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albertazhaoͳæ (³õÈëÎÄ̳)
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·ÇÏßÐԻعéÖУ¬º¯Êý±í´ïʽ´íÎóMatrix dimensions must agree???? Ôõô»ØÊÂÄØ£¿¼±¼±¼±£¡£¡£¡ ³ÌÐòÈçÏ x = 1.1200 1.2400 1.3000 1.1700 1.1600 0.9760 0.8090 0.8100 0.4440 0.4290 y = 1.5900 1.6300 1.8600 1.7700 1.7300 1.4500 1.3600 1.2000 0.9520 0.8280 ab=[1 2]; f=inline('y-(a(2)*(1.1*sqrt(x)+a(1))./(0.5*x+52))','x','y','a'); [a,r]=lsqnonlin(f,ab,[ ],[ ],[ ],x,y) albertazhao@gmail.com |
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albertazhao
ͳæ (³õÈëÎÄ̳)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 158.5
- Ìû×Ó: 19
- ÔÚÏß: 8.2Сʱ
- ³æºÅ: 1494250
- ×¢²á: 2011-11-16
- רҵ: ¹¤³ÌÈÈÎïÀíÏà¹Ø½»²æÁìÓò
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¿ÉÒÔÔËÐÐÁË£¬ ΪʲôÊÇÕâ¸ö˳Ðò ÁíÍâÎÒ»»ÁËÊý¾Ý£¬ÎªÊ²Ã´¾ÍµÃ²»µ½½á¹û£¬½á¹û»¹Êdzõʼֵ cftoolÃüÁîÒ²²»Äܵõ½Îȶ¨ÊýÖµ£¬ÔËÐÐÒ»´ÎµÃµ½µÄÊýÖµºÍÔËÐеڶþ´Î²»Í¬ ÎÒÄâºÏ¹«Ê½ ÄâºÏ·½³Ì-·ÇÏßÐԻعé-Matlab lsqnonlinº¯Êý Çó½âa b y=316.7808*b*(1.1*sqrt(x)+a)/(0.48485*x+51.88261) x y 290 1.59E+16 230 1.63E+16 200 1.86E+16 160 1.77E+16 120 1.73E+16 80 1.45E+16 50 1.36E+16 30 1.20E+16 15 9.52E+15 7 8.28E+15 |

11Â¥2012-07-19 13:59:50
albertazhao
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- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 158.5
- Ìû×Ó: 19
- ÔÚÏß: 8.2Сʱ
- ³æºÅ: 1494250
- ×¢²á: 2011-11-16
- רҵ: ¹¤³ÌÈÈÎïÀíÏà¹Ø½»²æÁìÓò
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http://zhidao.baidu.com/question/451848649.html#replyask-62449207 ²»Äܸ½Í¼£¬ÎÊÌâÔÚÕâÀïÏêϸÃèÊö ÎÒÔÚ°Ù¶ÈÖªµÀÐüÉÍÌáÎÊÁË¡£ |

3Â¥2012-07-17 13:28:50
albertazhao
ͳæ (³õÈëÎÄ̳)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 158.5
- Ìû×Ó: 19
- ÔÚÏß: 8.2Сʱ
- ³æºÅ: 1494250
- ×¢²á: 2011-11-16
- רҵ: ¹¤³ÌÈÈÎïÀíÏà¹Ø½»²æÁìÓò
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General model: f(x) = b*(1.1*sqrt(x)+a)/(0.5*x+52) Coefficients (with 95% confidence bounds): a = -0.2423 (-0.3988, -0.08585) b = 92.99 (75.48, 110.5) Goodness of fit: SSE: 0.05727 R-square: 0.9482 Adjusted R-square: 0.9417 RMSE: 0.08461 Õâ¸öÊÇÓÃMatlab µÄcftoolÃüÁî×öµÄ¡£Êǽ»»¥Ê½£¬ÎÒÏëÖªµÀÓóÌÐòÄÄÀï³ö´í£¬Ôõô½â¾ö¡£ |

4Â¥2012-07-17 13:54:09
albertazhao
ͳæ (³õÈëÎÄ̳)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 158.5
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- ÔÚÏß: 8.2Сʱ
- ³æºÅ: 1494250
- ×¢²á: 2011-11-16
- רҵ: ¹¤³ÌÈÈÎïÀíÏà¹Ø½»²æÁìÓò
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ÓÃ1stOpt£º Function y=a2*(1.1*sqrt(x)+a1)/(0.5*x+52); Data; x=1.1200,1.2400,1.3000,1.1700,1.1600,0.9760,0.8090,0.8100,0.4440,0.4290; y=1.5900,1.6300,1.8600,1.7700,1.7300,1.4500,1.3600,1.2000,0.9520,0.8280; ¸´ÖÆ´úÂë ¾ù·½²î(RMSE): 0.075677672378937 ²Ð²îƽ·½ºÍ(SSE): 0.0572711009669372 Ïà¹ØÏµÊý(R): 0.973733426792748 Ïà¹ØÏµÊý֮ƽ·½(R^2): 0.948156786453548 ¾ö¶¨ÏµÊý(DC): 0.948156780435072 ¿¨·½ÏµÊý(Chi-Square): 0.0203090417650265 Fͳ¼Æ(F-Statistic): 154.311404020362 ²ÎÊý ×î¼Ñ¹ÀËã ---------- ------------- a2 92.9877941634666 a1 -0.242321929529164 |

5Â¥2012-07-17 13:55:18













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