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    ## Fintech 課程教材勘誤 (Course Materials Errata) - 若同學們發覺我的教材有任何錯誤,麻煩在此提出。 If you find any errors in my teaching materials, please report them here. - 請留下姓名及學號,以便加分。 Please leave your name and student ID number for additional credit. #### Example of each entry 1. 姓名、學號、日期(如 2024/10/23) - 教材主題: - 錯誤發生頁面: - 應如何修正: ### 2025 年的勘誤資料 ───────────────────────────────────────── 1. 姓名: 張祐誠、學號: M11415015、2025/09/10 - 教材主題:2025/09/17 Pre-class reading - 基本金融知識:CMoney: 為什麼 EPS(每股盈餘)不是越高越好?一分鐘帶你搞懂 股價、EPS、本益比的關係(EPS & 本益比)[網頁連結](https://www.cmoney.tw/notes/note-detail.aspx?nid=7095) - 錯誤發生頁面: 跑圖![未命名](https://hackmd.io/_uploads/Sy6Nx_Rqlx.png) - 應如何修正: ![image](https://hackmd.io/_uploads/Hk_nxuRqel.png) 參考資料:[網頁連結](https://fmstudio.blog/what-is-eps-earnings-per-share-guide-2025/) 2.姓名:孫源智、學號:R14944059、日期(2025/09/20) 教材主題:Jensen's inequality 錯誤發生頁面: ![1000006597](https://hackmd.io/_uploads/SJMC9B3oee.jpg) xyz=16有誤,後續得出x,y,z 也有出入 應如何修正: xyz應改為x^2 y^2 z^2=16,計算出來的應為x=2,y=2與z=1 :::info - Roger: 確認錯誤,並已經重新錄影 ::: 3. 姓名: 李沅錡、R13944007、2025/09/28 - 教材主題: - 2025/09/17 c. MA 技術指標 - 錯誤發生頁面: - P. 15 ![image](https://hackmd.io/_uploads/S1FIRX_3lx.png) - 應如何修正: - 買點與賣點 - 黃金交叉:短期均線 由下往上突破 長期均線 ➔ 買進 - E.g., 5MA 由下往上突破 20MA - 死亡交叉:短期均線 由上往下跌破 長期均線 ➔ 賣出 - E.g., 5MA 由上往下跌破 20MA 4. 姓名: 陳璿修、B11902174、2025/10/2 - 教材主題: - 2025/10/1 密碼貨幣與區塊鏈 (1) - 錯誤發生頁面: - 課程網頁,現在兩個連結(Pre-class reading 和 Optional)連到相同 slide (非上課教材),不確定是否為正常現象 ───────────────────────────────────────── 1. 姓名:張祐誠、學號: M11415015、2025/12/03 - 教材主題:PCA-exercise, 2022/01/12 - 錯誤發生頁面: 13:07 處 $X^TX$ 的 運算順序錯誤 - 應如何修正: $XX^T$ 才可以得到2*2大小的矩陣 ────────────────────────────────── 6. 姓名: 馬玉錚、Q36141260、2025/12/12 * 教材主題:Performance indices-Ranking, 2025/10/17 * 錯誤發生頁面:第12頁Exercise: mAP * 應如何修正:分母應該改成除以2 ![螢幕擷取畫面 2025-12-12 115616](https://hackmd.io/_uploads/SJBqzGFzWx.png) ────────────────────────────────── 7. 姓名: 黃奕達、J114261103、2025/12/14 * 教材主題:考古題 (Math Basics & Machine Learning) * 錯誤發生頁面:Optimization部分第6題 * 應如何修正:這是simulated annealing的問題,但題目誤植為 genetic algorithms,應修正為 simulated annealing (SA) ────────────────────────────────── 8. 姓名: 黃奕達、J114261103、2025/12/16 * 教材主題:Performance Indices for Classification * 錯誤發生頁面:第5頁 False positive rate * 應如何修正: miss rate 不是 FPR 的別名,業界一般所說 miss rate 指的是 FNR 參考來源: 維基百科 https://en.wikipedia.org/wiki/Confusion_matrix ────────────────────────────────── 9. 