WeightedRandomSampler.m

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namespace sampling{


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class WeightedRandomSampler
  :public sampling.RandomSampler {
    public:


        function samples = performSampling(params) {

            nparams = length(params);

            /*  Compute rescaling factor for each Desired entry to end up with
             * prod(<ranges>) = model.sampling.samples */
            rescaler = (this.Samples/prod([params(:).Desired]))^(1/nparams);

            ranges = cell(nparams,1);

            /* % Compute param ranges */
            for pidx=1:nparams
                p = params(pidx);
                num = round(p.Desired * rescaler);
                ranges[pidx] = sort(rand(1,num) * (p.MaxVal-p.MinVal) + p.MinVal);
            end
            /*  No combinations necessary if only one parameter */
            if nparams == 1
                samples = ranges[pidx];
            else
                samples = Utils.createCombinations(ranges);
            end
        }
};
}