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小书园至尊木虫 (著名写手)
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[求助]
求助一个1stopt拟合，可追加金币 已有1人参与
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有理论公式，有数据点，但是拟合对初值太敏感，听说1stopt可以无初值拟合，求帮助拟合并告知初值。。 需要拟合的参数：gama_1, gama_2, k, g 变量：delta=0.01; w1=.69; w2=w1+delta 公式：X(w)=(w-w2+i*gama_2/2)/((w-w1+i*gama_1/2)*(w-w2+i*gama_2/2)-k^2); X_imag(w)=i*(X(w)); T_func(w)=Real(1-g*X_imag(w)); 数据点对应(w,T_func) 数据点： w T 0.3 0.94557 0.30301 0.94409 0.30602 0.94264 0.30903 0.94114 0.31204 0.93957 0.31505 0.93803 0.31806 0.93639 0.32107 0.93474 0.32408 0.93307 0.32709 0.93131 0.3301 0.92957 0.33311 0.92774 0.33612 0.92588 0.33913 0.924 0.34214 0.92202 0.34515 0.92005 0.34816 0.918 0.35117 0.91589 0.35418 0.91378 0.35719 0.91155 0.3602 0.90931 0.36321 0.90701 0.36622 0.90462 0.36923 0.90222 0.37224 0.89971 0.37525 0.89716 0.37826 0.89456 0.38127 0.89185 0.38428 0.88912 0.38729 0.88628 0.3903 0.88336 0.39331 0.88041 0.39632 0.87731 0.39933 0.87419 0.40234 0.87096 0.40535 0.86762 0.40836 0.86424 0.41137 0.8607 0.41438 0.8571 0.41739 0.8534 0.4204 0.84955 0.42341 0.84565 0.42642 0.84158 0.42943 0.83741 0.43244 0.83313 0.43545 0.82867 0.43846 0.82414 0.44147 0.81941 0.44448 0.81454 0.44749 0.80955 0.4505 0.80435 0.45351 0.79902 0.45652 0.79348 0.45953 0.78775 0.46254 0.78186 0.46555 0.77571 0.46856 0.76939 0.47157 0.76282 0.47458 0.75599 0.47759 0.74896 0.4806 0.7416 0.48361 0.734 0.48662 0.7261 0.48963 0.71785 0.49264 0.70932 0.49565 0.70039 0.49866 0.6911 0.50167 0.68143 0.50468 0.6713 0.50769 0.66077 0.5107 0.64973 0.51371 0.63818 0.51672 0.62612 0.51973 0.61343 0.52274 0.60018 0.52575 0.58624 0.52876 0.57158 0.53177 0.55622 0.53478 0.53999 0.53779 0.52295 0.5408 0.50497 0.54381 0.48599 0.54682 0.46602 0.54983 0.44488 0.55284 0.42259 0.55585 0.39908 0.55886 0.37423 0.56187 0.34809 0.56488 0.32054 0.56789 0.29164 0.5709 0.26145 0.57391 0.23002 0.57692 0.19764 0.57993 0.16458 0.58294 0.13141 0.58595 0.09892 0.58896 0.06815 0.59197 0.04069 0.59498 0.01848 0.59799 0.00406 0.601 4.18529E-4 0.60401 0.01078 0.60702 0.03822 0.61003 0.08497 0.61304 0.1516 0.61605 0.23639 0.61906 0.33508 0.62207 0.44136 0.62508 0.54816 0.62809 0.64872 0.6311 0.73801 0.63411 0.81302 0.63712 0.87254 0.64013 0.91711 0.64314 0.94786 0.64615 0.96665 0.64916 0.97531 0.65217 0.97542 0.65518 0.96872 0.65819 0.95624 0.6612 0.93914 0.66421 0.91826 0.66722 0.89405 0.67023 0.86727 0.67324 0.83804 0.67625 0.80674 0.67926 0.77366 0.68227 0.73869 0.68528 0.70227 0.68829 0.66422 0.6913 0.62468 0.69431 0.58387 0.69732 0.54153 0.70033 0.49811 0.70334 0.45345 0.70635 0.40766 0.70937 0.36119 0.71237 0.31383 0.71539 0.26649 0.7184 0.21948 0.7214 0.17187 0.72442 0.12657 0.72742 0.08336 0.73043 0.04947 0.73345 0.07342 0.73645 0.14342 0.73947 0.19313 0.74248 0.22468 0.74548 0.24574 0.7485 0.26155 0.7515 0.2762 0.75452 0.29013 0.75753 0.30464 0.76053 0.31982 0.76355 0.3352 0.76655 0.35128 0.76957 0.3672 0.77258 0.38314 0.77558 0.39893 0.7786 0.4141 0.7816 0.42908 0.78461 0.44335 0.78763 0.45718 0.79063 0.4706 0.79365 