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Computational Sciences and Optimization (CSO), 2011 Fourth International Joint Conference on

Date 15-19 April 2011

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Displaying Results 1 - 25 of 315
  • [Front cover]

    Publication Year: 2011, Page(s): C1
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  • [Title page i]

    Publication Year: 2011, Page(s): i
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  • [Title page iii]

    Publication Year: 2011, Page(s): iii
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  • [Copyright notice]

    Publication Year: 2011, Page(s): iv
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  • Table of contents

    Publication Year: 2011, Page(s):v - xxvii
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  • Message from the General Co-chairs and Program Co-chairs

    Publication Year: 2011, Page(s):xxviii - xxx
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  • Organizing Committee

    Publication Year: 2011, Page(s): xxxi
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  • Program Committees

    Publication Year: 2011, Page(s):xxxii - xxxv
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  • Reviewers

    Publication Year: 2011, Page(s):xxxvi - xxxvii
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  • Exploring Storage Optimizations to Accelerate Parallel Out-of-Core Matrix Product

    Publication Year: 2011, Page(s):1 - 2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (125 KB) | HTML iconHTML

    The separate development between the storage system and scientific application has hidden most of internal implementation strategies of the storage system from the scientific application designers. This would worsen the existing I/O bottleneck problem of most scientific applications to some extent. To address this problem, this study chooses the matrix and its parallel out-of-core product algorith... View full abstract»

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  • Numerical Solution of Telegraphic Equations with Source Term Using the Generalized Trapezoidal Formula

    Publication Year: 2011, Page(s):3 - 6
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (213 KB) | HTML iconHTML

    In this paper, a class of two-level difference schemes including a parameter θ are discussed for the numerical solution of one-dimensional telegraphic equations with source terms, where θ∈[0,1]. The truncation errors of these schemes are O (k2 + h4) if θ ≠ 1/3. For θ = 1/3, the accuracy of the present scheme is improved to O(k... View full abstract»

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  • A Hybrid Model of Rough Sets and Shannon Entropy for Building a Foreign Trade Forecasting System

    Publication Year: 2011, Page(s):7 - 11
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (706 KB) | HTML iconHTML

    Forecasting the volume of foreign trade is important to policy formulation for local governments. This study proposes a machine-learning algorithm as a forecasting tool that is based on Rough sets and Shannon entropy. This study uses historical data from a large municipal to examine the proposed forecasting tool. The results suggest that this tool can be useful in specific trade decisions with uni... View full abstract»

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  • A High-Order Alternating Group Iterative Algorithm

    Publication Year: 2011, Page(s):12 - 15
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (153 KB) | HTML iconHTML

    In this paper, by constructing a new high-order parallel alternating group iterative algorithm, we solve the two point boundary value problem. The main method is to dividing the system of different equations into a set of subsystem which can be solved individually in parallel and four order accurate. We have obtained the main results and given some examples to validate our results in addition. It ... View full abstract»

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  • An Iterative Algorithm for the Least Squares Centrosymmetric Solution of a Matrix Equation

    Publication Year: 2011, Page(s):16 - 20
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (266 KB) | HTML iconHTML

    In this paper, the linear mapping from the constrained solution sets to their independent parameter spaces is constructed, and its properties are studied. Based on these properties and the classical algorithm LSQR for solving the (unconstrained) LS problem, a matrix iterative method that can find the special Centro symmetric solution is proposed. Numerical results are reported that show the effici... View full abstract»

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  • Domain-Knowledge Driven Recommendation Method and Its Application

    Publication Year: 2011, Page(s):21 - 25
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB) | HTML iconHTML

    In order to tackle the problems of current recommendation system, such as lack of domain knowledge and limited applications in e-commerce field, a domain-driven recommendation method based on binary data is proposed in this paper. By introducing the importance of domain knowledge and its application in recommendation, we discuss how to combine domain knowledge with collaborative filtering and appl... View full abstract»

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  • The Extremum of the Frobenius Norm of Matrix

    Publication Year: 2011, Page(s):26 - 28
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (132 KB) | HTML iconHTML

    For two given matrices A and B, the extremum of the Frobenius norm of matrix B-XA is established when X is running all over the unitary matrices. By using the technique of singular value decomposition, the extremum of the Frobenius norm matrix is studied. The result shows that the matrix B-XA has extremum when X is running all over the unitary matrices and in this paper, the bounded of maximum and... View full abstract»

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  • Flexible Contract in Perishable Products Supply Chain with Independent Option

