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NLP | Replacing verb phrases and cardinals nouns

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Code below —  swap_verb_phrase class which swaps the left side of the chunk to the right, using the verb as the pivot point. It uses the first_chunk_index () function defined to find the turn-around verb.

Code # 1: swap_verb_phrase class to replace the verb

def swap_verb_phrase (chunk):

def vbpred (wt):

  word, tag = wt

return tag! = ’ VBG’ and tag.startswith ( ’VB’ ) and len (tag)"  2

 

vbidx = first_chunk_index (chunk, vbpred)

 

if vbidx is None :

return chunk

 

return chunk [vbidx + 1 :] + chunk [: vbidx]

Code # 2: Assessment swap_verb_phrase

swap_verb_phrase ([( ’the’ , ’DT’ ), ( ’book’ , ’ NN’ ),

( ’was’ , ’VBD’ ), ( ’ great’ , ’JJ’ )])

Output:

 [(’great’,’ JJ’), (’the’,’ DT’), (’book’,’ NN’)] 

The code does not revolve around the gerund, because they usually used to describe su 

Code # 3:

swap_verb_phrase ([( ’this’ , ’ DT’ ), 

( ’gripping’ , ’VBG’ ), ( ’ book’ , ’NN’ ), 

( ’is’ , ’VBZ’ ), ( ’fantastic’ , ’ JJ’ )])

Output:

 [(’fantastic’,’ JJ’), (’this’,’ DT’), (’gripping’,’ VBG’), (’book’,’ NN’)] 

Cardinal noun replacement:
Cardinals in a chunk are numbered and labeled as CD. These cardinals occur before the noun acardinals. Swapping cardinals with nouns is useful to put a cardinal in front of a noun.

Code # 4: Swapping Cardinal Nouns

swap_noun_cardinal ( [( ’Dec.’ , ’ NNP’ ), ( ’10’ , ’CD’ )])

  

swap_noun_cardinal ([( ’the’ , ’ DT’ ), ( ’top’ , ’NN’ ), ( ’ 10’ , ’CD’ )])

Output:

 [(’10’,’ CD’), (’Dec.’,’ NNP’)] [(’the’,’ DT’), (’10’,’ CD’), (’top’,’ NN’)] 

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