how to do tagging without "attribute" file? about crfsuite

[usptact]

The feature extraction is up to you. You should be able to extract the features from unlabeled data, without knowing the correct label. Some simple features in NLP can be unigrams/bigrams, character-ngrams.

[sinb]

@usptact
Yes, I've designed some features, but only labelled data can be transformed to crfsuite "feature/attribute" file using chunking.py.
After trained, when doing tagging, I only have unlabelled data, then how do I transform it to "feature/attribute" file?

thanks.