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jiaqiong424金蟲 (正式寫手)
瓜籽皮兒
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[求助]
求大神跑下1stOpt,一個sharemodel,謝謝!
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請大神代跑下,一個sharemodel,麻煩給看下結(jié)果,謝謝! IntParameter a, b, c, d, x0; Variable x1,x2,y1,y2; SharedModel; Function y1 = a-(b/((x1-x0-c*293)+(Sqrt(x1-x0-c*293)^2+d*x1*293))); y2 = a-(b/((x2-x0-c*313.85)+(Sqrt(x2-x0-c*313.85)^2+d*x2*313.85))); Data; // x1 , x2 , y1 , y2 1.495726496 1.49573 6.893169877 8.25219 10.47008547 121.15385 6.711033275 6.73905 15.70512821 131.62393 6.626970228 6.59895 20.94017094 142.09402 6.528896673 6.38879 30.66239316 161.53846 6.34676007 6.02452 31.41025641 180.98291 6.290718039 5.66025 45.61965812 191.45299 5.996497373 5.45009 59.82905983 202.67094 5.6882662 5.23993 61.32478632 210.89744 5.646234676 5.04378 75.53418803 221.36752 5.338003503 4.81961 76.28205128 231.83761 5.295971979 4.60946 90.49145299 241.55983 4.973730298 4.37128 91.23931624 252.02991 4.931698774 4.1331 105.4487179 263.24786 4.567425569 3.83888 110.6837607 271.47436 4.385288967 3.62872 121.1538462 281.19658 4.119089317 3.36252 130.8760684 291.66667 3.796847636 3.05429 135.3632479 301.38889 3.684763573 2.78809 150.3205128 310.36325 3.222416813 2.54991 151.0683761 322.32906 3.124343257 2.18564 165.2777778 330.55556 2.704028021 1.90543 170.5128205 339.52991 2.465849387 1.63923 179.4871795 2.185639229 189.957265 1.821366025 190.7051282 1.737302977 204.1666667 1.246935201 210.1495726 1.022767075 219.8717949 0.65849387 230.3418803 0.210157618 234.8290598 -0.014010508 |
金蟲 (正式寫手)
瓜籽皮兒
金蟲 (正式寫手)
瓜籽皮兒
鐵桿木蟲 (職業(yè)作家)
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樓主的公式是否可以改動下,比如:“Sqrt(x-x0-c*313.85)^2”與“abs(x-x0-c*313.85)”效果上有區(qū)別嗎? 前者有可能出現(xiàn)負(fù)數(shù)開方導(dǎo)致出錯的現(xiàn)象,而后者則不會。改動后計(jì)算結(jié)果: 均方差(RMSE):1.34753484873093 殘差平方和(SSE):94.4242087643035 相關(guān)系數(shù)(R): 0.934546401041351 相關(guān)系數(shù)之平方(R^2): 0.873376975699341 確定系數(shù)(DC): 0.486778559920511 F統(tǒng)計(jì)(F-Statistic): 6.02609707437939 參數(shù) 最佳估算 -------------------- ------------- a -2.87467666113097 b 31.397228617914 x0 2.2915940326294E-16 c 0.00497831152708185 d -0.00640191796000243 |
金蟲 (正式寫手)
瓜籽皮兒
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終于等到大神回復(fù)了,十分感謝。。。。。。。。。! 我修改了下,謝謝您提的問題,之前的好像括號被我弄錯了,那個開方還包括后面的d*x1*293部分,能麻煩您再幫我跑一次嗎,并且把擬合的圖形貼給貼一下,謝謝了。 IntParameter a, b, c, d, x0; Variable x1,x2,y1,y2; SharedModel; Function y1 = a-b/((x1-x0-c*293)+Sqrt ((x1-x0-c*293)^2+d*x1*293)); y2 = a-b/((x2-x0-c*313.85)+Sqrt((x2-x0-c*313.85)^2+d*x2*313.85)); Data; // x1 , x2 , y1 , y2 1.495726496 1.49573 6.893169877 8.25219 10.47008547 121.15385 6.711033275 6.73905 15.70512821 131.62393 6.626970228 6.59895 20.94017094 142.09402 6.528896673 6.38879 30.66239316 161.53846 6.34676007 6.02452 31.41025641 180.98291 6.290718039 5.66025 45.61965812 191.45299 5.996497373 5.45009 59.82905983 202.67094 5.6882662 5.23993 61.32478632 210.89744 5.646234676 5.04378 75.53418803 221.36752 5.338003503 4.81961 76.28205128 231.83761 5.295971979 4.60946 90.49145299 241.55983 4.973730298 4.37128 91.23931624 252.02991 4.931698774 4.1331 105.4487179 263.24786 4.567425569 3.83888 110.6837607 271.47436 4.385288967 3.62872 121.1538462 281.19658 4.119089317 3.36252 130.8760684 291.66667 3.796847636 3.05429 135.3632479 301.38889 3.684763573 2.78809 150.3205128 310.36325 3.222416813 2.54991 151.0683761 322.32906 3.124343257 2.18564 165.2777778 330.55556 2.704028021 1.90543 170.5128205 339.52991 2.465849387 1.63923 179.4871795 2.185639229 189.957265 1.821366025 190.7051282 1.737302977 204.1666667 1.246935201 210.1495726 1.022767075 219.8717949 0.65849387 230.3418803 0.210157618 234.8290598 -0.014010508 |
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