paper proposes a distributed scheduling approach based on agents where each agent handles a certain domain and manages independently the policies inside it. In its frame several scheduling algorithms are also studied, compared and some results are given.
Generative relations for different equilibria types in finite non cooperative games are proposed. these relations induce appropriate domination concepts. Using an evolutionary technique approximations for different eq...
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Generative relations for different equilibria types in finite non cooperative games are proposed. these relations induce appropriate domination concepts. Using an evolutionary technique approximations for different equilibria are computed. the concept of game is extended in order to allow players to have different types of rationality. the new game allows us to combine different equilibria. numerical experiments indicate the potential of the proposed concepts and technique and offers an inside view of the implication of the rationality in the solution concept.
作者:
Anton S. MuresanDepartment of Statistics
Forecasting and Mathematics Faculty of Economics and Business Administration Babeş-Bolyai University Cluj-Napoca Romania
In this paper we consider a functional-differential equation which appears in price theory and in the dynamics of economical systems. We give some new results about existence, uniqueness and data dependence of the sol...
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In this paper we consider a functional-differential equation which appears in price theory and in the dynamics of economical systems. We give some new results about existence, uniqueness and data dependence of the solution of a problem which appears in conection withthis functional-differential equation. these results are obtained by using Picard operator's technique and an abstract model for the steps method, due to the Professor Ioan A. Rus.
Simulation of quantum computers using classical computers is a computationally hard problem, requiring a huge amount of operations and storage. Grid systems are a good choice for simulating quantum algorithms, since t...
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Simulation of quantum computers using classical computers is a computationally hard problem, requiring a huge amount of operations and storage. Grid systems are a good choice for simulating quantum algorithms, since they provide access to high-performance computer clusters. In this paper we present the design of a message passing parallel version of the quantum computer simulator, QCL, deployed as a grid service. After describing the architecture of our grid service and the parallelization strategy for the general single qubit operator, we present the performance measurements for some test cases, showing the speedups obtained.
the task of the standard Mamdani fuzzy logic controller is to find a crisp control action from the fuzzy rule-base and from a set of crisp inputs. Because the interval inputs are frequently used in various domains (on...
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the task of the standard Mamdani fuzzy logic controller is to find a crisp control action from the fuzzy rule-base and from a set of crisp inputs. Because the interval inputs are frequently used in various domains (online shopping, for instance), in this paper we propose an extension of this type of controller which works with intervals as inputs and with various implication operators. For any implication we obtain a crisp value as output. Finally, these outputs are combined to obtain the overall crisp output action of the system.
A redex in a graph G is a triple r = (u, c, v) of distinct vertices that determine a 2-star. Shrinking r means deleting the center c and merging u with v into one vertex. Reduction of G entails shrinking all of its re...
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A redex in a graph G is a triple r = (u, c, v) of distinct vertices that determine a 2-star. Shrinking r means deleting the center c and merging u with v into one vertex. Reduction of G entails shrinking all of its redexes in a recursive way, and, at the same time, deleting all loops that are created during this process. It is shown that reduction can be implemented in O(m) time, where m is the number of edges in G.
this paper presents a rule-based approach for the phonetic transcription of the Romanian language. We integrate this phonetic analysis in the text processing component of a text-to-speech system for Romanian. Grapheme...
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this paper presents a rule-based approach for the phonetic transcription of the Romanian language. We integrate this phonetic analysis in the text processing component of a text-to-speech system for Romanian. Grapheme-to-phoneme rules are constructed based on expert information from DOOMII dictionary. In the cases when rules are useless, we employed decision trees constructed on engineered training sets to help the classifiers to learn the language exceptions.
Using the framework of formal theory of partial differential equations, we consider a method of computation of the m-Hilbert polynomial (i.e. Hilbert polynomial with multivariable), which generalizes the Seiler9;s ...
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Using the framework of formal theory of partial differential equations, we consider a method of computation of the m-Hilbert polynomial (i.e. Hilbert polynomial with multivariable), which generalizes the Seiler's theorem of Hilbert polynomial with single variable. Next we present an approach to compute the number of arbitrary functions of positive differential order in the general solution, and give a formally well-posed initial problem. Finally,as applications the Maxwell equations and weakly over determined equations are considered.
Disjoint NP-pairs are an interesting model of computation with important applications in cryptography and proof complexity. the question whether there exists a complete disjoint NP-pair was posed by Razborov in 1994 a...
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Disjoint NP-pairs are an interesting model of computation with important applications in cryptography and proof complexity. the question whether there exists a complete disjoint NP-pair was posed by Razborov in 1994 and is one of the most important problems in the field. In this paper we prove that there exists a many-one hard disjoint NP-pair which is computed with access to a very weak oracle (a tally NP-oracle).In addition, we exhibit candidates for complete NP-pairs and apply our results to a recent line of research on the construction of hard tautologies from pseudorandom generators.
Computations with sparse matrices are widespread in scientific projects. Used data format affects strongly the performance. Efficient formats for storing sparse matrices are still under development, since the computat...
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Computations with sparse matrices are widespread in scientific projects. Used data format affects strongly the performance. Efficient formats for storing sparse matrices are still under development, since the computation using widely-used formats (like XY or CSR) is slow and specialized formats (like SPARSITY or CARB) have a large transformation *** this paper, we represent some improvements to the quadtree storage format. We also compare the performance during the execution of some basic routines from the linear algebra using widely-used formats and the quadtree storage format.
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