²é¿´: 1161  |  »Ø¸´: 7
µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû

tyc13

ÖÁ×ðľ³æ (Ö°Òµ×÷¼Ò)

[ÇóÖú] MatlabÖнâ·ÇÏßÐÔ·½³ÌX=A\bµÄÊÊÓÃÌõ¼þÊÇʲô°¡£¿ ÒÑÓÐ1È˲ÎÓë

¸÷λ³æÓѺã¡
ÎÒÓöµ½ÁËÒ»¸ö½â¾ØÕ󷽳̵ÄÎÊÌâ A*X=b
·½³Ì×éµÄϵÊý¾ØÕóA½Ó½üÆæÒ죬¾ØÕóµÄ½×Êý´ó¸ÅÊÇA£º48*48£¬X£º48*1£¬b£º48*1
Óà  X=A\b   Õâ¸öÓï¾äʱ£¬MATLAB»áÌáʾ£º¼ÆËã½á¹û¿ÉÄܲ»×¼È·
½â³öÀ´µÄ½á¹ûÓжàÉÙ¿ÉÐŶÈÄØ£¿ »¹ÓбðµÄ·½·¨Âð£¿
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:

¼òµ¥¼´ÍêÃÀ¡£
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

minizhu

½ð³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
7Â¥: Originally posted by tyc13 at 2015-06-09 12:27:51
ÄúºÃ£¬ÎÒ°ÑcÖµÉèÖÃΪ1e-6£¬¿ÉÊÇÌõ¼þÊý±ä³ÉÁËNAN£¬¸½¼þÊÇ´úÂëºÍÔËÐнá¹û¡£ÇëÎÊΪʲô£¿

´úÂë.png

Ìõ¼þÊý.png
...

¹â´ÓÄã¸øµÄÕâ¶Î´úÂë ¿´²»³öÀ´Ê²Ã´ÎÊÌâ Ö÷ÒªÓëÄãµÄ¾ØÕóAµÄ½á¹¹ÓйØ
Ó¦ÓÃÊýѧ·´ÎÊÌ⣬ƫ΢·Ö
8Â¥2015-06-09 18:07:32
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 8 ¸ö»Ø´ð

minizhu

½ð³æ (СÓÐÃûÆø)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
½Ó½üÆæÒìµÄ»° Òª×öregularization
ÊÔ׎âÒ»ÏÂÕâ¸öÌæ´ú·½³Ì
(A' A +c I ) x =A' b
ÕâÀïIÊǵ¥Î»Õó c ÊÇÈÎÒâºÜСµÄÊý ¿ÉÒԸıä ÓÖ½Ðregularization parameter

[ ·¢×ÔСľ³æ¿Í»§¶Ë ]
Ó¦ÓÃÊýѧ·´ÎÊÌ⣬ƫ΢·Ö
2Â¥2015-06-08 21:59:39
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

tyc13

ÖÁ×ðľ³æ (Ö°Òµ×÷¼Ò)

ÒýÓûØÌû:
2Â¥: Originally posted by minizhu at 2015-06-08 21:59:39
½Ó½üÆæÒìµÄ»° Òª×öregularization
ÊÔ׎âÒ»ÏÂÕâ¸öÌæ´ú·½³Ì
(A' A +c I ) x =A' b
ÕâÀïIÊǵ¥Î»Õó c ÊÇÈÎÒâºÜСµÄÊý ¿ÉÒԸıä ÓÖ½Ðregularization parameter

ÄúºÃ£¬ÎÒÔÚÍøÉÏËÑÁËÒ»ÏÂÕýÔò»¯·½·¨£¬ËµÊÇÌõ¼þÊýºÜ´óµÄÎÊÌâ¿ÉÒÔÓ᣿ÉÊÇÎÒÕâ¸öÎÊÌâÌõ¼þÊýºÜС°¡£¬RCOND=1.5*e-19£¬»¹¿ÉÒÔÓÃÂð£¿
¼òµ¥¼´ÍêÃÀ¡£
3Â¥2015-06-09 09:13:26
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

minizhu

½ð³æ (СÓÐÃûÆø)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï
tyc13: ½ð±Ò+3, ¡ï¡ï¡ïºÜÓаïÖú 2015-06-10 08:11:56
ÒýÓûØÌû:
3Â¥: Originally posted by tyc13 at 2015-06-09 10:13:26
ÄúºÃ£¬ÎÒÔÚÍøÉÏËÑÁËÒ»ÏÂÕýÔò»¯·½·¨£¬ËµÊÇÌõ¼þÊýºÜ´óµÄÎÊÌâ¿ÉÒÔÓ᣿ÉÊÇÎÒÕâ¸öÎÊÌâÌõ¼þÊýºÜС°¡£¬RCOND=1.5*e-19£¬»¹¿ÉÒÔÓÃÂð£¿...

