23 lines
622 B
Python
23 lines
622 B
Python
documents=[
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"Python是编程语言",
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"Java是编程语言",
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"Python Python Python"
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]
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word_list=[]
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for doc in documents:
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words=doc.split()
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for word in words:
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if word not in word_list:
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word_list.append(word)
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vocab=sorted(word_list)
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print("词变：",vocab)
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bow_vectors=[]
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for doc in documents:
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words=doc.split()
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vector=[words.count(word) for word in vocab]
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bow_vectors.append(vector)
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for i,vec in enumerate(bow_vectors):
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print(f"Doc{i+1}的向量表示:{vec}")
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#两个缺点：忽略词序与语义关系
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#词汇维度爆炸与稀疏性 |