tag:blogger.com,1999:blog-16607461.post710060325562328432..comments2024-03-28T23:00:58.358+08:00Comments on 布丁布丁吃什麼?: AI能夠告訴你未來?用Weka實作多變項時間序列預測 / Time Series Forecasting with Weka布丁布丁吃布丁http://www.blogger.com/profile/13614721642960940190noreply@blogger.comBlogger19125tag:blogger.com,1999:blog-16607461.post-72099526639866611352022-03-12T00:59:27.214+08:002022-03-12T00:59:27.214+08:00To Dalton,
嗯...
疊加資料:以除了「date」、「timestamp」、「skip...To Dalton,<br /><br />嗯...<br /><br />疊加資料:以除了「date」、「timestamp」、「skip」、「target」之外的任意名稱命名,例如我用「in_semster」來表示是否是在學期中。資料格式必須是類別變項(nominal),也可以是「true」跟「false」這種二元變項,但是Weka在預測的時候會將之視為類別變項。<br /><br />你的資料有「in_semster」這個欄位嗎?<br /><br />請看看這個檔案,跟這個檔案對應的投影片章節:<br />Part 4-2. 1月到8月→預測9月到館人數:CSV輸入資料 (Google試算表)<br />https://docs.google.com/spreadsheets/d/1862Jwj-Zkw43o34RhTxcQWx2F18h3WdvRdDlA8bX3Vg/edit?usp=sharing布丁布丁吃布丁https://www.blogger.com/profile/18000418899714977849noreply@blogger.comtag:blogger.com,1999:blog-16607461.post-75681837616947125732022-03-11T18:10:38.570+08:002022-03-11T18:10:38.570+08:00老師, 因為無法貼圖. "Weka Spreadsheet to ARFF"裡面...老師, 因為無法貼圖. "Weka Spreadsheet to ARFF"裡面的下載疊加變項真的是沒看到.Daltonhttps://www.blogger.com/profile/04408304250749625830noreply@blogger.comtag:blogger.com,1999:blog-16607461.post-22754947812712623032022-03-05T00:06:45.542+08:002022-03-05T00:06:45.542+08:00To Dalton,
https://docs.google.com/presentation/d...To Dalton,<br /><br />https://docs.google.com/presentation/d/1K_-dZEjIuM8ZH-nOcp4uOZEnH5uRnQJVrUz6Ov_FgvA/edit#slide=id.g27585d64c5_10_366<br />在投影片第87頁「2. 試算表轉換ARFF」,右邊網頁往下捲就會看到一樣的內容。<br />您也可以用文字編輯器開啟疊加變項看看裡面的內容。<br /><br />如果您只看投影片的話,那我會建議您實際操作看看。<br />操作有問題再提問。布丁布丁吃布丁https://www.blogger.com/profile/18000418899714977849noreply@blogger.comtag:blogger.com,1999:blog-16607461.post-72876815315118210562022-03-03T00:43:08.449+08:002022-03-03T00:43:08.449+08:00Sorry, 那個 Spreadsheet to ARFF 的介面跟您的講義不一樣, 沒看到Peri...Sorry, 那個 Spreadsheet to ARFF 的介面跟您的講義不一樣, 沒看到Periodics那一部分. 可以繼續解疑嗎? 謝謝!Daltonhttps://www.blogger.com/profile/04408304250749625830noreply@blogger.comtag:blogger.com,1999:blog-16607461.post-461953923172966922022-02-24T16:57:37.607+08:002022-02-24T16:57:37.607+08:00To Dalton,
以這個檔案為例:
Part 4-2. 1月到8月→預測9月到館人數
http...To Dalton,<br /><br />以這個檔案為例:<br />Part 4-2. 1月到8月→預測9月到館人數<br />https://docs.google.com/spreadsheets/d/1862Jwj-Zkw43o34RhTxcQWx2F18h3WdvRdDlA8bX3Vg/edit?usp=sharing<br /><br />https://blogger.googleusercontent.com/img/a/AVvXsEgwG-RyWj6n8Z6WHLCM7NU3EGMlVcp8Z7_28Nj2PJUdbc46tRNtY9c_04nofrXHunIAsJi0mk1WwCPhmEiTnIf95qKKCu9Fpof9ugakWSFBgvpvhQ2OilLNKbUEulYQdajICc9dC8JLhTFB0hOD161KY7duLd4_6dyPQLB2zGgWQpn6dy5oU8M<br />用in_semester裡的TRUE或FALSE來表示。