How to sum up the number of words frequency using fd.items() from FreqDist?
>>> fd = FreqDist(text)
>>> most_freq_w = fd.keys()[:10] #gives me the most 10 frequent words in the text
>>> #here I should sum up numbers of each of these 10 freq words appear in the text
eg if each word in most_freq_w
appear 10 times, the result should be 100
!!! I don't need that number of all words in the text, just the 10 most frequent
I'm not familiar with nltk
, but since FreqDist
derives from dict
, then the following should work:
v = fd.values()
v.sort()
count = sum(v[-10:])
To find the number of times a word appears in the corpus(your piece of text):
raw="<your file>"
tokens = nltk.word_tokenize(raw)
fd = FreqDist(tokens)
print fd['<your word here>']
It has a pretty print feature
fd.pprint()
will do it.
如果FreqDist
是单词到其频率的映射:
sum(map(fd.get, most_freq_w))
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