ÄãµÄϵÊý¾ØÕóA½Ó½üÆæÒ죬¿Ï¶¨ÊÇÒª´¦ÀíһϵÄ
Õâ¸ö cµÄÖµ ÄãÊÇ¿ÉÒÔµ÷ÕûµÄ Äã¿ÉÒÔÊÔ×ŵ÷ÕûÒ»ÏÂcµÄÖµ ¿´¿´½á¹ûÓÖʲô±ä»¯
c=0µÄ»°¾ÍÊDZê×¼µÄ×îС¶þ³Ë½â£»
c>0µÄ»°¾ÍÊÇÕýÔò»¯µÄ½â£»
ÄãÖ±½Ó½â Ax=b¿Ï¶¨Ã»Óнâ A'Ax=A'bÎȶ¨
Ó¦ÓÃÊýѧ·´ÎÊÌ⣬ƫ΢·Ö
4Â¥2015-06-09 09:44:52
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] ²ÄÁÏѧ˶297ÒѹýËÄÁù¼¶Çóµ÷¼ÁÍÆ¼ö +11 adaie 2026-03-19 11/550 2026-03-20 21:30 by laoshidan
[¿¼ÑÐ] Ò»Ö¾Ô¸Î人Àí¹¤²ÄÁϹ¤³Ìר˶µ÷¼Á +8 Doleres 2026-03-19 8/400 2026-03-20 21:09 by zhukairuo
[¿¼ÑÐ] 295¸´ÊÔµ÷¼Á +8 ¼òľChuFront 2026-03-19 8/400 2026-03-20 20:44 by zhukairuo
[¿¼ÑÐ] 279·ÖÇóµ÷¼Á Ò»Ö¾Ô¸211 +10 chaojifeixia 2026-03-19 11/550 2026-03-20 20:32 by JourneyLucky
[¿¼ÑÐ] Ò»Ö¾Ô¸ÄÏÀí¹¤085701»·¾³302Çóµ÷¼ÁԺУ +3 ¿ûè÷ÎÀ¶Ó 2026-03-20 3/150 2026-03-20 19:28 by zhukairuo
[¿¼ÑÐ] 317Çóµ÷¼Á +4 Éê×ÓÉêÉê 2026-03-19 8/400 2026-03-20 11:20 by Éê×ÓÉêÉê
[ÂÛÎÄͶ¸å] ÉêÇë»Ø¸åÑÓÆÚÒ»¸öÔ£¬±à¼­Í¬ÒâÁË¡£µ«ÏµÍ³ÉϵÄʱ¼äû±ä£¬¸ø±à¼­ÓÖдÓʼþÁË£¬Ã»»Ø¸´ 10+3 wangf9518 2026-03-17 4/200 2026-03-19 23:55 by babero
[¿¼ÑÐ] 299Çóµ÷¼Á +5 ¡÷С͸Ã÷* 2026-03-17 5/250 2026-03-18 11:49 by ¾¡Ë´Ò¢1
[¿¼ÑÐ] 278Çóµ÷¼Á +5 ÑÌ»ðÏÈÓÚ´º 2026-03-17 5/250 2026-03-18 08:43 by ÐÇ¿ÕÐÇÔÂ
[¿¼ÑÐ] 277µ÷¼Á +5 ×ÔÓɼå±ý¹û×Ó 2026-03-16 6/300 2026-03-17 19:26 by Àîleezz
[¿¼ÑÐ] 301Çóµ÷¼Á +4 A_JiXing 2026-03-16 4/200 2026-03-17 17:32 by ruiyingmiao
[¿¼ÑÐ] ÓÐûÓеÀÌú/ÍÁľµÄÏëµ÷¼ÁÄÏÁÖ£¬¸ø×Ô¼ºÕÐʦµÜÖС« +3 TqlXswl 2026-03-16 7/350 2026-03-17 15:23 by TqlXswl
[¿¼ÑÐ] Ò»Ö¾Ô¸£¬¸£ÖÝ´óѧ²ÄÁÏר˶339·ÖÇóµ÷¼Á +3 ľ×ÓmomoÇàÕù 2026-03-15 3/150 2026-03-17 07:52 by laoshidan
[¿¼ÑÐ] 283Çóµ÷¼Á +3 Ìý·ç¾ÍÊÇÓꣻ 2026-03-16 3/150 2026-03-17 07:41 by ÈÈÇéɳĮ
[¿¼ÑÐ] [µ¼Ê¦ÍƼö]Î÷ÄϿƼ¼´óѧ¹ú·À/²ÄÁϵ¼Ê¦ÍƼö +3 ¼â½ÇСºÉ 2026-03-16 6/300 2026-03-16 23:21 by ¼â½ÇСºÉ
[¿¼ÑÐ] ҩѧ383 Çóµ÷¼Á +3 ҩѧchy 2026-03-15 4/200 2026-03-16 20:51 by Ôª×Ó^0^
[¿¼ÑÐ] 333Çóµ÷¼Á +3 ÎÄ˼¿Í 2026-03-16 7/350 2026-03-16 18:21 by ÎÄ˼¿Í
[¿¼ÑÐ] 326Çóµ÷¼Á +4 ŵ±´¶û»¯Ñ§½±êéê 2026-03-15 7/350 2026-03-16 17:11 by ŵ±´¶û»¯Ñ§½±êéê
[¿¼ÑÐ] 304Çóµ÷¼Á +3 ÂüÊâ2266 2026-03-14 3/150 2026-03-16 16:39 by houyaoxu
[¿¼ÑÐ] 326Çóµ÷¼Á +3 mlpqaz03 2026-03-15 3/150 2026-03-16 07:33 by Iveryant
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û