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32 lines
1.0 KiB
C++
32 lines
1.0 KiB
C++
// $Id: getRandomWeights.h 962 2006-11-07 15:13:34Z privmane $
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#ifndef __GET_RANDOM_WEIGHTS
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#define __GET_RANDOM_WEIGHTS
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#include "definitions.h"
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class getRandomWeights {
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public:
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// this function starts with a vector of weights like that (1,1,1,1,1,1,...1)
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// it then take two positions by random
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// add 1 to the first, and substract 1 from the second.
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// if it can not substract 1 from the second, it draw a new "second"
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static void randomWeights(Vdouble& weights,
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const MDOUBLE expectedNumberOfSwapsPerPosition);
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// a position is chosen randomly and the weight of this position is
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// sampled from a gamma distribution with parameters alpha = 1/temperature
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// and beta = 1/temperature.
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static void randomWeightsGamma(Vdouble& weights,
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const MDOUBLE temperature);
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// this function starts with a vector of weights like that (0,0,0,...,0)
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// a position is chosen randomly and the weight of this position
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// is increased by 1. This process is repeated weights.size() times.
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static void standardBPWeights(Vdouble& weights);
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};
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#endif
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