²é¿´: 6056  |  »Ø¸´: 12
±¾Ìû²úÉú 1 ¸ö ÊýѧEPI £¬µã»÷ÕâÀï½øÐв鿴
µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû

Óêäìäì

гæ (³õÈëÎÄ̳)

[ÇóÖú] ÇëÎÊÓëtanh(x)¡¢arctan(x)ÕâÁ½¸öº¯ÊýµÄÇúÏßÏàËÆµÄº¯Êý»¹ÓÐÄÄЩ£¡£¡ ÒÑÓÐ2È˲ÎÓë

Çë¸÷λÊýѧ´óÅ£ÃÇ£¬Ìáµã½¨Ò飡£¡£¡

ÇëÎÊÓëtanh(x)¡¢arctan(x)ÕâÁ½¸öº¯ÊýµÄÇúÏßÏàËÆµÄº¯Êý»¹ÓÐÄÄЩ£¡£¡
20151201_170356(1).jpg  ¾ßÓÐÕâÑùÌØÕ÷µÄº¯Êý»¹ÓÐÄÄÐ©ÄØ£¿
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

wurongjun

ר¼Ò¹ËÎÊ (Ö°Òµ×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
Óêäìäì(Edstrayer´ú·¢): ½ð±Ò+2, rs 2015-12-05 01:00:32
Edstrayer: ÊýѧEPI+1 2016-01-02 00:26:37
SÇúÏßÄ£ÐÍ!
f(x)=1/(a+b*exp(-x))
ÇëÎÊÓëtanh(x)¡¢arctan(x)ÕâÁ½¸öº¯ÊýµÄÇúÏßÏàËÆµÄº¯Êý»¹ÓÐÄÄЩ£¡£¡-1
sss.JPG

ÉÆ¶ñµ½Í·ÖÕÓб¨,È˼äÕýµÀÊDz×É£.
4Â¥2015-12-03 11:34:41
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 13 ¸ö»Ø´ð

Ò£¿ØÐ¡³ó

½ð³æ (ÕýʽдÊÖ)

ÖÐÎç12µãÆð´²³ÔÔç·¹~
2Â¥2015-12-03 11:01:07
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

Ò£¿ØÐ¡³ó

½ð³æ (ÕýʽдÊÖ)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
Óêäìäì(Edstrayer´ú·¢): ½ð±Ò+1, rs 2015-12-05 00:59:59
sigmoidº¯Êý
1/(1+exp(-x))

·¢×ÔСľ³æAndroid¿Í»§¶Ë
ÖÐÎç12µãÆð´²³ÔÔç·¹~
3Â¥2015-12-03 11:10:14
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

Óêäìäì

гæ (³õÈëÎÄ̳)

ÒýÓûØÌû:
4Â¥: Originally posted by wurongjun at 2015-12-03 11:34:41
SÇúÏßÄ£ÐÍ!
f(x)=1/(a+b*exp(-x))