0.48337 0.79666 0.49596 0.79967 0.50804 0.80268 0.51986 0.80569 0.53152 0.8087 0.54282 0.81171 0.55412 0.81472 0.56517 0.81773 0.57611 0.82074 0.58702 0.82375 0.59768 0.82676 0.60836 0.82977 0.61884 0.83278 0.62919 0.83579 0.63946 0.8388 0.64946 0.84181 0.65939 0.84482 0.66907 0.84783 0.67856 0.85084 0.68789 0.85385 0.69693 0.85686 0.70583 0.85987 0.71446 0.86288 0.72287 0.86589 0.73111 0.8689 0.73907 0.87191 0.74687 0.87492 0.75444 0.87793 0.7618 0.88094 0.76902 0.88395 0.77599 0.88696 0.78284 0.88997 0.78949 0.89298 0.79597 0.89599 0.80233 0.899 0.80849 0.90201 0.81455 0.90502 0.82044 0.90803 0.82618 0.91104 0.83182 0.91405 0.83728 0.91706 0.84264 0.92007 0.84786 0.92308 0.85293 0.92609 0.85789 0.9291 0.8627 0.93211 0.86739 0.93512 0.87193 0.93813 0.87634 0.94114 0.88063 0.94415 0.88476 0.94716 0.88877 0.95017 0.89264 0.95318 0.89637 0.95619 0.89997 0.9592 0.90342 0.96221 0.90674 0.96522 0.90993 0.96823 0.91298 0.97124 0.9159 0.97425 0.91867 0.97726 0.92132 0.98027 0.92383 0.98328 0.92621 0.98629 0.92845 0.9893 0.93056 0.99231 0.93254 0.99532 0.93437 0.99833 0.93608 1.00134 0.93765 1.00435 0.93908 1.00736 0.94038 1.01037 0.94152 1.01338 0.94253 1.01639 0.9434 1.0194 0.9441 1.02241 0.94467 1.02542 0.94507 1.02843 0.94532 1.03144 0.9454 1.03445 0.9453 1.03746 0.94505 1.04047 0.9446 1.04348 0.94398 1.04649 0.94316 1.0495 0.94214 1.05251 0.94093 1.05552 0.93947 1.05853 0.9378 1.06154 0.93589 1.06455 0.93371 1.06756 0.9313 1.07057 0.92855 1.07358 0.9255 1.07659 0.9221 1.0796 0.91827 1.08261 0.91404 1.08562 0.90918 1.08863 0.90361 1.09164 0.89695 1.09465 0.88805 1.09766 0.87424 1.10067 0.85748 1.10368 0.84494 1.10669 0.83366 1.1097 0.82897 1.11271 0.82571 1.11572 0.8205 1.11873 0.8138 1.12174 0.80631 1.12475 0.79869 1.12776 0.79126 1.13077 0.78433 1.13378 0.77808 1.13679 0.77241 1.1398 0.76735 1.14281 0.76265 1.14582 0.75813 1.14883 0.75368 1.15184 0.74903 1.15485 0.74423 1.15786 0.73913 1.16087 0.73375 1.16388 0.72817 1.16689 0.72232 1.1699 0.71638 1.17291 0.71031 1.17592 0.7042 1.17893 0.69816 1.18194 0.69212 1.18495 0.68625 1.18796 0.68048 1.19097 0.67485 1.19398 0.6694 1.19699 0.66402 1.2 0.65882@月只蓝@beefly |
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dingd
铁杆木虫 (职业作家)
- 计算强帖: 4
- 应助: 1641 (讲师)
- 金币: 15037.3
- 散金: 101
- 红花: 234
- 帖子: 3410
- 在线: 1223.7小时
- 虫号: 291104
- 注册: 2006-10-28
【答案】应助回帖
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
感谢参与，应助指数 +1
小书园: 金币+50, ★★★很有帮助, Thank you all the same. 2017-04-25 23:28:16
感谢参与，应助指数 +1
小书园: 金币+50, ★★★很有帮助, Thank you all the same. 2017-04-25 23:28:16
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效果不是太好吧： 均方差(RMSE): 0.162665706058403 残差平方和(SSE): 7.91157944631611 相关系数(R): 0.77176499831348 相关系数之平方(R^2): 0.595621212621806 修正R平方(Adj. R^2): 0.592888923517899 确定系数(DC): 0.576685562353128 F统计(F-Statistic): 181.32287882737 参数 最佳估算 -------------------- ------------- g -0.0894213923500301 gama_2 -0.131995910767894 gama_1 -0.157252595677229 k -0.0986943973329742  c44.jpg |
2楼2017-04-24 15:41:22
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