public double split(int index1, int index2, int clusterIndex, int[] initClusterSites) {
try {
double logqSplit = 0.0;
// Create a parameter by sampling from the prior
// QuietRealParameter newParam = getSample(paramBaseDistr, paramList.getUpper(),
// paramList.getLower());
QuietRealParameter newRates = new QuietRealParameter(new Double[1]);
logqSplit +=
proposeNewValueInLogSpace(
newRates,
ratesList.getValue(clusterIndex, 0),
ratesBaseDistr,
ratesList.getUpper(),
ratesList.getLower());
ratesList.getValues(clusterIndex);
// QuietRealParameter newModel = getSample(modelBaseDistr, modelList.getUpper(),
// modelList.getLower());
QuietRealParameter newAlpha = new QuietRealParameter(new Double[1]);
logqSplit +=
proposeNewValueInLogSpace(
newAlpha,
alphaList.getValue(clusterIndex, 0),
alphaBaseDistr,
alphaList.getUpper(),
alphaList.getLower());
// QuietRealParameter newFreqs = getSample(freqsBaseDistr, freqsList.getUpper(),
// freqsList.getLower());
QuietRealParameter newInvPr = new QuietRealParameter(new Double[1]);
logqSplit +=
proposeNewValue(
newInvPr,
invPrList.getValues(clusterIndex),
invPrBaseDistr,
invPrList.getUpper(),
invPrList.getLower());
QuietRealParameter newSiteModel = new QuietRealParameter(new Double[1]);
logqSplit +=
proposeDiscreteValue(
newSiteModel,
siteModelList.getValue(clusterIndex, 0),
siteModelBaseDistr,
siteModelList.getUpper(),
siteModelList.getLower());
// Perform a split
// paramList.splitParameter(clusterIndex,newParam);
// modelList.splitParameter(clusterIndex,newModel);
// freqsList.splitParameter(clusterIndex,newFreqs);
// Remove the index 1 and index 2 from the cluster
int[] clusterSites = new int[initClusterSites.length - 2];
int k = 0;
for (int i = 0; i < initClusterSites.length; i++) {
if (initClusterSites[i] != index1 && initClusterSites[i] != index2) {
clusterSites[k++] = initClusterSites[i];
}
}
// Form a new cluster with index 1
// paramPointers.point(index1,newParam);
// modelPointers.point(index1,newModel);
// freqsPointers.point(index1,newFreqs);
// Shuffle the cluster_-{index_1,index_2} to obtain a random permutation
Randomizer.shuffle(clusterSites);
// Create the weight vector of site patterns according to the order of the shuffled index.
/*int[] tempWeights = new int[tempLikelihood.m_data.get().getPatternCount()];
int patIndex;
for(int i = 0; i < clusterSites.length; i++){
patIndex = tempLikelihood.m_data.get().getPatternIndex(clusterSites[i]);
tempWeights[patIndex] = 1;
}*/
tempLikelihood.setupPatternWeightsFromSites(clusterSites);
// Site log likelihoods in the order of the shuffled sites
double[] logLik1 =
tempLikelihood.calculateLogP(
newAlpha.getValue(),
newInvPr.getValue(),
newRates.getValue(),
newSiteModel.getValue(),
clusterSites);
double[] logLik2 = new double[clusterSites.length];
for (int i = 0; i < logLik2.length; i++) {
// logLik2[i] = dpTreeLikelihood.getSiteLogLikelihood(clusterIndex,clusterSites[i]);
logLik2[i] =
getSiteLogLikelihood(
ratesList.getParameterIDNumber(clusterIndex), clusterIndex, clusterSites[i]);
}
double[] lik1 = new double[logLik1.length];
double[] lik2 = new double[logLik2.length];
double maxLog;
// scale it so it may be more accurate
for (int i = 0; i < logLik1.length; i++) {
maxLog = Math.min(logLik1[i], logLik2[i]);
if (Math.exp(maxLog) < 1e-100) {
if (maxLog == logLik1[i]) {
lik1[i] = 1.0;
lik2[i] = Math.exp(logLik2[i] - maxLog);
} else {
lik1[i] = Math.exp(logLik1[i] - maxLog);
lik2[i] = 1.0;
}
} else {
lik1[i] = Math.exp(logLik1[i]);
lik2[i] = Math.exp(logLik2[i]);
}
}
/*boolean ohCrap = false;
for(int i = 0; i < logLik1.length; i++){
if(Double.isNaN(logLik1[i])){
return Double.NEGATIVE_INFINITY;
//ohCrap = true;
//System.out.println("logLik1: "+logLik1);
//logLik1[i] = Double.NEGATIVE_INFINITY;
}
if(Double.isNaN(logLik2[i])){
return Double.NEGATIVE_INFINITY;
//ohCrap = true;
//System.out.println("logLik1: "+logLik2);
//logLik2[i] = Double.NEGATIVE_INFINITY;
}
lik1[i] = Math.exp(logLik1[i]);
lik2[i] = Math.exp(logLik2[i]);
//System.out.println(lik1[i]+" "+lik2[i]);
}
if(ohCrap){
for(int i = 0; i < newRates.getDimension();i++){
System.out.print(newRates.getValue(i)+" ");
}
System.out.println();
} */
/*for(int i = 0; i < clusterSites.length;i++){
System.out.println("clusterSites: "+clusterSites[i]);
}
System.out.println("index 1: "+index1+" index2: "+index2);*/
int cluster1Count = 1;
int cluster2Count = 1;
// Assign members of the existing cluster (except for indice 1 and 2) randomly
// to the existing and the new cluster
double psi1, psi2, newClusterProb, draw;
int[] newAssignment = new int[clusterSites.length];
for (int i = 0; i < clusterSites.length; i++) {
psi1 = cluster1Count * lik1[i];
psi2 = cluster2Count * lik2[i];
newClusterProb = psi1 / (psi1 + psi2);
draw = Randomizer.nextDouble();
if (draw < newClusterProb) {
// System.out.println("in new cluster: "+clusterSites[i]);
// paramPointers.point(clusterSites[i],newParam);
// modelPointers.point(clusterSites[i],newModel);
// freqsPointers.point(clusterSites[i],newFreqs);
newAssignment[cluster1Count - 1] = clusterSites[i];
logqSplit += Math.log(newClusterProb);
cluster1Count++;
} else {
logqSplit += Math.log(1.0 - newClusterProb);
cluster2Count++;
}
}
// logqSplit += //paramBaseDistr.calcLogP(newParam) +
// modelBaseDistr.calcLogP(newModel)+
// freqsBaseDistr.calcLogP(newFreqs);
if (-logqSplit > Double.NEGATIVE_INFINITY) {
ratesList = ratesListInput.get(this);
alphaList = alphaListInput.get(this);
invPrList = invPrListInput.get(this);
siteModelList = siteModelListInput.get(this);
ratesPointers = ratesPointersInput.get(this);
// Perform a split
ratesList.splitParameter(clusterIndex, newRates);
alphaList.splitParameter(clusterIndex, newAlpha);
invPrList.splitParameter(clusterIndex, newInvPr);
siteModelList.splitParameter(clusterIndex, newSiteModel);
// Form a new cluster with index 1
ratesPointers.point(index1, newRates);
for (int i = 0; i < (cluster1Count - 1); i++) {
ratesPointers.point(newAssignment[i], newRates);
}
}
return -logqSplit;
} catch (Exception e) {
// freqsBaseDistr.printDetails();
throw new RuntimeException(e);
}
}
