Aykut Firat wrote: > > Hi, > > Is it possible to solve quadratic mixed integer problems using Eclipse CLP > and the student versions of the external solvers? I could not find any > examples online. No, unfortunately not: [eclipse 1]: lib(eplex). ... XPRESS-MP Student Integer Optimiser Release 12.20 (c) Copyright Dash Associates 1984-2000 ... [eclipse 2]: X1+X2 $=< 1.9, optimize(min(-6*X1 + 2*X1^2 -2*X1*X2 + 2*X2^2), C). ?326 Error: Linear optimiser only: buy QP optimiser from Dash. XPRESS problem: 326 event(eplex_abort): Optimization aborted (optimizer status = -1) Abort -- Joachim Schimpf / phone: +44 20 7594 8187 IC-Parc, Imperial College / mailto:J.Schimpf@ic.ac.uk London SW7 2AZ, UK / http://www.icparc.ic.ac.uk/eclipseReceived on Tue Nov 27 11:48:34 2001
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