姓名:  鍾鎮嶸、R13944064、2025/12/17 * 教材主題:2025/09/10 Pre-class reading Compounding * 錯誤發生頁面:十五頁之後,右下角分子超過分母 * 應如何修正: 不確定教授是否是用latex製作ppt,可以試試看各種page numbering的改法 參考來源: https://www.overleaf.com/learn/latex/Page_numbering ![image](https://hackmd.io/_uploads/Sk24NM1X-g.png) ────────────────────────────────── 10. 郭奕宏、111504008、2025/12/17 - 教材主題:PCA-exercise - 錯誤發生頁面:p.23 ![image](https://hackmd.io/_uploads/S1dQMLkmWx.png) - 應如何修正:老師在算完 $λ_1=16$ 時,口頭說最大 variance 是 $16$。但他應該要再除 n-1,投影後的 $\mathrm{Var}(X) = \frac{λ_1}{n-1}$,這一題的正確答案應為 $\mathrm{Var}(X) = \frac{λ_1}{n-1} = \frac{16}{3}$。 ────────────────────────────────── 11. 王興皓、109101083、2025/12/26 - 教材主題:Feature selection - 錯誤發生頁面:https://www.youtube.com/watch?v=h2DJbzsYSSs&list=PLwb75-SEfInnM9tPmiIU3B_R7CXhEvbKL&index=24 影片18:03-18:06 ![image](https://hackmd.io/_uploads/S1nP68smZx.png) - 應如何修正: Feature normalization 應該是減掉mean除以標準差 ────────────────────────────────── 12.王興皓、109101083、2025/12/26 - 教材主題:Feature selection,2025/10/29 - 錯誤發生頁面: 簡報第12頁 No. of CV required for selecting up to m features in a dataset of d features的Exhaustive search ![螢幕擷取畫面 2025-12-26 084113](https://hackmd.io/_uploads/BJzHaIoXbg.png) - 應如何修正: 因為是最多選m個特徵,故應該要跟One-pass ranking一樣,要評估特徵組合數≤m的特徵組合,故為 ![image](https://hackmd.io/_uploads/S148pIo7-g.png) 。 ### 2024 年的勘誤資料 ───────────────────────────────────────── 1. 姓名: 簡茂芳、學號: R13922192、2024/11/12 - 教材主題:Sharpe ratio - 錯誤發生頁面: Sharpe ratio powerpoint 的第五頁 ![螢幕擷取畫面 2024-11-12 140542](https://hackmd.io/_uploads/SyfMfOxfye.png) - 應如何修正: $𝑌_1$ and $𝑌_2$ have the same mean $2𝜇_𝑥$ :::info - Roger: 確認錯誤,並已經修正 ::: ────────────────────────────────── 2. 楊子平、r11922028、2024/12/01 - 教材主題: MLP & DNN - 錯誤發生頁面:28 - ![image](https://hackmd.io/_uploads/ByFJdqtX1e.png) - 老師上課的說法是 $x_1$ 和 $x_2$ 因為是 $\pm 1$ ,因此平方之後就等於沒有。但是回去看第4頁投影片可知 $x_1$ 和 $x_2$ 是頭髮長度和聲音頻率,是為連續數值,因此不會自動消去。 - 應如何修正:與最後一行類似,需補上 $x_1^2$ 和 $x_2^2$ :::info - Roger: 確認錯誤,但我找不到原來的投影片 :( ::: ───────────────────────────────────────── 3. 楊子平、r11922028、2024/12/01 - 教材主題: K-means Clustering - 錯誤發生頁面:8,9 - ![image](https://hackmd.io/_uploads/H1vLG-qQJe.png) - ![image](https://hackmd.io/_uploads/rk-HzZ5mJe.png) - 應如何修正:$\forall A$ 與 $\forall C$ 應互換 :::info - Roger: 錯誤不成立,保持原文 ::: ───────────────────────────────────────── 4. 楊子平、r11922028、2024/12/01 - 教材主題: K-means Clustering - 錯誤發生頁面:13 - ![image](https://hackmd.io/_uploads/S1-sf-c7Je.png) - 應如何修正:正確拼法為 Taxicab :::info - Roger: 確認錯誤,並已經修正 ::: ───────────────────────────────────────── 5. 戴妤珊、d10943018、2024/12/02 - 教材主題: PCA-exercise - 錯誤發生頁面:23 - ![image](https://hackmd.io/_uploads/BytnogimJl.png) - 應如何修正:$X^TX$ 的 $X$ 第2行第2列的值應為-1不是-2 :::info - Roger: 確認錯誤,但因為是錄影的手寫,我不知道要怎麼改 :( ::: ───────────────────────────────────────── 6. 