<br /><br />https://blogger.googleusercontent.com/img/a/AVvXsEhG89WNmop7owrBzIc8Y8z0KZDMzQj2ucquohTZFLkXWYAYDfItmdMT6VuM2RDtcRU1wOane2PBEcpdS3a_15IyAsRsAbMgXzvMg4kNtQtszHN5F3_rwI7MoAb0PVdP2uM8LsV7duvfcCltnQ3CJLThd-HtT9kGO_KqWznZsnragNJUejBqRZg<br />網頁程式會根據skip來製作對應的Periodic attributes<br /><br />Periodics data檔案內容像是這個樣子:<br />````<br />time-series-periodics<br />*pre-defined*:AM<br />*pre-defined*:DayOfWeek<br />*pre-defined*:DayOfMonth<br />*pre-defined*:NumDaysInMonth<br />*pre-defined*:Weekend<br />*pre-defined*:Month<br />*pre-defined*:Quarter<br />*custom*:in_semester<br />=2017:jan:*:*:*:1:*:*:*:*/TRUE<br />=2017:jan:*:*:*:2:*:*:*:*/TRUE<br />=2017:jan:*:*:*:3:*:*:*:*/TRUE<br />=2017:jan:*:*:*:4:*:*:*:*/TRUE<br />=2017:jan:*:*:*:5:*:*:*:*/TRUE<br />=2017:jan:*:*:*:6:*:*:*:*/TRUE<br />=2017:jan:*:*:*:7:*:*:*:*/TRUE<br />=2017:jan:*:*:*:8:*:*:*:*/TRUE<br />=2017:jan:*:*:*:9:*:*:*:*/TRUE<br />=2017:jan:*:*:*:10:*:*:*:*/TRUE<br />=2017:jan:*:*:*:11:*:*:*:*/TRUE<br />=2017:jan:*:*:*:12:*:*:*:*/TRUE<br />=2017:jan:*:*:*:13:*:*:*:*/FALSE<br />=2017:jan:*:*:*:14:*:*:*:*/FALSE<br />=2017:jan:*:*:*:15:*:*:*:*/FALSE<br />=2017:jan:*:*:*:16:*:*:*:*/FALSE<br />````<br /><br />手動建立這個文件不太容易,所以我才用程式來處理。布丁布丁吃布丁https://www.blogger.com/profile/18000418899714977849noreply@blogger.comtag:blogger.com,1999:blog-16607461.post-44411134561613336722022-02-22T14:54:12.440+08:002022-02-22T14:54:12.440+08:00關於製作Periodic attributes的 load file 那一段教學有些隱晦...格式應...關於製作Periodic attributes的 load file 那一段教學有些隱晦...格式應該是甚麼樣子呢?Daltonhttps://www.blogger.com/profile/04408304250749625830noreply@blogger.comtag:blogger.com,1999:blog-16607461.post-60729326736813132512022-01-19T10:23:37.909+08:002022-01-19T10:23:37.909+08:00有網友在詢問為什麼Weka裡面沒有出現Forecast頁籤。
根據文中的環境配置一節:
https...有網友在詢問為什麼Weka裡面沒有出現Forecast頁籤。<br /><br />根據文中的環境配置一節:<br />https://blog.pulipuli.info/2017/09/aiweka-time-series-forecasting-with-weka.html#postcataaiweka-time-series-forecasting-with-weka.html0_anchor1<br /><br />這是因為沒有在Package Manager安裝timeSeriesForecasting套件。<br />https://lh3.googleusercontent.com/-eNnjGEbrhNE/Yed1gBjz-HI/AAAAAAAFFvs/9Qvyqy3kfZ0Gk1Dgznulrz0y5Irs_vcJQCNcBGAsYHQ/s1600/20220119-101800-32.png<br /><br />請參考這篇安裝套件的做法來安裝timeseriesForecasting套件。<br />https://blog.pulipuli.info/2017/06/weka-how-to-download-weka-and-install.html#postcataweka-how-to-download-weka-and-install.html0_anchor2布丁布丁吃布丁https://www.blogger.com/profile/18000418899714977849noreply@blogger.comtag:blogger.com,1999:blog-16607461.post-89795081913171383202022-01-16T15:41:58.945+08:002022-01-16T15:41:58.945+08:00最近有網友詢問為什麼原本Weka的疊加變項功能(overlay data)不能用於預測未來。
這是W...最近有網友詢問為什麼原本Weka的疊加變項功能(overlay data)不能用於預測未來。<br />這是Weka的限制。<br /><br />你應該也可以用其他程式語言來達到這個目的。<br />例如多變項時間序列分析:<br />https://bookdown.org/singh_pratap_tejendra/intro_time_series_r/neural-networks-in-time-series-analysis.html布丁布丁吃布丁https://www.blogger.com/profile/18000418899714977849noreply@blogger.comtag:blogger.com,1999:blog-16607461.post-85062331670379983132021-07-26T19:14:56.216+08:002021-07-26T19:14:56.216+08:00To jason,
把演算法的numDecimaPlaces改成0,它在輸出計算結果時,會四捨五入...To jason,<br /><br />把演算法的numDecimaPlaces改成0,它在輸出計算結果時,會四捨五入為整數。<br />https://lh3.googleusercontent.com/-JWKZlHnM42I/YP6YPQYooWI/AAAAAAAFBDk/j7-hAFoDyucfxQw7QQ9oWIq-eeM3DMhPACLcBGAsYHQ/s1600/2021-07-26_190913.png<br /><br />布丁布丁吃布丁https://www.blogger.com/profile/18000418899714977849noreply@blogger.comtag:blogger.com,1999:blog-16607461.post-3486594253709550042021-07-26T19:11:38.217+08:002021-07-26T19:11:38.217+08:00作者已經移除這則留言。布丁布丁吃布丁https://www.blogger.com/profile/18000418899714977849noreply@blogger.comtag:blogger.com,1999:blog-16607461.post-7002801962729666672021-07-25T16:26:24.365+08:002021-07-25T16:26:24.365+08:00我預測值出來有小數可調整為整數嗎
