Natural Language Processing: Python and NLTK
by Nitin Hardeniya, Jacob Perkins, Deepti Chopra, Nisheeth Joshi, Iti Mathur
Chunking
Chunking is shallow parsing where instead of reaching out to the deep structure of the sentence, we try to club some chunks of the sentences that constitute some meaning.
A chunk can be defined as the minimal unit that can be processed. So, for example, the sentence "the President speaks about the health care reforms" can be broken into two chunks, one is "the President", which is noun dominated, and hence is called a noun phrase (NP). The remaining part of the sentence is dominated by a verb, hence it is called a verb phrase (VP). If you see, there is one more sub-chunk in the part "speaks about the health care reforms". Here, one more NP exists that can be broken down again in "speaks about" and "health care reforms", as shown in the ...
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