姓名: 簡茂芳、學號: R13922192、2024/12/4 - 教材主題:K-means Clustering - 錯誤發生頁面: K-means Clustering powerpoint 的第 3 頁 ![image](https://hackmd.io/_uploads/ByrcrKamkx.png) - 應如何修正:Example of k-means clustering in 2D 而非 Example of k-meals :::info - Roger: 確認錯誤,並已經修正 ::: ───────────────────────────────────────── 7. 姓名:李誌軒 學號:113071603 2024/12/7 教材:fintech 發生錯誤:最後一題 ![IMG_1078](https://hackmd.io/_uploads/SJBnuhbN1l.jpg) 應如何修正:poission的pdf分母應改成X!(階層) :::info - Roger: 確認錯誤,並已經修正 ::: ───────────────────────────────────────── 8. 謝秉諺、R13922079、2024/12/09 - 教材主題: Portfolio Optimization - 錯誤發生頁面:9 ![image](https://hackmd.io/_uploads/r1PZyVV41l.png) - 應如何修正:應為 return :::info - Roger: 確認錯誤,並已經修正 ::: ───────────────────────────────────────── 9. 吳克洋、R13922A12、2024/12/11 - 教材主題:Portfolio Optimization - 錯誤發生頁面:12 ![圖片](https://hackmd.io/_uploads/SkQd8cINkg.png) - 應如何修正:應為 Variance :::info - Roger: 確認拼字錯誤,並已經修正 ::: ───────────────────────────────────────── 10. 俞鑫昌、M123040021、2024/12/11 - 教材主題:Downhill Simplex Search - 錯誤發生頁面:11 ![image](https://hackmd.io/_uploads/rJMRxRLVkg.png) - 應如何修正:應為 X~2~, ..., X~n+1~ :::info - Roger: 錯誤不成立,保持原文 ::: ───────────────────────────────────────── 11. 姓名: 簡茂芳、學號: R13922192、2024/12/13 - 教材主題:Math Basics & Machine learning/Optimization - 錯誤發生頁面: ![image](https://hackmd.io/_uploads/Bkwoy8FEkg.png) About SA 但為 GA 的題目 - 應如何修正: 提供正確的標籤或題目 :::info - Roger: 確認錯誤,並已經修正 ::: ───────────────────────────────────────── 12. 張婕妤、B09501112、2024/12/14 - 教材主題:PCA-exercise - 錯誤發生頁面:p.23![截圖 2024-12-14 下午1.27.30](https://hackmd.io/_uploads/r15vP99E1x.png) - 應如何修正:老師在算完 $λ_1=16$ 時,口頭說 variance 是 $64$。但如果把此題的 $X$ 視為母體,投影後的 $\mathrm{Var}(X) = \frac{λ_1}{n}$,這一題的正確答案應為 $\mathrm{Var}(X) = \frac{λ_1}{n} = \frac{16}{4}=4$。 ───────────────────────────────────────── 13. 俞鑫昌、M123040021、2024/12/15 - 教材主題:Gradient descent - 錯誤發生頁面:13 ![image](https://hackmd.io/_uploads/H1zjXzhEkl.png) - 應如何修正:non-differentiable :::info - Roger: 確認拼字錯誤,並已經修正 ::: ───────────────────────────────────────── 14. 俞鑫昌、M123040021、2024/12/15 - 教材主題:Sample tests : Math Basics & Machine learning - 錯誤發生頁面:Optimization 3~5 題 ![image](https://hackmd.io/_uploads/Byxi3Gh4Jx.png) - 應如何修正:~~Lagrange multiplers~~ → Lagrange multipliers :::info - Roger: 確認拼字錯誤,並已經修正 ::: ───────────────────────────────────────── 15. 