我預測值出來有小數可調整為整數嗎<br />jasonhttps://www.blogger.com/profile/09426503049597013963noreply@blogger.comtag:blogger.com,1999:blog-16607461.post-79598649888387662952020-08-05T11:16:40.752+08:002020-08-05T11:16:40.752+08:00To xiaoluo,
不客氣To xiaoluo,<br /><br />不客氣布丁布丁吃布丁https://www.blogger.com/profile/18000418899714977849noreply@blogger.comtag:blogger.com,1999:blog-16607461.post-44199387472865850622020-08-04T13:15:39.750+08:002020-08-04T13:15:39.750+08:00感謝大大的提供!感謝大大的提供!xiaoluohttps://www.blogger.com/profile/01754996318186948033noreply@blogger.comtag:blogger.com,1999:blog-16607461.post-88314146336009340172020-08-03T17:16:43.978+08:002020-08-03T17:16:43.978+08:00To xiaoluo,
https://www.cs.waikato.ac.nz/ml/weka/...To xiaoluo,<br /><br />https://www.cs.waikato.ac.nz/ml/weka/mooc/dataminingwithweka/<br />可以看作者的線上課程,有提供字幕布丁布丁吃布丁https://www.blogger.com/profile/18000418899714977849noreply@blogger.comtag:blogger.com,1999:blog-16607461.post-83825151545255221232020-08-01T18:21:58.960+08:002020-08-01T18:21:58.960+08:00大大您好,
您所推薦的書籍"王者歸來:WEKA機器學習與大數據聖經"似乎已經絕版...大大您好,<br />您所推薦的書籍"王者歸來:WEKA機器學習與大數據聖經"似乎已經絕版,還有其他的書籍可以介紹嗎?謝謝!xiaoluohttps://www.blogger.com/profile/01754996318186948033noreply@blogger.comtag:blogger.com,1999:blog-16607461.post-65701664424442902172020-05-30T19:03:40.977+08:002020-05-30T19:03:40.977+08:00To linlin,
Oops
我忘記早期做的工具沒有支援ODS了
那最簡單的方式,就是乖乖把數...To linlin,<br /><br />Oops<br />我忘記早期做的工具沒有支援ODS了<br /><br />那最簡單的方式,就是乖乖把數字換成字串,然後再來處理吧<br />有缺失值也會有影響沒錯布丁布丁吃布丁https://www.blogger.com/profile/18000418899714977849noreply@blogger.comtag:blogger.com,1999:blog-16607461.post-30316957410873019802020-05-30T16:25:28.200+08:002020-05-30T16:25:28.200+08:00布丁您好:
了解!謝謝您的回覆,我剛剛試過了上傳ODS檔沒辦法用試算表轉換工具下載訓練、略過、疊加資...布丁您好:<br />了解!謝謝您的回覆,我剛剛試過了上傳ODS檔沒辦法用試算表轉換工具下載訓練、略過、疊加資料,因為上傳後就沒動靜了。另外想請問若是疊加資料中有部分遺漏值是否也會影響呢?linlinhttps://www.blogger.com/profile/14413291659122497826noreply@blogger.comtag:blogger.com,1999:blog-16607461.post-91144585616946937022020-05-29T19:45:32.292+08:002020-05-29T19:45:32.292+08:00To linlin,
Weka預設會把數字當成連續數值類型
所以你必須要把「001」改成「_001...To linlin,<br /><br />Weka預設會把數字當成連續數值類型<br />所以你必須要把「001」改成「_001」,讓它看起來不是數字<br />同樣地,性別也不能用1跟2<br /><br />看起來你是用CSV格式開啟<br />我建議你把它改成ODS格式,整理好之後再用Weka開啟<br />要記得安裝WekaODF套件布丁布丁吃布丁https://www.blogger.com/profile/18000418899714977849noreply@blogger.comtag:blogger.com,1999:blog-16607461.post-78377299595216766712020-05-29T09:29:55.854+08:002020-05-29T09:29:55.854+08:00您好,想請教您疊加資料只能是類別變項,如果我的類別變項是以數值代表這樣可以嗎?例如說,人員編號001...您好,想請教您疊加資料只能是類別變項,如果我的類別變項是以數值代表這樣可以嗎?例如說,人員編號001、002或是房號01、02又或者是性別0、1...這類可以嗎?這兩天試著跑自己的資料,光是要開啟train data就卡關了,實在找不出是哪裡出問題,會一直出現nominal value not declared in header ,read Token[M3AO],line 19的提示,能否指點可能是哪個部分出錯了呢?(哭)謝謝您~~<br /><br />linlinhttps://www.blogger.com/profile/14413291659122497826noreply@blogger.com