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aaron7

Ìú³æ (³õÈëÎÄ̳)

[ÇóÖú] Ò»¸ölog-det-sum-exp-matrixº¯ÊýµÄ͹ÐÔÑо¿ÎÊÌâ

ÇëÎʸ½¼þÀïÕâ¸öf(X1,X2...XN)º¯ÊýÊÇ͹µÄÂð£¿XiÊǶòÃ×ÌØÕý¶¨¾ØÕó
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» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:

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aaron7

Ìú³æ (³õÈëÎÄ̳)

ÒýÓûØÌû:
2Â¥: Originally posted by acmuser at 2012-05-17 18:51:28:
interesting question, I will think about it when I have time.

A1=rand(2,2)+i*rand(2,2)
A2=rand(2,2)+i*rand(2,2)
A1=A1*A1'
A2=A2*A2'
B1=rand(2,2)+i*rand(2,2)
B2=rand(2,2)+i*rand(2,2)
B1=B1*B1'
B2=B2*B2'
t=0.3
a1=t*A1+(1-t)*B1
a2=t*A2+(1-t)*B2
ans1=log2(det(expm(a1)+expm(a2)))
ans2=t*log2(det(expm(A1)+expm(A2)))+(1-t)*log2(det(expm(B1)+expm(B2)))
ÕâÊÇ·ÂÕæ´úÂë
4Â¥2012-05-18 09:38:56
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 7 ¸ö»Ø´ð

acmuser

Òø³æ (СÓÐÃûÆø)

interesting question, I will think about it when I have time.
2Â¥2012-05-17 18:51:28
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

aaron7

Ìú³æ (³õÈëÎÄ̳)

ÒýÓûØÌû:
2Â¥: Originally posted by acmuser at 2012-05-17 18:51:28:
interesting question, I will think about it when I have time.

ºÇºÇ лл¹Ø×¢
3Â¥2012-05-18 09:03:16
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

acmuser

Òø³æ (СÓÐÃûÆø)

ÄãÕâÀï͹º¯ÊýµÄ¶¨ÒåÊdz£¼ûµÄÄÇÖÖÂ𣿼´f(tu+(1-t)v)>=tf(u)+(1-t)f(v)?
5Â¥2012-05-20 00:52:13
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
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