借助nltk.tokenize.ConditionalFreqDist()
方法,我们可以使用以下方法计算句子中单词的出现频率tokenize.ConditionalFreqDist()
方法。
用法:tokenize.ConditionalFreqDist()
返回: Return the frequency distribution of words in a dictionary.
范例1:
在这个例子中,我们可以通过使用tokenize.ConditionalFreqDist()
方法,我们能够计算句子中单词的出现次数。
# import ConditionalFreqDist() method from nltk
from nltk.probability import ConditionalFreqDist
from nltk.tokenize import word_tokenize
# Create a reference variable for Class SExprTokenizer
tk = ConditionalFreqDist()
# Create a string input
gfg = "Geeks for Geeks"
for word in word_tokenize(gfg):
condition = len(word)
tk[condition][word] += 1
print(tk)
输出:
FreqDist({‘Geeks’:2, ‘for’:1})
范例2:
# import ConditionalFreqDist() method from nltk
from nltk.probability import ConditionalFreqDist
from nltk.tokenize import word_tokenize
# Create a reference variable for Class SExprTokenizer
tk = ConditionalFreqDist()
# Create a string input
gfg = "G F G"
for word in word_tokenize(gfg):
condition = len(word)
tk[condition][word] += 1
print(tk)
输出:
FreqDist({‘G’:2, ‘F’:1})
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