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agomez |
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#include "optinfo.h" |
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#include "errorhandler.h" |
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#include "gadget.h" |
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#include "global.h" |
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OptInfoPso::OptInfoPso()
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: OptInfo(), goal(1e-5), psoiter(100000), c1(1.496), c2(1.496),
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w_max(PSO_INERTIA), w_min(0.3), clamp_pos(1), nhood_strategy(PSO_NHOOD_RING),
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nhood_size(5), w_strategy(PSO_W_LIN_DEC)
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{
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type = OPTPSO;
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handle.logMessage(LOGMESSAGE, "Initialising PSO optimisation algorithm");
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}
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void OptInfoPso::read(CommentStream& infile, char* text) {
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handle.logMessage(LOGMESSAGE, "Reading PSO optimisation parameters");
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unsigned s1 = 0;
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unsigned s2 = 0;
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unsigned s3 = 0;
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int count = 0;
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while (!infile.eof() && strcasecmp(text, "[PSO]") && strcasecmp(text, "[simann]") && strcasecmp(text, "[hooke]") && strcasecmp(text, "[bfgs]")) {
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infile >> ws;
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if (strcasecmp(text, "seed") == 0) {
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int s = 0;
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infile >> s >> ws;
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s1 = s;
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handle.logMessage(LOGMESSAGE, "Initialising random number generator with", s);
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srand(s1);
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}
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else if (strcasecmp(text, "psoiter") == 0) {
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infile >> psoiter;
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count++;
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} else if (strcasecmp(text, "goal") == 0) {
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infile >> goal;
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count++;
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} else if (strcasecmp(text, "c1") == 0) {
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infile >> c1;
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count++;
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} else if (strcasecmp(text, "c2") == 0) {
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infile >> c2;
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count++;
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} else if (strcasecmp(text, "w_max") == 0) {
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infile >> w_max;
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count++;
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} else if (strcasecmp(text, "w_min") == 0) {
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infile >> w_min;
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count++;
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} else if (strcasecmp(text, "clamp_pos") == 0) {
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infile >> clamp_pos;
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count++;
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} else if (strcasecmp(text, "nhood_strategy") == 0) {
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infile >> nhood_strategy;
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count++;
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} else if (strcasecmp(text, "nhood_size") == 0) {
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infile >> nhood_size;
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count++;
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} else if (strcasecmp(text, "w_strategy") == 0) {
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infile >> w_strategy;
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count++;
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} else if (strcasecmp(text, "size") == 0) {
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infile >> size;
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count++;
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} else {
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handle.logMessage(LOGINFO, "Warning in optinfofile - unrecognised option", text);
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infile >> text; //read and ignore the next entry
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}
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infile >> text;
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}
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if (count == 0)
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handle.logMessage(LOGINFO, "Warning - no parameters specified for Simulated Annealing optimisation algorithm");
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//check the values specified in the optinfo file ...
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if (nhood_strategy!=PSO_NHOOD_GLOBAL &&
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nhood_strategy!=PSO_NHOOD_RING &&
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nhood_strategy!=PSO_NHOOD_RANDOM) {
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handle.logMessage(LOGINFO, "Warning in optinfofile - Invalid nhood_strategy. Setting to default PSO_NHOOD_RANDOM");
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nhood_strategy=PSO_NHOOD_RANDOM;
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}
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if (w_strategy!=PSO_W_LIN_DEC &&
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w_strategy!=PSO_W_CONST) {
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handle.logMessage(LOGINFO, "Warning in optinfofile - Invalid w_strategy. Setting to default PSO_W_LIN_DEC");
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w_strategy=PSO_W_LIN_DEC;
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}
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}
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void OptInfoPso::Print(ofstream& outfile, int prec) {
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outfile << "; PSO algorithm ran for " << iters
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<< " function evaluations\n; and stopped when the likelihood value was "
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<< setprecision(prec) << score;
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if (converge == -1)
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outfile << "\n; because an error occured during the optimisation\n";
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else if (converge == 1)
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outfile << "\n; because the convergence criteria were met\n";
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else
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outfile << "\n; because the maximum number of function evaluations was reached\n";
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}
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