static StringBuilder scoreTextPredictAlgo_buf;

static double scoreTextPredictAlgo(Algorithm algorithm, S text) {

  ret scoreTextPredictAlgo(algorithm, text, 0, 0);

}

static double scoreTextPredictAlgo(Algorithm algorithm, S text,

  int descLength, int pivotLength) {

  long time = now();

  int score = 0;

  int n = l(text);

  for (int pos = 0; pos < n; ) {

    S s = algorithm.predict(n-pos);

    if (empty(s)) s = " "; // We're lenient

    if (l(s) > n-pos)

      s = substring(s, 0, n-pos);

    if (scoreTextPredictAlgo_buf != null) scoreTextPredictAlgo_buf.append(s);

    int j = pos+l(s);

    S real = substring(text, pos, j);

    score += getNumberOfEqualCharacters(real, s);

    algorithm.feed(real);

    pos = j;

  }

  double score2 = score*100.0/n-lengthPunishment(descLength, pivotLength);

  done_always(time, "SCORE: " + score + "/" + n + " = " + formatDouble(score2, 2) + "%");

  if (lastSilentException() != null)

    printStackTrace(lastSilentException());

  ret score2;

}