static Map<S, PosNegScore> dm_ontology_trainingSet_wordScores() {
  PairL<virtual Is> data = dm_ontology_trainingSet();
  L<Set<S>> posSets = map uniqueWords(mapMethod render(data.a));
  L<Set<S>> negSets = map uniqueWords(mapMethod render(data.b));
  Map<S, PosNegScore> map = ciMap();
  for (Set<S> set : posSets)
    for (S word : set)
      getOrCreatePosNegScore(map, word).pos++;
  for (Set<S> set : negSets)
    for (S word : set)
      getOrCreatePosNegScore(map, word).neg++;
  ret map;
}