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<p class="tableheader">YALMIP 3 [R20050111]</p>
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<div>
Initial implementation of <b>min</b>/<b>max</b>/<b>abs</b>/<b>norm/geomean2/sumk/sumabsk</b>. YALMIP will perform
an (conservative) analysis of the optimization problem to ensure
that these operators are used in a way that guarantee convexity,
and automatically generate a convex representation if possible. Check the
<a href="extoperators.htm">example</a> for typical usage, limitations and pit-falls.
Additional (epigraph or hypograph representable) nonlinear operators can easily be added by the user.</div>
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Support for fractional powers of posynomials (and nonlinear
operators) in <a href="geometric.htm">geometric programming
problems</a>.
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Extended the <a href="moment.htm">moment relaxation</a> module,
including polynomial
equalities, polynomial semidefinite inequalities, extraction of global
solutions and better integration in YALMIP.
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Improved <a href="sos.htm">sum of squares </a>module (better support for nonlinearly
parameterized programs, improved kernel and image representation
models).</div>
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Added the function <a href="reference.htm#dualize">dualize</a> to convert a problem given in primal SDP form (kernel representation) to a dual form (which is the standard model in YALMIP).
Some simple <a href="dual.htm#dualize">examples</a> are available.
A related (less useful) function <a href="dual.htm#primalize">
primalize</a> is also available.</div>
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Polynomial programs are automatically reduced to bilinear programs when
<a href="solvers.htm#penbmi">PENBMI</a>
or the <a href="globalbmi.htm">global solver</a> is used.</div>
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<div>
Added support for the solver <a href="solvers.htm#fmincon">fmincon</a>
and <a href="solvers.htm#fminsearch">fminsearch</a></div>
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Updated for
<a href="solvers.htm#penbmi">PENBMI
2</a> (if you still use version 1, make sure to read the
<a href="faq.htm#penbmi update">FAQ</a>).</div>
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Improved memory use for huge SDP problems (matrix dimensions in the order of thousands).</div>
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Fixed bug that caused <a href="ellipsoidal.htm">MAXDET problems</a> to become
unnecessarily
large when solved using standard SDP solver (all MAXDET problems where treated as complex-valued).</div>
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Fixed some algorithmic bugs in the built-in integer solver (caused
severe performance degradation).</div>
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Changed default settings for
the
<a href="solvers.htm#csdp">CSDP</a>
options.</div>
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<div>
Small fixes in the <a href="sos.htm">sum of squares</a> module.</div>
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Fix in the
<a href="solvers.htm#xpress">MEXPRESS</a> interface (caused severe numerical problems in recent versions of
<a href="solvers.htm#xpress">XPRESS</a>).</div>
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<p class="tableheader">YALMIP 3 [R20041015]</p>
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When a solver not supports equality constraints, the constraints are
now by default always eliminated using double-sided inequalities (this
was a bit inconsistent before, YALMIP used a reduced basis for some
solvers). Note that some solvers behave much better with a reduced
basis (see <a href="reference.htm#sdpsettings">sdpsettings</a> for
details).</div>
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<div>
Fixed small bug in the <a href="sos.htm">sum of squares</a> module
(caused a crash in some rare cases).</div>
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Fixed issues with the option <code>'savedebug'</code>.</div>
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Fixed issues with saving and loading objects.</div>
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<div>
Updated for
<a href="solvers.htm#dsdp">DSDP
5</a>.</div>
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<p class="tableheader">YALMIP 3 [R20041004]</p>
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<div>
Overloaded <code>polytope.m</code> and <code>projection.m </code>from
the <a href="solvers.htm#mpt">Multi-Parametric Toolbox</a> to
<a href="reference.htm#set">set</a> objects. See the
<a target="topic" href="mp.htm">multi-parametric example</a>.
</div>
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Added support for the
<a href="solvers.htm#cplex">CPLEX</a> interface
<a href="solvers.htm#cplex">CPLEXMEX</a>.</div>
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Added support for the
<a href="solvers.htm#xpress">XPRESS</a>
interface
<a href="solvers.htm#xpress">MEXPRESS</a>.</div>
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Added support for the
<a href="solvers.htm#qsopt">QSopt</a> interface
<a href="solvers.htm#qsopt">MEXQSOPT</a>.</div>
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Added support for the SDP solver
<a href="solvers.htm#sdplr">SDPLR</a>.</div>
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<div>
Added function <a target="topic" href="reference.htm#saveampl">saveampl</a>
to export (very) simple
<a target="_blank" href="http://www.ampl.com">AMPL</a> models.</div>
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Added function <a target="topic" href="reference.htm#export">export</a>
to export YALMIP models to various solver formats.</div>
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