Now showing items 35-54 of 101

    • The GAMS Callable Program Library for Variational and Complementarity Solvers 

      Preckel, Paul; Ferris, Michael; Dirkse, Steven (1994-07-19)
      The GAMS modeling language has recently been extended to enable the formulation of Mixed Complementarity Problems (MCP). The GAMS Callable Program Library (CPLIB) is a set of Fort ran subroutines developed as an extension ...
    • Generalized Support Vector Machines 

      Mangasarian, Olvi (1998)
      By setting apart the two functions of a support vector machine: separation of points by a nonlinear surface in the original space of patterns, and maximizing the distance between separating planes in a higher dimensional ...
    • Genetic Algorithms as Multi-Coordinators in Large-Scale Optimization 

      Meyer, Robert R.; Martin, Wayne; Christou, Ioannis T. (1996)
      We present high-level, decomposition-based algorithms for large-scale block-angular optimization problems containing integer variables, and demonstrate their effectiveness in the solution of large-scale graph partitioning ...
    • Genetic Algorithms for Combinatorial Optimization: The Assembly Line Balancing Problem 

      Ferris, Michael; Anderson, Edward (1993-01)
      Genetic algorithms are one example of the use of a random element within an algorithm for combinatorial optimization. We consider the application of the genetic algorithm to a particular problem, the Assembly Line Balancing ...
    • Global Optimization Techniques for Mixed Complementarity Problems 

      Kanzow, Christian (1998-07-30)
      We investigates the theoretical and numerical properties of two global optimization techniques for the solution of mixed complementarity problems. More precisely, using a standard semismooth Newton-type method as a basic ...
    • A homotopy method for mixed complementarity problems based on the PATH solver 

      Ralph, D.; Munson, Todd; Ferris, Michael (1999)
      Mixed complementarity problems can be recast as zero finding problems for the normal map, a function that is smooth on the interior o each of the cells of a piecewise linear manifold of IR^n, called normal manifold. We ...
    • Hybrid Misclassification Minimization 

      Olvi, Mangasarian; Chen, Chunhui (1995)
      Given two finite point sets A and B in the n-dimensional real space R^n, we consider the NP-complete problem of minimizing the number of misclassified points by a plane attempting to divide R^n into two halfspaces such ...
    • A Hybrid Newton Method for Solving Box Constrained Variational Inequalitiy Problems Via the D-Gap Function 

      Fukushima, Masao; Kanzow, Christian; Peng, Ji-Ming (1997-12-30)
      A box constrained variational inequality problem can be reformulated as an unconstrained minimization problem through the D-gap function. A hybrid Netwon-type method is proposed for minimizing the D-gap function. Under ...
    • The Ill-Posed Linear Complementarity Problem 

      Mangasarian, Olvi L. (1995)
      A regularization of the linear complementarity problem (LCP) is proposed that leads to an exact solution, if one exists, otherwise a minimizer of a natural residual of the problem is obtained. The regularized LCP (RLCP) ...
    • Improved Generalization via Tolerant Training 

      Mangasarian, O. L.; Street, W. Nick (1996-12-20)
      Theoretical and computational justification is given for improved generalization when the training set is learned with less accuracy. The model used for this investigation is a simple linear one. It is shown that learning ...
    • Individual and Collective Prognostic Prediction 

      Wolberg, W.H.; Mangasarian, O.L.; Street, W. Nick (1996-01-04)
      The prediction of survival time or recurrence time is an important learning problem in medical domains. The Recurrence Surface Approximation (RSA) method is a natural, effective method for predicting recurrence times using ...
    • Interfaces to PATH 3.0: Design, Implementation and Usage 

      Munson, Todd S.; Ferris, Michael C. (1998-05-05)
      Several new interfaces have recently been developed requiring PATH to solve a mixed complementarity problem. To overcome the necessity of maintaining a different version of PATH for each interface, the code was reorganized ...
    • Jacobian Smoothing Methods for General Nonlinear Complementarity Problems 

      Pieper, Heiko; Kanzow, Christian (1997-10-13)
      We present a new algorithm for the solution of general (not necessarily monotone) complementarity problems. The algorithm is based on a reformulation of the complementarity problem as a nonsmooth system of equations by ...
    • k-Plane Clustering 

      Mangasarian, O.L.; Bradley, P.S. (1998)
      A finite new algorithm is proposed for clustering m given points in n-dimensional real space into k clusters by generating k planes that constitute a local solution to the nonconvex problem of minimizing the sum of squares ...
    • Limit analysis of frictional block assemblies as a mathematical program with complementarity constraints 

      Tin-Loi, F.; Ferris, Michael (1999-02-15)
      The computation of the collapse loads of discrete rigid block systems, characterized by frictional (nonassociative) and tensionless contact interfaces, is formulated and solved as a special constrained optimization problem ...
    • Lineality Removal for Copositive-Plus Normal Maps 

      Ferris, Michael; Cao, Menglin (1994)
      We are concerned with solving affine variational inequalities defined by a linear map A and a polyhedral set C. Most of the existing pivotal methods for such inequalities or mixed linear complementarity problems depend on ...
    • The Linear Convergence of a Successive Linear Programming Algorithm 

      Zavriev, Sergei K.; Ferris, Michael C. (1996-12-03)
      We present a successive linear programming algorithm for solving constrained nonlinear optimization problems. The algorithm employs an Armijo procedure for updating a trust region radius. We prove the linear convergence ...
    • Linear Programming for Emergency Broadcast Systems 

      Munson, Todd; Ferris, Michael (1998-12-02)
    • Machine Learning via Polyhedral Concave Minimization 

      Mangasarian, O. L. (1995-11)
      Two fundamental problems of machine learning, misclassification minimization [10,24,18] and feature selection, [25, 29, 14] are formulated as the minimization of a concave function on the polyhedral set. Other formulations ...
    • Massive Data Discrimination via Linear Suppot Vector Machines 

      Mangasarian, O.L.; Bradley, P.S. (1999-03-31)
      A linear support vector machine formulation is used to generate a fast, finitely-terminating linear-programming algorithm for discriminating between two massive sets in n-dimensional space, where the number of points can ...