王承郁、P13922005、2024/12/15 - 教材主題:Sample tests : [Math Basics & Machine learning](http://mirlab.org/jang/books/dcpr/quiz/list-AM-GM%20inequality_Clustering_DP_Dataset_Document%20classification_Feature%20selection_Gradient%20descent_MLE_MLP_Math%20basics_Optimization_PCA_Performance%20evaluation_Performance%20index_Random%20variables.asp) - 錯誤發生頁面:Performance index 第 7 題 b.選項 ![截圖 2024-12-15 下午5.59.55](https://hackmd.io/_uploads/Bkqo_mnN1g.png) - 應如何修正:reacall => recall :::info - Roger: 確認拼字錯誤,並已經修正 ::: ───────────────────────────────────────── 16. 王承郁、P13922005、2024/12/15 - 教材主題:Sample tests : [Fintech](http://mirlab.org/jang/books/fintech/quiz/list.asp.html) - 錯誤發生頁面:Portfolio optimization第1題敘述 ![截圖 2024-12-15 下午8.25.38](https://hackmd.io/_uploads/B1WC9H24kg.png) - 應如何修正:weigthing => weighting ───────────────────────────────────────── 17. 王承郁、P13922005、2024/12/15 - 教材主題:Sample tests : [Fintech](http://mirlab.org/jang/books/fintech/quiz/list.asp.html) - 錯誤發生頁面:Portfolio optimization第13題敘述 ![截圖 2024-12-15 下午8.28.18](https://hackmd.io/_uploads/By_OsH3NJx.png) - 應如何修正:portfolia => portfolio ───────────────────────────────────────── 18. 王承郁、P13922005、2024/12/15 - 教材主題:Sample tests : [Math Basics & Machine](http://mirlab.org/jang/books/dcpr/quiz/list-AM-GM%20inequality_Clustering_DP_Dataset_Document%20classification_Feature%20selection_Gradient%20descent_MLE_MLP_Math%20basics_Optimization_PCA_Performance%20evaluation_Performance%20index_Random%20variables.asp) - 錯誤發生頁面:Clustering第1題敘述 ![截圖 2024-12-15 下午9.35.53](https://hackmd.io/_uploads/By6HiI3NJg.png) - 應如何修正: - a. intial set =>initial set - e. unsuervised => unsupervised ───────────────────────────────────────── 19. 俞鑫昌、M123040021、2024/12/15 - 教材主題:Portfolio optimization Youtube 講解影片 - 錯誤發生頁面:[Portfolio optimization Youtube 影片](https://www.youtube.com/watch?v=1TWHTIYutt0) ![image](https://hackmd.io/_uploads/SySlSv341e.png) - 應如何修正:~~Portofolio~~ → Portfolio ───────────────────────────────────────── 20. 王承郁、P13922005、2024/12/16 - 教材主題:Sample tests : [Math Basics & Machine](http://mirlab.org/jang/books/dcpr/quiz/list-AM-GM%20inequality_Clustering_DP_Dataset_Document%20classification_Feature%20selection_Gradient%20descent_MLE_MLP_Math%20basics_Optimization_PCA_Performance%20evaluation_Performance%20index_Random%20variables.asp) - 錯誤發生頁面:MLE第9題敘述 ![截圖 2024-12-16 上午1.19.32](https://hackmd.io/_uploads/rkJpyq2Nkg.png) - 應如何修正:Poission => Poisson ───────────────────────────────────────── 21. 王承郁、P13922005、2024/12/15 - 教材主題:Sample tests : [Fintech](http://mirlab.org/jang/books/fintech/quiz/list.asp.html) - 錯誤發生頁面:Portfolio optimization第6題敘述 ![截圖 2024-12-16 上午1.38.24](https://hackmd.io/_uploads/H1gQNq3Nye.png) - 應如何修正:Largange => Lagrange ───────────────────────────────────────── 22. 