作者查詢 / sarsman
作者 sarsman 在 PTT [ Grad-ProbAsk ] 看板的留言(推文), 共410則
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1F推: 這題是2+3的情況01/09 23:33
2F→: d考2,e考301/09 23:36
3F→: Ax=b無解時b不會在R(A)中,可想成A的行向量無法組合出b01/09 23:39
4F→: 唯一解跟無限多解時都會在R(A)中,唯一解的情況是行向量01/09 23:41
5F→: 間不相依,所以組合方式唯一01/09 23:41
6F→: c不是least square solution,而是b在R(A)中的投影向量01/09 23:44
7F→: least square solution可以想成是形成這個投影的線性組合01/09 23:46
8F→: 因為matrix A行向量相依導致least square solution無限多01/09 23:48
9F→: 解,所以才要求minimal solution01/09 23:48
10F推: 是指這個線性方程組的解沒錯啊xd01/10 00:03
11F→: 只是least square solution在矩陣A的行向量相依時也會無01/10 00:04
12F→: 限多解01/10 00:04
13F推: 沒錯,這個方程無解;無限多解的不是這個方程組的解,而01/10 00:13
14F→: 是方程組的least square solution01/10 00:13
15F→: d小題考case 2求近似解;e小題則是用d小題的近似解算出投01/10 00:20
16F→: 影向量c,再考case 3求極小解01/10 00:20
4F推: 將資料置於各cylinder同時讀取的磁區當中應該也可以01/09 00:08
1F推: 5.a 題目的意思應該是multithread process只有一個pc,但01/08 01:05
2F→: 就像你說的thread都有自己的pc所以錯01/08 01:05
3F推: 7是iNode01/08 01:06
4F推: 0.de 連續配置兩種access方式都支援,且sequential acces01/08 01:11
5F→: s因為不用讀pointer的關係所以比Link配置更具效率01/08 01:11
6F→: *9.de01/08 01:12
2F推: 7-A 學生ID應該是唯一的?01/07 23:41
3F→: 10-B為何not a graph?@@01/07 23:46
12F推: 32我是理解成再插入一個元素需要1/(1-n/m)的空間(cost)01/06 22:16
14F推: 題目有假設是uniform hash,所以應該不用擔心碰撞問題01/06 22:31
29F→: 原來是等比數列,謝謝n大!01/07 22:05
2F推: 我也覺得是d01/04 23:53
3F→: 第四題的c小題是biconnected的現實應用那題嗎01/04 23:56
4F→: 我是寫可以用來分析傳輸網路的可靠性,若網路具有biconne01/05 00:00
5F→: cted性質,則即使一個節點壞掉也能保持其他節點的連通01/05 00:00
10F推: 照著題目的要求畫就有答案01/04 14:05
2F推: 題目是指TLB搭配n-level paging01/02 11:20
3F→: 分層的是page table01/02 11:23
20F推: 台大的題目常常難度差異很大01/01 22:57
21F→: 可是難題易題配分都差不多01/01 22:59
1F推: heap是complete binary tree01/01 01:11
2F→: 最少元素個數是2^(h-1),最多(2^h)-101/01 01:13
3F→: 新年快樂xd01/01 01:15
14F推: 不同學校的定義不太一樣,做考古題時可以觀察一下01/03 22:24
15F→: 如果不是選擇或是非就假設囉01/03 22:25