exp.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [],
   "source": [
    "import pandas as pd\n",
    "from bertopic import BERTopic\n",
    "from ckiptagger import construct_dictionary, WS, POS, NER\n",
    "from transformers import AutoModelForTokenClassification\n",
    "import numpy as np\n",
    "import random\n",
    "import torch"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [],
   "source": [
    "def set_seed(seed: int) -> None:\n",
    "  random.seed(seed)\n",
    "  np.random.seed(seed)\n",
    "  torch.manual_seed(seed)\n",
    "  torch.cuda.manual_seed_all(seed)\n",
    "\n",
    "  if torch.cuda.is_available():\n",
    "    # Disable cuDNN benchmark for deterministic selection on algorithm.\n",
    "    torch.backends.cudnn.benchmark = False\n",
    "    torch.backends.cudnn.deterministic = True\n",
    "  \n",
    "set_seed(4698)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "南韓\n"
     ]
    }
   ],
   "source": [
    "keysfile = \"data/keys.txt\"\n",
    "with open(keysfile) as file:\n",
    "    lines = file.read().splitlines() \n",
    "\n",
    "print(lines[1])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [],
   "source": [
    "keydict = { l: 1 for l in lines}\n",
    "dictionary = construct_dictionary(keydict)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [
    {
     "name": "stderr",
     "output_type": "stream",
     "text": [
      "2024-04-10 13:31:21.802783: I tensorflow/compiler/mlir/mlir_graph_optimization_pass.cc:375] MLIR V1 optimization pass is not enabled\n"
     ]
    }
   ],
   "source": [
    "ws = WS(\"./data\")\n",
    "pos = POS(\"./data\")\n",
    "ner = NER(\"./data\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {},
   "outputs": [],
   "source": [
    "df = pd.read_csv(\"data/data.csv\")\n",
    "df = df[[\"year\", \"name\", \"label\", \"description\"]]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {},
   "outputs": [],
   "source": [
    "\n",
    "stoptext = open('data/stopword.txt', encoding='utf-8').read()\n",
    "stopwords = stoptext.split('\\n')\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {},
   "outputs": [],
   "source": [
    "sentence_list = df[\"description\"].tolist()\n",
    "word_sentence_list = ws(\n",
    "    sentence_list,\n",
    "    sentence_segmentation = True, # To consider delimiters\n",
    "    segment_delimiter_set = {\",\", \"。\", \":\", \"?\", \"!\", \";\"}, # This is the defualt set of delimiters\n",
    "    recommend_dictionary = dictionary # words in this dictionary are encouraged    \n",
    ")\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {},
   "outputs": [],
   "source": [
    "# 轉換為BERTopic 可接受格式\n",
    "ws = [\" \".join(w) for w in word_sentence_list]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "metadata": {},
   "outputs": [
    {
     "name": "stderr",
     "output_type": "stream",
     "text": [
      "2024-04-10 13:34:52,128 - BERTopic - Embedding - Transforming documents to embeddings.\n",
      "Batches: 100%|██████████| 99/99 [00:37<00:00,  2.67it/s]\n",
      "2024-04-10 13:35:32,437 - BERTopic - Embedding - Completed ✓\n",
      "2024-04-10 13:35:32,438 - BERTopic - Dimensionality - Fitting the dimensionality reduction algorithm\n",
      "2024-04-10 13:35:41,960 - BERTopic - Dimensionality - Completed ✓\n",
      "2024-04-10 13:35:41,960 - BERTopic - Cluster - Start clustering the reduced embeddings\n",
      "2024-04-10 13:35:42,022 - BERTopic - Cluster - Completed ✓\n",
      "2024-04-10 13:35:42,026 - BERTopic - Representation - Extracting topics from clusters using representation models.\n",
      "2024-04-10 13:35:42,353 - BERTopic - Representation - Completed ✓\n"
     ]
    }
   ],
   "source": [
    "model = AutoModelForTokenClassification.from_pretrained(\"ckiplab/bert-base-chinese-ws\")\n",
    "topic_model = BERTopic(\n",
    "    language=\"chinese\", \n",
    "    embedding_model=model,  \n",
    "    verbose=True\n",
    ")\n",
    "topics, probs = topic_model.fit_transform(ws)\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "metadata": {},
   "outputs": [],
   "source": [
    "timestamps = df.year.tolist()  # 讀取data.csv檔案中的 year 資料，作為我們的timestamp\n",
    "timestamps = [f\"{str(int(t)+1911)}-01-01\" for t in timestamps]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 19,
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   "outputs": [
    {
     "name": "stderr",
     "output_type": "stream",
     "text": [
      "0it [00:00, ?it/s]"
     ]
    },
    {
     "name": "stderr",
     "output_type": "stream",
     "text": [
      "8it [00:01,  4.88it/s]\n"
     ]
    },
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          "<b>Topic 3</b><br>Words: 食品, 食品產業, 食材, 校園午餐, 加工技術",
          "<b>Topic 3</b><br>Words: 食品, 食品產業, 食材, 開發, 國產",
          "<b>Topic 3</b><br>Words: 食品, 食品產業, 肥胖, 食材, 氣候變遷",
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          "<b>Topic 8</b><br>Words: 車輛, 車牌辨識, kr, 車廠, 雷達",
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    "# 各 Topic 時間序列圖\n",
    "topics_over_time = topic_model.topics_over_time(\n",
    "    ws,     \n",
    "    timestamps,     \n",
    ")\n",
    "tot_fig = topic_model.visualize_topics_over_time(\n",
    "    topics_over_time, top_n_topics=12, width=1000\n",
    ")\n",
    "tot_fig"
   ]
  },
  {
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   "execution_count": 17,
   "metadata": {},
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   ],
   "source": [
    "# 各 Topic TF-IDF 關鍵字直方圖\n",
    "bar_fig = topic_model.visualize_barchart(\n",
    "    top_n_topics=12,\n",
    "    width=230,\n",
    ")\n",
    "bar_fig"
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  },
  {
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   "execution_count": 22,
   "metadata": {},
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        "title": {
         "font": {
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   ],
   "source": [
    "# 各 Topic 間距離圖\n",
    "topic_fig = topic_model.visualize_topics(\n",
    "    top_n_topics=10,\n",
    "    width=1000,\n",
    ")\n",
    "topic_fig"
   ]
  }
 ],
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