Blar i Bergen Open Research Archive på forfatter "Frimannslund, Lennart"
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Inexact Solution of the Schur Complement Equation in a Primal-Dual Interior-Point Method for Semidefinite Programming
Frimannslund, Lennart (Master thesis, 2002) -
A New Generating Set Search Algorithm for Partially Separable Functions
Frimannslund, Lennart; Steihaug, Trond (ADVCOMP 2010 : The Fourth International Conference on Advanced Engineering Computing and Applications in Sciences, Conference object; Peer reviewed, 2010)A new derivative-free optimization method for unconstrained optimization of partially separable functions is presented. Using average curvature information computed from sampled function values the method generates an ... -
On a New Method for Derivative Free Optimization
Frimannslund, Lennart; Steihaug, Trond (Peer reviewed; Journal article, 2011)A new derivative-free optimization method for unconstrained optimization of partially separable functions is presented. Using average curvature information computed from sampled function values the method generates an ... -
On Curvature and Separability in Unconstrained Optimisation
Frimannslund, Lennart (Doctoral thesis, 2006-06-16) -
Solving the pooling problem with LMI relaxations
Frimannslund, Lennart; El Ghami, Mohamed; Alfaki, Mohammed; Haugland, Dag (Chapter; Peer reviewed, 2012)We consider the standard pooling problem with a single quality parameter, which is a polynomial global optimization problem occurring among other places in the oil industry. In this paper, we show that if the feasible set ...