根據相機市場產業調查報告，因疫情影響造成相機市場在2020年跌至谷底，原因是疫情期間各國的鎖國政策，造成群眾無法外出旅遊進而影響到相機市場，並在疫情得到控制後，相機市場持續回暖、逐漸上升。消費者在選購相機的過程中容易受到口碑影響，且消費者因為自身的照相偏好與拍攝需求，在最終的選購上有所不同，也有消費者選擇手機取代照相機進行攝影，因此若能分析購買照相機之消費者的意見，企業就可加強區隔照相機與手機攝影之功能，增加潛在消費者與穩固現有消費者在專業照相領域的市場與口碑。
本研究旨在發展出一種整合性模型，藉由模型中的統計與計算程式，協助相機廠商快速找出疫情後相機市場的成功因素，整合性模型除了可進行一般的主題建模，利用調整模型內的參數，進行更深度的評論分析與研究，針對台灣兩大論壇ptt.cc與巴哈姆特中的相機討論版，共蒐集65921筆網友的留言進行分類，利用可信度分析針對個別網友的TF-IDF進行加權處理，找出高可信度網友的相機功能偏好。研究結果顯示，使用可信度分析在留言聚類任務中可改進約6%的聚類成效，能加強主題建模的精確程度，而評論中有兩的隱含主題，顯示相機產業的成功因素分別是「暗光拍攝 」、「對焦速度」兩個主要面向。使用本研究發展之整合性模型能準確的將顧客分群，且可根據需求更改加權變數進行更不同的分析面向，提供企業有價值的參考資訊。

After the pandemic was brought under control, the camera market gradually bounced back and its growth rate was much higher than expected. Since the people were getting used to on-line shopping during the pandemic, word-of-mouth could affect the sales volume significantly. Compared to smartphone, several features of camera had attracted the consumers to buy cameras for photography purpose. The intent of this work is to develop a framework in order to analyze the on-line opinions of consumers to identify the key features of popular cameras which differentiate them in the professional photography domain.
This study has developed an integrated model, which adopts credibility analysis and classification algorithms, to identify the key features of camera based on a total of 65,921 comments from camera discussion boards on two major forums - ptt.cc and Bahamut. Besides general topic modeling, in-depth review analysis and TF-IDF weighting analysis for individual users were applied. The research results show the camera feature preferences of highly credible users. The use of credibility analysis further improved clustering performance by about 6% in the comment clustering task which enhancing the precision of topic modeling. Two themes emerged from the reviews analysis: "low-light photography" and "focus speed." Through the proposed model developed in this study, manufacturers could develop cameras that could better meet the needs of professional photography.

中文文獻：
簡惠卿（2017）。智慧型手機照相功能影響消費意願關鍵因素之研究。醒吾科技大學行銷與流通管理系所碩士論文，新北市。
郭鑫華（2007）。照相手機與數位相機廠商競合策略之研究。國立臺灣大學工業工程學研究所碩士論文，台北市。
網路資料：
工研院 產科國際所https://ieknet.iek.org.tw/
經濟部加工出口區管理處https://www.epza.gov.tw/info.aspx?pageid=a875323238688970&cid=6f4f5cd47bdb2913
日本經濟新聞中文版https://zh.cn.nikkei.com/industry/itelectric-appliance/51289-2023-02-03-04-51-03.html
日本相機影像器材工業協會(CIPA)CIPA - Camera & Imaging Products Association: Statistics
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