在Python中,统计词汇(word)的出现频次是一个常见的任务,可以使用多种方法来实现。以下是几种常用的方法及其示例代码: 1. 使用字典 字典是Python中一种非常高效的数据结构,可以用来存储键值对。在统计词频时,可以将词汇作为键,出现次数作为值。 python def count_word_frequency(text): words = text.split() # ...
python=[0.5,0.8,-0.1]ranks=[-0.5,0.1,0.8]programming=[0.9,0.4,0.1] 如果我们计算“python”和“ranks”的点积,我们会得到: 如果我们计算“python”和“programming”的点积,我们会得到: 由于“python”和“ranks”之间的得分低于“python”和“programming”之间的得分,我们可以说“python”和“programming”更相...
pip install python-docx 1. 接下来,我们可以使用以下代码来读取Word文档中的内容: fromdocximportDocument# 打开Word文档doc=Document('example.docx')# 遍历文档中的段落forparaindoc.paragraphs:print(para.text)# 遍历文档中的表格fortableindoc.tables:forrowintable.rows:forcellinrow.cells:print(cell.text) ...
fromcollectionsimportCounterimportmatplotlib.pyplotaspltdefword_frequency(text):words=text.split()frequency=Counter(words)# 返回最常见的10个词returnfrequency.most_common(10)if__name__=="__main__":frequency=word_frequency(text)words,counts=zip(*frequency)plt.pie(counts,labels=words,autopct='%1.1f%...
Write a Python program to split a sentence into words and then use a loop to build a frequency table. Write a Python program to implement word counting using collections.Counter on the split sentence. Write a Python program to count word occurrences while ignoring case and punctuation. ...
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As you can see, this built-in Python method already does a decent job tokenizing a simple sentence. Its only “mistake” was on the last word, where it included the sentence-ending punctuation with the token “26.” Normally you’d like tokens to be separated from neighboring punctuation ...
vocab_dict=dict(Counter(text).most_common(MAX_VOCAB_SIZE-1))# 得到单词字典表,key是单词,value是次数 vocab_dict['<UNK>']=len(text)-np.sum(list(vocab_dict.values()))# 把不常用的单词都编码为"<UNK>"idx2word=[wordforwordinvocab_dict.keys()]word2idx={word:ifori,wordinenumerate(idx2...
{word:'',count:0})// Return the word with the maximum frequencyreturnmax.word}// Test the 'test' function with different input strings and output the resultconsole.log(test("The quick brown fox jumps over the lazy dog"))// 'the'console.log(test("Python is a high-level, general-...
using file2ws"""## word counterwc =Counter(word_stream)## total occurances of training wordsself.n_train_words =sum(wc.values())## Sort the words by their counts, filter out infrequent words,## construct vocab_word (a dict) and put them in self.vocabself.vocab = map(lambdax: dict...