Exemplo n.º 1
0
void Wordrec::ProcessSegSearchPainPoint(
    float pain_point_priority,
    const MATRIX_COORD &pain_point, const char* pain_point_type,
    GenericVector<SegSearchPending>* pending, WERD_RES *word_res,
    LMPainPoints *pain_points, BlamerBundle *blamer_bundle) {
  if (segsearch_debug_level > 0) {
    tprintf("Classifying pain point %s priority=%.4f, col=%d, row=%d\n",
            pain_point_type, pain_point_priority,
            pain_point.col, pain_point.row);
  }
  ASSERT_HOST(pain_points != NULL);
  MATRIX *ratings = word_res->ratings;
  // Classify blob [pain_point.col pain_point.row]
  if (!pain_point.Valid(*ratings)) {
    ratings->IncreaseBandSize(pain_point.row + 1 - pain_point.col);
  }
  ASSERT_HOST(pain_point.Valid(*ratings));
  BLOB_CHOICE_LIST *classified = classify_piece(word_res->seam_array,
                                                pain_point.col, pain_point.row,
                                                pain_point_type,
                                                word_res->chopped_word,
                                                blamer_bundle);
  BLOB_CHOICE_LIST *lst = ratings->get(pain_point.col, pain_point.row);
  if (lst == NULL) {
    ratings->put(pain_point.col, pain_point.row, classified);
  } else {
    // We can not delete old BLOB_CHOICEs, since they might contain
    // ViterbiStateEntries that are parents of other "active" entries.
    // Thus if the matrix cell already contains classifications we add
    // the new ones to the beginning of the list.
    BLOB_CHOICE_IT it(lst);
    it.add_list_before(classified);
    delete classified;  // safe to delete, since empty after add_list_before()
    classified = NULL;
  }

  if (segsearch_debug_level > 0) {
    print_ratings_list("Updated ratings matrix with a new entry:",
                       ratings->get(pain_point.col, pain_point.row),
                       getDict().getUnicharset());
    ratings->print(getDict().getUnicharset());
  }

  // Insert initial "pain points" to join the newly classified blob
  // with its left and right neighbors.
  if (classified != NULL && !classified->empty()) {
    if (pain_point.col > 0) {
      pain_points->GeneratePainPoint(
          pain_point.col - 1, pain_point.row, LM_PPTYPE_SHAPE, 0.0,
          true, segsearch_max_char_wh_ratio, word_res);
    }
    if (pain_point.row + 1 < ratings->dimension()) {
      pain_points->GeneratePainPoint(
          pain_point.col, pain_point.row + 1, LM_PPTYPE_SHAPE, 0.0,
          true, segsearch_max_char_wh_ratio, word_res);
    }
  }
  (*pending)[pain_point.col].SetBlobClassified(pain_point.row);
}
Exemplo n.º 2
0
/**
 * @name chop_word_main
 *
 * Classify the blobs in this word and permute the results.  Find the
 * worst blob in the word and chop it up.  Continue this process until
 * a good answer has been found or all the blobs have been chopped up
 * enough.  Return the word level ratings.
 */
BLOB_CHOICE_LIST_VECTOR *Wordrec::chop_word_main(WERD_RES *word) {
  TBLOB *blob;
  int index;
  int did_chopping;
  STATE state;
  BLOB_CHOICE_LIST *match_result;
  MATRIX *ratings = NULL;
  DANGERR fixpt;                 /*dangerous ambig */
  inT32 bit_count;               //no of bits

  set_denorm(&word->denorm);

  BLOB_CHOICE_LIST_VECTOR *char_choices = new BLOB_CHOICE_LIST_VECTOR();
  BLOB_CHOICE_LIST_VECTOR *best_char_choices = new BLOB_CHOICE_LIST_VECTOR();

  did_chopping = 0;
  for (blob = word->chopped_word->blobs, index = 0;
       blob != NULL; blob = blob->next, index++) {
    match_result = classify_blob(blob, "chop_word:", Green);
    if (match_result == NULL)
      cprintf("Null classifier output!\n");
    *char_choices += match_result;
  }
  bit_count = index - 1;
  set_n_ones(&state, char_choices->length() - 1);
  bool acceptable = false;
  bool replaced = false;
  bool best_choice_updated =
    getDict().permute_characters(*char_choices, word->best_choice,
                                 word->raw_choice);
  if (best_choice_updated &&
      getDict().AcceptableChoice(char_choices, word->best_choice, &fixpt,
                                 CHOPPER_CALLER, &replaced)) {
    acceptable = true;
  }
  if (replaced)
    update_blob_classifications(word->chopped_word, *char_choices);
  CopyCharChoices(*char_choices, best_char_choices);
  if (!acceptable) {  // do more work to find a better choice
    did_chopping = 1;

    bool best_choice_acceptable = false;
    if (chop_enable)
      improve_by_chopping(word,
                          char_choices,
                          &state,
                          best_char_choices,
                          &fixpt,
                          &best_choice_acceptable);
    if (chop_debug)
      print_seams ("Final seam list:", word->seam_array);

    // The force_word_assoc is almost redundant to enable_assoc.  However,
    // it is not conditioned on the dict behavior.  For CJK, we need to force
    // the associator to be invoked.  When we figure out the exact behavior
    // of dict on CJK, we can remove the flag if it turns out to be redundant.
    if ((wordrec_enable_assoc && !best_choice_acceptable) || force_word_assoc) {
      ratings = word_associator(word, &state, best_char_choices,
                                &fixpt, &state);
    }
  }
  best_char_choices = rebuild_current_state(word, &state, best_char_choices,
                                            ratings);
  if (ratings != NULL) {
    if (wordrec_debug_level > 0) {
      tprintf("Final Ratings Matrix:\n");
      ratings->print(getDict().getUnicharset());
    }
    ratings->delete_matrix_pointers();
    delete ratings;
  }
  getDict().FilterWordChoices();
  char_choices->delete_data_pointers();
  delete char_choices;

  return best_char_choices;
}