1.27 python21行代码拼写检测 50行代码检测语言

Bertha 。 2022-08-20 03:20 147阅读 0赞

# 21行代码拼音检测 #

原理:  
基于贝叶斯来实现计算，理论依据：

相关论文显示，80-95%的拼写错误跟想要拼写的单词都只有1个编辑距离，如果觉得一次编辑不够，那再来一次计算

import re, collections
    
    def words(text): return re.findall('[a-z]+', text.lower()) 
    
    def train(features):
        model = collections.defaultdict(lambda: 1)
        for f in features:
            model[f] += 1
        return model
    
    NWORDS = train(words(file('big.txt').read()))
    
    alphabet = 'abcdefghijklmnopqrstuvwxyz'
    
    def edits1(word):
       splits     = [(word[:i], word[i:]) for i in range(len(word) + 1)]
       deletes    = [a + b[1:] for a, b in splits if b]
       transposes = [a + b[1] + b[0] + b[2:] for a, b in splits if len(b)>1]
       replaces   = [a + c + b[1:] for a, b in splits for c in alphabet if b]
       inserts    = [a + c + b     for a, b in splits for c in alphabet]
       return set(deletes + transposes + replaces + inserts)
    
    def known_edits2(word):
        return set(e2 for e1 in edits1(word) for e2 in edits1(e1) if e2 in NWORDS)
    
    def known(words): return set(w for w in words if w in NWORDS)
    
    def correct(word):
        candidates = known([word]) or known(edits1(word)) or known_edits2(word) or [word]
        return max(candidates, key=NWORDS.get)

原文  
[http://blog.csdn.net/Pwiling/article/details/50573650][http_blog.csdn.net_Pwiling_article_details_50573650]  
[http://norvig.com/spell-correct.html][http_norvig.com_spell-correct.html]

[http_blog.csdn.net_Pwiling_article_details_50573650]: http://blog.csdn.net/Pwiling/article/details/50573650
[http_norvig.com_spell-correct.html]: http://norvig.com/spell-correct.html