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    # 輿論分析量測電視劇觀看喜好的風向 Public opinion monitoring for TV series - 魏聖倫 Kevin Wei {%hackmd DR5p-QuLTwylJM8bYjJp1Q %} # About me - 2014 ACM: 命名實體辨識與分歧異挑戰 (SIGIR Entity Recognition and Disambiguation Challenge) - 搜尋*王建民*時不知道是map到哪個人 - 搜尋*王建民 洋基*時就可以確定 - 2016 COLING: NL2KB Resource - 偵測實體之間的關係 - KKStream Applied Data Science Team - ccClub Python 讀書會 in NTU since 2016 Fall # KKTV - 現場聽過的人7成 - 現場使用過OTT(over-the-top) 約4成 - 版權問題 - OTT業者需要取捨 - 內部data分析喜好綠? - 內部data可能有問題,可能與觀影民眾的分布不同 - 改用外部data - 分析論壇熱度? - 期待度低可是上映後很受歡迎 (黑馬) - 期待度高可是上映後不受歡迎 (地雷) - 期待度高,上映後也很熱門 # 流程 1. 收集與論資料(Data Collection) - collect forum posts (如PTT) 2. 整理資料,分析出metadata,如該篇文章代表的劇名(Data Process) - [Named-entity Recognition algorithm](https://en.wikipedia.org/wiki/Named-entity_recognition) 簡稱NER - 預先定義好的category,稱為entity - 如洋基隊是organization - 如洛杉磯是Location - 電視劇標題的 NER - 目標:從標題找到 Entity Name 來確認文章主體 - Google Natural Language API 測試? - **逃避可**恥但有用ep9 劇組請加油 - 標出了*逃避可*為Other category - 對電視劇名稱效果不好(因相較"體育",非熱門領域) - 字串比對? - 王牌大律師 vs 勝者即是正義 vs Legal High - 月薪嬌妻 vs 逃避雖可恥但有用 (不同翻譯) - 逃恥 vs 月薪 (不同縮寫) - 逃避可恥但有用 vs 逃避雖然可恥但有用 (typos) - Typos:從使用者搜尋紀錄來看 * 經常請吃飯的漂亮姊姊 * 漂亮姐姐經常請吃飯 * 經常請你吃飯的漂亮姐姐 * 經常請我吃飯的漂亮姐姐 * 經常吃飯的漂亮姐姐 * 請我吃飯的漂亮姐姐 * 每天請吃飯的漂亮姊姊 * 請漂亮姐姐吃飯 - Our NER Algorithm * 理想:解決上述所有問題 * 觀察:找出規律性 * 有書名號的標題可以拆出劇名 * 使用語言上先天的特性來找出重點(Language Feature) * 尋找與標題相關的內容,而且內容有書名號 * 把文章標題拿去查google,可以發現內容有書名號 * 將從google中取得的數個term(含count數) map 到 wikipedia,看會指向哪個劇名,最終再基於count數進行多數決 - 問題 - - [新聞] 新垣結衣堺雅人續集戰開打《月薪》恐讓 - <<月薪>> -> 工資 (knowledge domain的重要性) - 當文字不夠特別時,在wiki有可能錯誤比對,就需要換Resource做比對 - 思考 - wikipedia不是好的查詢term的工具 - 改用偶像資料庫網站, 影評網站 - 盡量把垃圾移除 - 如單集的感想 - NER Evaluation - Human label ground truth from PTT KoreaDrama - 2018四月共296篇 - 準確率 76% - Code 3. 不同觀點切入做資料分析(Data Analysis) - 應用數據 - 每周產生報表 - 可看每個電視劇的文章數,爆文數、推噓文數 - 時間關係圖表 - 正在上映時討論熱絡,剛放映結束就冷了 - 放映結束後還繼續維持討論熱度的可能是好選擇 ## 結論 - 監視輿論來獲得社交資訊,如使用者偏好 - Developed a public opinion monitoring system to collect social information - 結合平台上的使用者行為來幫助 OTT 決策要買什麼電視劇 - Combined them with end-user behavior in KKTV to facilitate decision making for content team and marketing team - 不需要電視劇名稱清單 - Designed an entity recognition algorithm to detect title names for TV series, reaching 76% accuracy without using existing drama list. ## 工商服務 ps. ## 提問 - 有沒有要使用machine learning? - 這是多分類問題 - 目前的方式已經足夠 - 不認為machine learning提高的辨識率值得將要投入的資源 - 想要集中資源在backend service - 有沒有辨識該留言的情緒?如正面留言,負面流言 - 正在做,目前詳細內容是機密 - 大部分內容提到演員會用角色名 - 除了少部分例外,如:結衣我老婆 - 正在做角色與演員對應資訊 ## 相關文章 * [看劇「完食率」:KKTV 提高營運效率的新數據武器! \- INSIDE 硬塞的網路趨勢觀察](https://www.inside.com.tw/2018/05/17/kktv-view-achievement-rate) * [輿論分析量測電視劇觀看喜好的風向 – KKStream – Medium](https://medium.com/kkstream/%E8%BC%BF%E8%AB%96%E5%88%86%E6%9E%90%E9%87%8F%E6%B8%AC%E9%9B%BB%E8%A6%96%E5%8A%87%E8%A7%80%E7%9C%8B%E5%96%9C%E5%A5%BD%E7%9A%84%E9%A2%A8%E5%90%91-c9c4993f959d) ###### tags: `pycontw2018`

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