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-   -   Question re: Notation for PLA Question (http://book.caltech.edu/bookforum/showthread.php?t=4170)

paul99 04-07-2013 06:33 PM

Question re: Notation for PLA Question
 
Hi,

Playing a bit of catchup -- just finished watching both lectures and starting the homework.

I must have missed something in the lectures or my math is more rusty than I realized, but what does the notation X = [-1, 1] x  [-1, 1] mean??

Thanks!

Paul

yaser 04-07-2013 08:08 PM

Re: Question re: Notation for PLA Question
 
Quote:

Originally Posted by paul99 (Post 10212)
Hi,

Playing a bit of catchup -- just finished watching both lectures and starting the homework.

I must have missed something in the lectures or my math is more rusty than I realized, but what does the notation X = [-1, 1] x  [-1, 1] mean??

Thanks!

Paul

It is the the square on the 2-dimensinal plane from -1 to +1 on both coordinates, i.e., all points (x_1,x_2) such that 1-\le x_1 \le 1 and 1-\le x_2 \le 1.

paul99 04-07-2013 09:07 PM

Re: Question re: Notation for PLA Question
 
Thanks Professor!

brettbond 01-04-2015 10:57 AM

Re: Question re: Notation for PLA Question
 
That was helpful to me too.


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