11 lines
609 B
Plaintext
11 lines
609 B
Plaintext
Data description:
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Penn Treebank Corpus
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- should be free for research purposes
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- the same processing of data as used in many LM papers, including "Empirical Evaluation and Combination of Advanced Language Modeling Techniques"
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- ptb.train.txt: train set
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- ptb.valid.txt: development set (should be used just for tuning hyper-parameters, but not for training)
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- ptb.test.txt: test set for reporting perplexity
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- ptb.char.*: the same data, just rewritten as sequences of characters, with spaces rewritten as '_' - useful for training character based models, as is shown in example 9
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