boolean hasMinFeatureCount(String feature){
  if (minFeatureCount == 0)   return true;
  Set<Integer> ids=clippedFeatureIndex.get(feature);
  if (ids == null)   return false;
  return ids.size() >= minFeatureCount;
}

boolean hasMinFeatureCount ( String feature ) { if ( minFeatureCount == 0 ) return true ; Set < Integer > ids = clippedFeatureIndex . get ( feature ) ; if ( ids == null ) return false ; return ids . size ( ) >= minFeatureCount ; }
determine whether a feature has been seen enough times to learn a decoding model weight for it
