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[ÇóÖú] ÇóÖú£¬Éó¸åÈËÈÃÓà 2-error norm ·ÖÎöÊÕÁ²Îó²î£¬ÇëÎʸÃÈçºÎ²Ù×÷£¿ ÒÑÓÐ1È˲ÎÓë

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Éó¸åÈ˶ԴËÌá³öµÄÎÊÌâÊÇ£ºThe 2-error norm over time is useful to see the error distribution across the time of interest.
Õâ¸öÎÊÌâÖÐ 2-error norm µÄ׼ȷд·¨¿ÉÄÜÓ¦¸ÃΪ L2-error norm£¨¶þ·¶Êý£©¡£ÇëÎʸÃÈçºÎ½â¾öÉó¸åÈ˵ÄÕâ¸öÎÊÌ⣿ÈçºÎ¶Ôʾ²¨Æ÷µÄÊý¾Ý½øÐд¦Àí£¿Ð»Ð»£¡
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feixiaolin

ÈÙÓþ°æÖ÷ (ÎÄ̳¾«Ó¢)

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2Â¥2017-04-29 16:18:55
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FMStation

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The l2 norm of a vector is the square root of the sum of the absolute values squared
CODE:
X = randn(8,1);
norm(X,2)

CODE:
sqrt(sum(abs(X).^2))

http://mathworld.wolfram.com/L2-Norm.html
L2-Norm

http://www.math.pitt.edu/~sussmanm/2071Spring09/lab05/
Norms, Errors and Condition Numbers
3Â¥2017-04-29 22:04:51
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

wqrstc

Í­³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
2Â¥: Originally posted by feixiaolin at 2017-04-29 16:18:55
http://cn.mathworks.com/help/matlab/ref/normest.html?requestedDomain=www.mathworks.com

ллÄúµÄ»Ø¸´£¡
4Â¥2017-05-02 15:19:38
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

wqrstc

Í­³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
3Â¥: Originally posted by FMStation at 2017-04-29 22:04:51
The l2 norm of a vector is the square root of the sum of the absolute values squared


X = randn(8,1);
norm(X,2)



sqrt(sum(abs(X).^2))


http://mathworld.wolfram.com/L2-Norm.html
L2-Nor ...

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