/** * wrap up various variables to save memeory and do some housekeeping after optimization has * finished. * * @throws Exception if something goes wrong */ protected void wrapUp() throws Exception { m_target = null; m_nEvals = m_kernel.numEvals(); m_nCacheHits = m_kernel.numCacheHits(); if ((m_SVM.getKernel() instanceof PolyKernel) && ((PolyKernel) m_SVM.getKernel()).getExponent() == 1.0) { // convert alpha's to weights double[] weights = new double[m_data.numAttributes()]; for (int k = m_supportVectors.getNext(-1); k != -1; k = m_supportVectors.getNext(k)) { for (int j = 0; j < weights.length; j++) { if (j != m_classIndex) { weights[j] += (m_alpha[k] - m_alphaStar[k]) * m_data.instance(k).value(j); } } } m_weights = weights; // release memory m_alpha = null; m_alphaStar = null; m_kernel = null; } m_bModelBuilt = true; }