One test sentence: Man muß diese Abhängigkeiten schaffen . BigramLM 1.0573959386418885E-17 Test file: data/train.de.tok.50.t50 BigramLM probability 0.0 BigramLM log-probability -6302.336554296896 Building a trigram language model... The training data has 1000 lines. One test sentence: Man muß diese Abhängigkeiten schaffen . TrigramLM 2.8478596300533076E-21 Test file: data/train.de.tok.50.t50 TrigramLM log-probability -7448.9447524651 Perplexity Bi 311.01244498596384 ...