MATLAB OPTIMIZATION TOOLBOX - RELEASE NOTES Manuale Utente Scaricare il pdf (Pagina 16)

R2014b

2-2

Dual-simplex algorithm in linprog linear programming solver

linprog has a new algorithm option named 'dual-simplex'. The algorithm saves

memory when you specify sparse constraint matrices. For details, see the function

reference page.

Currently, 'dual-simplex' returns an empty Lagrange multiplier structure lambda

and firstorderopt field in the output structure.

Interior-point algorithm in lsqlin linear least-squares solver

lsqlin has a new algorithm option named 'interior-point'. The algorithm handles all

types of constraints and saves memory when you specify sparse constraint matrices. For

details, see the function reference page.

Plot functions and output functions for monitoring progress of

intlinprog solver

intlinprog accepts OutputFcn and PlotFcns options. For details, see intlinprog Output

Functions and Plot Functions.

There is a built-in output function that collects all integer feasible solutions that

intlinprog encounters. Choose this output function by using optimoptions to set the

OutputFcn option to @savemilpsolutions.

There is a built-in plot function that shows details of the solver iterations. Choose this

plot function by using optimoptions to set the PlotFcns option to @optimplotmilp.

Levenberg-Marquardt InitDamping option

The fsolve, lsqcurvefit, and lsqnonlin solvers can use the 'levenberg-marquardt'

algorithm. To initialize the Levenberg-Marquardt parameter differently than its default,

set the new InitDamping option using optimoptions.

Compatibility Considerations

Previously, to initialize the Levenberg-Marquardt parameter you would pass a cell array

in the Algorithm option when using optimset, such as

options = optimset('Algorithm',{'levenberg-marquardt',0.1});

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MATLAB OPTIMIZATION TOOLBOX - RELEASE NOTES Manuale Utente Pagina 16