空間規劃思潮之演變，轉向討論民眾參與規劃之功能與重要性，除民眾可充分獲得規劃資訊，進而與規劃者溝通外，也為民眾提供更多參與機會，創造願景實踐的可能性。臺灣方面雖有透過制定相關法規來保障民眾參與規劃之權利，然而其仍具有參與時機過晚且不足、參與門檻高，以及陳情意見多反應私利，無法為都市整體法發展提供有效建議等問題。而近年來由於網路以及通訊技術之發展，產生了與以往不同之參與形式，透過網路或移動設備之民眾參與，克服了傳統參與形式之短處，降低了民眾參與門檻，涵蓋更廣泛之參與者，且所獲取之數據更能突顯在地知識，內容上為著重廣泛的社會與環境目標，更能回應都市計畫重視公益性之內涵。此外，文字探勘於處理大量且即時數據上具有其優勢與客觀性，近年來開始大量運用於社會人文學領域，並於都市議題研究中主要運用於都市治理與意見挖掘。故本研究欲從社群媒體作為民眾參與意見數據源之角度切入，運用文字探勘分析法檢視都市計畫陳情意見與社群媒體民眾意見等兩種不同意見來源，對於關注議題之廣度、公私益性，對議題態度等內容特性差異，討論多元民眾參與來源之可能。
經由文字探勘結果發現，於討論議題上，陳情意見內容較偏重於個人土地利益與法律權益問題，談論主題間差異程度並未如社群媒體意見高；而社群媒體討論議題則較為廣泛，各主題間差異性大，較易判別各主題所關注重點，除了涵蓋了關於個人土地利益、法律權益等個人利益外，討論了環境災害、歷史文化等議題也是社群媒體意見所關注之焦點。情感分析方面，兩種意見來源對於個人權益之損失皆呈負向情緒表達，於正向情緒部份為民眾認為應積極爭取獲得之權利，然而社群媒體更另外關注了都市計劃對於城市未來發展之期盼。

The purpose of this study is to explore the differences in the characteristics of the issues concerned by people's opinions and social media opinions in urban planning and to explain the difference in the breadth of issues and public and private interests between the two to discuss the possibility of incorporating diverse public opinion sources. The research uses topic modeling and sentiment analysis in the text mining method to mine opinion characteristics. The research results found that the content of people's opinions is more focused on the private interests of personal land, while the social media opinions are more concerned about the issues. It is more extensive and focuses more on the city's overall social and environmental development. The research conclusions are: (1) The content characteristics of the submitted opinions reflect the behavior of individuals who place more emphasis on their land interests in the research results; (2) The social media opinions in the research results present a multi-level and more overall public welfare. (3) There is a gap between the content characteristics of submitted opinions and social media opinions due to the logic of collective action and the type of participation.

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