作者查詢 / Dboy
作者 Dboy 在 PTT 全部看板的留言(推文), 共1220則
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18F推: B94報到~XD10/28 20:42
30F推: Q______Q11/24 18:03
109F推:好屌的笨事XDDDD06/21 19:23
137F推: 真的是只回重點~08/30 00:48
7F推:看你用了memory.limit()就知道應該是Windows吧~在Mac上~我的03/07 01:03
8F→:RStudio也是一秒就畫出來囉~換電腦吧XDDD03/07 01:03
11F推:plot(xx$變數)~03/07 14:04
5F→:另外感謝ccwang002的說明~我是有你的說明才了解我的問題~進而02/28 10:16
6F→:找到方法~非常謝謝你~02/28 10:17
1F→:剛剛複製貼上沒弄好~Objective_Fiction(theta,...後面有些切02/27 16:54
2F→:到~簡單的說都是一些係數~theta才是我要optimize的對象~02/27 16:55
5F→:會用optim其實是因為跑完後要丟另外一個package~裡面它是用02/28 00:37
6F→:optim在做最佳化~所以就算用constrOptim跑得出來~後面還是會02/28 00:38
7F→:出事....我只是不懂怎樣會出現"矩陣範圍不能是負值"這種error02/28 00:38
2F→:那舉例來說的話~譬如我有個fun函式~裡面包了一個while迴圈~迴01/03 13:00
3F→:圈裡面呼叫了mean~那fun就是第1層~while是第2層~mean就會是第01/03 13:01
4F→:3層囉?01/03 13:01
7F→:喔!? 那換個說法就是~假設我用traceback()發現有A B C三個函01/04 01:53
8F→:式出問題~然後用trace跟quote各放了一個browser()到三個函式01/04 01:54
9F→:中~那當我debug到C時~就是第3層囉?假設A中呼叫B~B中呼叫C~01/04 01:55
2F推:也是這2個月才剛接觸R~不得不說真的很好用!01/03 11:01
2F→:這是MitISEM這個package的要求~它要求要有取log這個動作~所以12/06 11:31
3F→:我才這樣寫~還是說我誤會1樓的意思了?12/06 11:31
4F→:而且optim本來就要求目標函數傳回scalar而不是向量不是嗎?12/06 11:33
5F→:我發現我transpose寫錯地方......感謝各位~12/06 12:27