賴禹宏、R12522728、2024/12/16 - 教材主題:Sample tests : [Mortgage](http://mirlab.org/jang/books/fintech/quiz/list.asp.html) - 錯誤發生頁面:Mortgage標題、第一題、第二題的小標 ![image](https://hackmd.io/_uploads/HkVRiXp4yx.png) - 應如何修正:Morgage => Mortgage ───────────────────────────────────────── 23. 高永杰、R13922186、2024/12/16 - 教材主題:Feature selection - 錯誤發生頁面:p.6 ![image](https://hackmd.io/_uploads/Sk0Onw6Ekx.png) - 應如何修正:2d-1 => d ───────────────────────────────────────── 24. 賴禹宏、R12522728、2024/12/16 - 教材主題:Sample tests : [DP](http://mirlab.org/jang/books/dcpr/quiz/list-AM-GM%20inequality_DP_Dataset_Document%20classification_Feature%20selection_Gradient%20descent_MLE_MLP_Math%20basics_Optimization_Performance%20evaluation_Performance%20index_Random%20variables.asp.html) - 錯誤發生頁面:DP b選項 ![image](https://hackmd.io/_uploads/BkvMQcpVJx.png) - 應如何修正:proglem => problem ───────────────────────────────────────── 25. 郭秉翔、B11701242、2024/12/16 - 教材主題:Sample tests : [IRR](http://mirlab.org/jang/books/fintech/quiz/list.asp.html) - 錯誤發生頁面:IRR computing 第三題 ![螢幕擷取畫面 2024-12-16 215209](https://hackmd.io/_uploads/r1Dogn6VJl.png) - 應如何修正:thant => than ───────────────────────────────────────── 26. 高永杰、R13922186、2024/12/16 - 教材主題: Portfolio Optimization - 錯誤發生頁面:8 ![image](https://hackmd.io/_uploads/H1EKY2CVJg.png) - 應如何修正:Maxmimize => Maximize 27. 張紋瑜、M123040016、2024/12/17 - 教材主題: PCA - 錯誤發生頁面:16 ![image](https://hackmd.io/_uploads/rJraxW1HJg.png) - 應如何修正:leaning => learning ───────────────────────────────────────── 28. 郭秉翔、B11701242、2024/12/17 - 教材主題:Sample tests : [MLE](http://mirlab.org/jang/books/dcpr/quiz/list-AM-GM%20inequality_Clustering_DP_Dataset_Document%20classification_Feature%20selection_Gradient%20descent_MLE_MLP_Math%20basics_Optimization_PCA_Performance%20evaluation_Performance%20index_Random%20variables.asp) - 錯誤發生頁面:MLE部分的8~11題 ![螢幕擷取畫面 2024-12-17 222303](https://hackmd.io/_uploads/H1QRtWJrJl.png) - 應如何修正:discribed => described ───────────────────────────────────────── 29. R13944024、2024/12/18 - 教材主題:Sample tests : [Backpropagation (BP) for adaptive networks](https://www.youtube.com/watch?v=V3q1NpjUuxM&ab_channel=%E5%BC%B5%E6%99%BA%E6%98%9F%2CRogerJang) - 錯誤發生頁面: ![image](https://hackmd.io/_uploads/HyPkiklrkx.png) - 應如何修正: $$ \frac{\partial y}{\partial \alpha_{11}} = y(1 - y) \cdot x_1. $$ ─────────────────────────────────────────

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