sss.JPG

·Ç³£¸ÐлÄúµÄ»Ø´ð£¬ÎÒ»¹ÏëÎÊһϣ¬¹ØÓÚ´ËÀàÇúÏßÈçºÎÕÒ³ö¶à¸öº¯Êý±í´ïʽ¡£ÄúÊÇÀûÓÃʲôÈí¼þÕÒµ½µÄ£¬¿ÉÒÔ½øÒ»²½½»Á÷Âð£¿ÆÚ´ýÄúµÄ»Ø´ð£¡£¡£¡
5Â¥2015-12-04 15:43:17
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 085600²ÄÁÏÓ뻯¹¤µ÷¼Á +7 A-¶ßÀ²ZÃÎ 2026-03-23 12/600 2026-03-23 23:16 by ÐÇ¿ÕÐÇÔÂ
[¿¼ÑÐ] 0854 ¿¼Ñе÷¼Á ÕÐÉúÁË£¡AI ·½Ïò +4 pk3725069 2026-03-19 16/800 2026-03-23 23:09 by Íô£¡£¿£¡
[¿¼ÑÐ] 269Çóµ÷¼Á +4 ÎÒÏë¶ÁÑÐ11 2026-03-23 4/200 2026-03-23 21:25 by pswait
[¿¼ÑÐ] ²ÄÁÏר˶ӢһÊý¶þ306 +8 z1z2z3879 2026-03-18 8/400 2026-03-23 20:49 by baobaoye
[»ù½ðÉêÇë] Çë½ÌÏ´ó¼Ò 2026Äê¹ú¼Ò»ù½ðÉêÇëÊÇ˫äÉóÂ𣿠+3 lishucheng1 2026-03-22 4/200 2026-03-23 20:48 by god_tian
[¿¼ÑÐ] Ò»Ö¾Ô¸¶«»ª´óѧ»¯Ñ§070300£¬Çóµ÷¼Á +7 2117205181 2026-03-21 8/400 2026-03-22 22:55 by chixmc
[¿¼ÑÐ] ÉúÎïѧ071000 329·ÖÇóµ÷¼Á +5 ÎÒ°®ÉúÎïÉúÎﰮΠ2026-03-17 5/250 2026-03-22 16:42 by tcx007
[¿¼ÑÐ] 289Çóµ÷¼Á +7 »³èªÎÕè¤l 2026-03-20 7/350 2026-03-22 15:57 by ColorlessPI
[¿¼ÑÐ] 275Çóµ÷¼Á +6 shansx 2026-03-22 8/400 2026-03-22 15:27 by barlinike
[¿¼ÑÐ] 311Çóµ÷¼Á +3 26ÑÐ0 2026-03-20 3/150 2026-03-22 14:46 by ColorlessPI
[¿¼ÑÐ] ²ÄÁÏÇóµ÷¼Á +5 @taotao 2026-03-21 5/250 2026-03-21 20:55 by lbsjt
[¿¼ÑÐ] 265Çóµ÷¼Á +12 ÁºÁºÐ£Ð£ 2026-03-19 14/700 2026-03-21 13:38 by lature00
[¿¼ÑÐ] 332Çóµ÷¼Á +4 ydfyh 2026-03-17 4/200 2026-03-21 02:20 by JourneyLucky
[¿¼ÑÐ] 085700×ÊÔ´Óë»·¾³308Çóµ÷¼Á +12 īīĮ 2026-03-18 13/650 2026-03-21 01:42 by JourneyLucky
[¿¼ÑÐ] 296Çóµ÷¼Á +6 www_q 2026-03-18 10/500 2026-03-20 23:56 by JourneyLucky
[¿¼ÑÐ] 22408 344·Ö Çóµ÷¼Á Ò»Ö¾Ô¸ »ªµç¼ÆËã»ú¼¼Êõ +4 solanXXX 2026-03-20 4/200 2026-03-20 23:49 by alg094825
[¿¼ÑÐ] 308Çóµ÷¼Á +3 °¢½ã°¢½ã¼Ò°¡ 2026-03-18 3/150 2026-03-20 23:24 by JourneyLucky
[¿¼ÑÐ] 317Çóµ÷¼Á +5 Éê×ÓÉêÉê 2026-03-19 9/450 2026-03-20 22:26 by JourneyLucky
[¿¼ÑÐ] Ò»Ö¾Ô¸ËÕÖÝ´óѧ²ÄÁÏÇóµ÷¼Á£¬×Ü·Ö315£¨Ó¢Ò»£© +5 sbdksD 2026-03-19 5/250 2026-03-20 22:10 by luoyongfeng
[¿¼ÑÐ] 086500 325 Çóµ÷¼Á +3 Áì´øÐ¡ÐÜ 2026-03-19 3/150 2026-03-20 18:38 by ¾¡Ë´Ò¢1
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û