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Workshop#3 POS Tagging Using NLTK (Hour 5–6)

  • Raymond S. T. Lee

摘要

In Chap. 3 , we studied basic concepts and theories related to Part-of-Speech (POS) and various POS tagging techniques. This workshop explores how to implement POS tagging by using NLTK starting from a simple recap on tokenization techniques and two fundamental processes in word-level progressing: stemming and stop-word removal, which will introduce two types of stemming techniques: Porter Stemmer and Snowball Stemmer that can be integrated with WordCloud commonly used in data visualization followed by the main theme of this workshop with the introduction of PENN Treebank Tagset and to create your own POS tagger.