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姓名	林家琪(Chia-Chi Lin)  查詢紙本館藏	畢業系所	資訊管理學系
論文名稱	基於 BERT 與 TF-IDF 特徵之假消息辨識模型—以繁體中文為例 (Traditional Chinese Fake news Detection based on Bert Model Combined with TF-IDF (Term Frequency – Inverse Document Frequency))
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檔案	[Endnote RIS 格式]    [Bibtex 格式]    [相關文章]   [文章引用]   [完整記錄]   [館藏目錄]   至系統瀏覽論文 (2027-7-6以後開放)
摘要(中)	假消息問題在臺灣與國際上日益嚴重。假消息帶來影響層面廣泛，政治層面可改變 選舉結果、疾病層面可使民眾恐慌，戰爭中更以此為工具，混淆閱聽者之判斷。為防 治假消息，不同國家訂定法律，社群平台也提出方案防治假消息。然而，假消息查核 耗費人力，資料量大且時效緩慢，因此近年不同研究皆致力於使用深度學習技術進行 假消息辨識，因應巨大的資料量並希望能減少人力成本。 然而，繁體中文使用族群龐大，也同樣的面對假消息問題，但繁體中文之假消息 辨識相關研究仍然較少。因應繁體中文使用者需求，本研究提出深度學習模型 BERT(Bidirectional Encoder Representations from Transformers)-TFIDF(Term Frequency – Inverse Document Frequency) 進行假消息辨識，並以繁體中文假消息資料集進行驗 證以探討其表現。資料集以「Cofacts 真的假的」事實查核平台及其他 3 個民間單位、 5 個政府單位之消息為來源，經過資料處理後，進行 BERT-TFIDF 與其他模型之比 較，並應用於英文資料集「Liar, liar pants on fire」。實驗結果顯示本研究提出之 BERT- TFIDF 模型可準確辨識出 90% 的繁體中文假消息，同時應用在英文資料集上亦可提 升 Recall 和 F-measure。本研究成果提供良好辨識假消息之預測模型，並驗證 TF- IDF 語意特徵結合深度學習之預測。
摘要(英)	Fake news is becoming an increasingly serious problem in Taiwan and in the rest of the world. This problem has substantially affected many aspects of our daily life, such as politics and public health, for example, affecting election results and creating disease- related panic to the public. To a worse extent, fake news can easily confuse people’s judgment when wars break out. Up until today, many countries have enacted laws and countless social network sites have proposed all kinds of plans to prevent fake news from spreading. However, misinformation-checking involves a labor-intensive and time- consuming process to verify a huge amount of data. To deal with the huge amount of data, a number of researchers in recent years have employed deep learning techniques to verify misinformation in an attempt to reduce manpower and costs. Traditional Chinese users are a big group that is also faced with fake news. Up until now, very few researchers have studied the topics related to the verification of traditional Chinese misinformation. To cope with traditional Chinese users’ need, this paper introduced a deep learning model “BERT (Bidirectional Encoder Representations from Transformers)-TFIDF (Term Frequency – Inverse Document Frequency)” to verify fake news, using traditional Chinese fake news dataset to evaluate the performance of BERT- TFIDF. The dataset is made up of the information obtained from a fact-checking platform “Cofacts”, 3 private organizations and 5 government agencies. In this paper, data was processed and BERT-TFIDF was compared with other models and then applied to an English dataset “Liar, liar pants on fire.” According to the experiment results, the BERT- TFIDF had identified 90% of traditional Chinese misinformation and was sufficient to improve the “Recall” and “F-measure” of English dataset. The research results provide a predictive model with proven ability to verity fake news and to validate the prediction of semantic features combined with deep learning techniques.
關鍵字(中)	★ BERT ★ TF-IDF ★ 深度學習 ★ 假消息辨識	關鍵字(英)	★ BERT ★ TF-IDF ★ Deep Learning ★ Fake News Detection
論文目次	摘要 i Abstract ii 誌謝 iii 目錄 iv 圖目錄 v 表目錄 vi 第一章 緒論 1 1.1 研究背景 1 1.2 臺灣假消息現況 2 1.3 研究動機與目的 3 1.4 論文架構 5 第二章 文獻探討 6 2.1 假消息辨識之研究方向 6 2.2 機器學習、深度學習於文字類型假消息辨識 8 第三章 研究方法 11 3.1 研究流程 11 3.2 模型設計 15 3.3 BERT-TFIDF 模型 20 3.4 實驗流程 24 第四章 實驗結果與分析 28 4.1實驗環境 28 4.2 實驗資料與資料分配 29 4.3 評估與驗證 31 4.4 參數設定 33 4.5 實驗結果 36 第五章 研究結論與建議 41
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指導教授	許文錦	審核日期	2022-7-18
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