    Publication Year: 2011, Page(s):29 - 33
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (182 KB) | HTML iconHTML

    This paper brings option trading into perishable products supply chain, with high demand uncertainties, long production lead-times and short selling period, and explores the application of independent option in flexible contract. Based on these, it develops a two-stage contract with independent option for a single manufacturer and two retailers, analyzes the decision process of retailer and obtain... View full abstract»

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  • Upper Bounds on Eigenvalue Variation

    Publication Year: 2011, Page(s):34 - 36
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (145 KB) | HTML iconHTML

    Let A and à = D1*AD2 be two n × n diagonalizable matrices with eigendecomposition A = XΛX-1 and A = X̃Λ̃X̃-1, where D1, D2, X and X̃ are nonsingular, and Λ = diag(λ1,⋯, λn) and Λ̃ = diag(λ̃1L ⋯... View full abstract»

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  • Two Classes of Conjugate Gradient Methods for Large-Scale Unconstrained Optimization

    Publication Year: 2011, Page(s):37 - 40
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (175 KB) | HTML iconHTML

    Two classes of new nonlinear conjugate gradient methods are proposed in order to avoid the drawbacks of FR and CD. By induction and contradiction, we prove the sufficient descent properties without any line search and the global convergence with the Wolfe line search. The numerical results for 10 classical unconstrained optimization problems respectively indicate that the proposed methods outperfo... View full abstract»

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  • A Trust Region Interior Point Algorithm for Truss Structural Optimization Problems

    Publication Year: 2011, Page(s):41 - 45
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (389 KB) | HTML iconHTML

    The use of optimization in a simulation-based design of automotive, aerospace and consumer products has become a common trend today. Designers are faced with the continuous challenge of reducing manufacturing costs and design cycle times while improving the systems performance and reliability. In practical design, sequential linear programming (SLP) is very popular because of its inherent simplici... View full abstract»

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  • Direct Optimization of Low-Thrust Transfers Using Averaging Techniques Based on Fourier Series Expansion

    Publication Year: 2011, Page(s):46 - 50
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (317 KB) | HTML iconHTML

    Low-thrust transfers in the central gravitational field involve a large number of orbital revolutions, which poses a real challenge to trajectory optimization. This article uses an orbital averaging technique based on Fourier series Expansion to describe the trajectory dynamics: the low-thrust profile is transformed in Fourier space, and secular dynamics equations are represented as functions of t... View full abstract»

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  • Biomimetic Undulatory Robotic Fin Optimization Design Using Computational Fluid Dynamic Method

    Publication Year: 2011, Page(s):51 - 55
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1271 KB) | HTML iconHTML

    In our previous work, an undulating robotic fin is developed, the design of which is inspired by the pectoral fin of stingray. A Computational Fluid Dynamics (CFD) based comparison of optimal thrust and efficiency generation among four typical fin undulating swimming models with different amplitude envelopes as well as the fin morphologic have been discussed independently. Here, we seek to complem... View full abstract»

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  • Price of Anarchy in Transportation Networks with Heterogeneous Agents

    Publication Year: 2011, Page(s):56 - 60
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB) | HTML iconHTML

    This article proposes a model to analyze the transporttion networks with heterogeneous agents, who contribute to congestion differently. This is the generalization of homogeneous model. It turns out that the optimum from social planning is high dependent of the distribution of the driving technique possessed by agents in the networks, both for its mean value and variance. However, the optimum from... View full abstract»

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  • Design of a Flexible, Extensible and Reusable Supply Chain Simulation System

    Publication Year: 2011, Page(s):61 - 65
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (737 KB) | HTML iconHTML

    In order to handle the hypercompetitive and volatile market, an innovative design framework is presented in this paper to make the simulation system flexible, extensible and reusable. The simulation model is divided into three sub-models: the core model defines the basic structure of the simulation scenario, the data model maintains the detailed information of the simulation model, and the runtime... View full abstract»

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  • Phase Retrieval for Hard X-Ray In-line Phase Contrast Imaging Based on a Parallel Hybrid Genetic Algorithm

    Publication Year: 2011, Page(s):66 - 70
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (509 KB) | HTML iconHTML

    A novel phase retrieval method for hard X-ray in-line phase contrast imaging is presented in this paper, which is based on a parallel hybrid genetic algorithm. Different from the tradition numerical algorithm, our approach is a parallel hybrid intelligent method. Some techniques, such as parallel computing, simulated annealing selection and elitist migration, are all combined together with the gen... View full abstract»

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