本研究將以創新技術擴散理論作為基礎文獻，利用LDA主題模型方法，挖掘行動支付在台灣社會的議題結構，探討台灣行動支付主題自2012年到2018年的發展及趨勢。以行動支付相關的新聞資料，做為分析的資料來源，將建立主題模型所獲得的主題機率分佈，加上時間維度的資訊作為基礎，得到年份之間的主題強度分佈結果，將之視覺化以趨勢圖呈現，並根據各主題的趨勢特徵歸類為三大類型，分別為上升趨勢、下降趨勢以及波動型，再以個案的方式探討每個類型中的主題要素之重要性。本文最後討論理論與實務意涵，以及未來研究的建議。

This study adopts the innovation technology diffusion theory as the theoretical basis and use LDA topic modeling method to uncover the structure of issue related to mobile payment in Taiwan and explore the trends of Taiwan's mobile payment topics from 2012 to 2018. Collecting the articles related to m-payment as the data resource for the analysis. Based on the probability distribution of topics obtained by the topic model and the information of the time dimension, obtaining the results of the topic intensity distribution over years, visualized by the tendency chart. According to the trend characteristics of each topic, it is classified into three types, namely, upward trend, downward trend and fluctuating type. Then explore the importance of topic elements in each type by case study. This paper concludes by discussing implications for theory, practice and future research.

摘要 I
Abstract II
誌謝詞 III
List of Table VI
1. Introduction 1
2. Theoretical Background 4
2.1 Mobile Payment 4
2.2 Diffusion of Innovation 7
3. Research Method 12
3.1 Latent Dirichlet Allocation Topic Model 12
3.2 The Data 16
4. Analysis 17
4.1 Searching Main Topics 17
4.2 Case Study 23
4.2.1 Upward Type 28
4.2.2 Downward Type 36
4.2.3 Fluctuating type 52
5. Discussion 54
5.1 Conclusion 54
5.2 Implication 55
5.3 Limitation & Future Research 56
References 59

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