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作者 ssccg 在 PTT [ Grad-ProbAsk ] 看板的留言(推文), 共186則
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2F→:along γ是指在γ的方向上,是 α+β 投影到 γ上01/11 11:38
6F→:fork是unix系統的system call吧,不能說算C01/11 11:40
6F→:不應該兩個分開解,求出U後直接由U得到V才對12/30 20:51
7F→:v1 = (A^t u1)/σ1,例此類推,少掉的向量(例如此題的v3)12/30 21:13
8F→:會屬於N(A),或是用v1 v2求也可12/30 21:13
11F→:答案問p你就寫p,問J你可以直接寫出來,都不用寫p^-112/30 21:09
12F→:如果只問J你可以不算p,Jordan form就是這樣做12/30 21:09
13F→:老師沒那麼無聊,會只問J就是不要你算p12/30 21:10
5F→:考卷問你heap建立的話,一定是指O(n)那種建法12/29 23:11
6F→:把n次insert那個忘了吧,至於另兩者就是n次insert12/29 23:13
1F→:題目沒說的話,cache size都是指放data的size12/27 01:57
5F→:只是單位的差別,解答那個CPI是新cycle time下的CPI12/20 15:45
6F→:0.5+0.02*100+0.04*0.3*100這種寫法是用舊cycle time看12/20 15:47
7F→:直接把CPI減半看計算上方便,但是觀念上要清楚改變的不是CPI12/20 15:51
9F→:題目沒寫,反正新的cycle time是舊的一半12/21 00:53
5F→:disk不能反向轉,應該是平均轉半圈會轉到那個sector12/18 07:13
3F→:Ax=Bx for all x屬於R → (A-B)x=0 for all x屬於R12/18 06:54
4F→:→ x屬於N(A-B) for all x屬於R → nullity(A-B) = n12/18 06:55
18F→:Average case下快為什麼實用性要倒過來12/18 06:57
19F→:程式的穩定性也不是用worst case當唯一指標吧12/18 06:58
20F→:Quicksort並不是快在有可能比O(nlogn)小,而是在大部分case12/18 07:00
21F→:比另外兩者快常數/低order的時間12/18 07:04
22F→:注意是大部分,反而應該說在特定情況才會比較慢12/18 07:05