- Speech and Language Processing by Jurafsky and Martin
- Excellent reference!
- Introduction to Information Retrieval by Manning, Raghavan, and Schütze
- Free resource. While IR, the methods discussed are relevant to many NLP tasks.
- Movie review dataset: http://www.cs.cornell.edu/people/pabo/movie-review-data/
- text understanding: http://research.microsoft.com/en-us/um/redmond/projects/mctest/
- relation extraction corpus: https://code.google.com/archive/p/relation-extraction-corpus/downloads
- syntactic n-grams, etc.: https://research.googleblog.com/2013/12/free-language-lessons-for-computers.html?m=1
- The Language Goldmine: http://languagegoldmine.com
- various: http://archive.ics.uci.edu/ml/datasets.html?format=&task=&att=&area=&numAtt=&numIns=&type=text&sort=nameUp&view=table