06-自然语言处理/00-文本预处理常用函数.ipynb

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    "def normalize_text(text):\n",
    "    text = text.lower()\n",
    "\n",
    "    # 删除英文标点符号\n",
    "    exclude = set(string.punctuation)\n",
    "    text = \"\".join(ch for ch in text if ch not in exclude)\n",
    "\n",
    "    # 删除冠词\n",
    "    regex = re.compile(r\"b(a|an|the)\\b\", re.UNICODE)\n",
    "    text = re.sub(regex, \" \", text)\n",
    "\n",
    "    # 删除多余的空格\n",
    "    text = \" \".join(text.split())\n",
    "    return text"
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    "def preprocessor(doc):\n",
    "    \"\"\"删除文本中所有非中文词及常用标点\"\"\"\n",
    "    regx = re.compile('[^\\u4e00-\\u9fa5‘’“”，、；。？！《》（）.0123456789%// A-Za-z]')\n",
    "    doc = regx.sub('', doc)\n",
    "    return doc"
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