else { m_storage      = null; m_keys         = null; m_kernelMatrix = null; }
  protected void initVars(Instances data) {    super.initVars(data);        m_numInsts = m_data.numInstances();    if (getCacheSize() > 0) {      // Use LRU cache      m_storage = new double[m_cacheSize * m_cacheSlots];      m_keys    = new long[m_cacheSize * m_cacheSlots];    }   }