NLTK (Natural Language Toolkit) is an open-source library designed for working with human language data. It provides easy-to-use interfaces to over 50 corpora and lexical resources, along with a suite of text processing libraries for classification, tokenization, stemming, tagging, parsing, and more.
Key features
- Comprehensive text processing libraries
- Access to over 50 corpora and lexical resources
- Tokenization, stemming, and tagging functionalities
- Support for various NLP tasks like classification and parsing
- Extensive documentation and community support
Pros
- Completely free to use
- Rich functionality for diverse NLP tasks
- Strong community and educational resources
- Well-documented with numerous tutorials
Cons
- Steeper learning curve for beginners
- Performance can lag with large datasets
- Limited built-in visualization tools