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hua99dushu鐵蟲 (小有名氣)
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[求助]
求版主幫忙跑下面的1stopt的程序,參數(shù)估計。 已有1人參與
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[/code]Title "test 1"; Parameters a1[0,],a2[0,],a3[0,],b1[0,],b2[0,],b3[0,],c1[0,],c2[0,],c3[0,],M[1.5,],C[y,],E[z,],N[1.5,]; Sharedmodel; Variable t, x,y,z; Function x'=a1*x*(y/M-1)-a2*y+a3*z; y'=-b1*x+b2*y*(1-y/C)+b3*z*(1-z/E); z'=c1*x*(x/N-1)-c2*y-c3*z; RowData: x=[1.0000,1.0777,1.1443,1.3497,1.5881,1.9814,2.1905,2.5799,2.9763,3.2445,3.5765,3.9315]; y=[1.0000,1.0597,1.0982,1.2035,1.3566,1.4610,1.4771,1.4862,1.6052,1.6094,1.8892,2.0334]; z=[1.0000,1.0920,1.2033,1.4031,1.6920,1.9382,2.2159,2.6186,2.9489,3.1536,3.5979,4.0233]; 感謝小木蟲論壇,感謝斑竹們的耐心幫忙。 |
鐵桿木蟲 (職業(yè)作家)
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參考: 均方差(RMSE):0.054186898245058 殘差平方和(SSE):0.096895258066869 相關(guān)系數(shù)(R): 0.990468602959854 相關(guān)系數(shù)之平方(R^2): 0.981028053449245 確定系數(shù)(DC): 0.981119298577706 F統(tǒng)計(F-Statistic): -68.497450670183 參數(shù) 最佳估算 -------------------- ------------- a1 0.934922929556056 a2 43.1779982925144 a3 0.634247035099968 b1 0.885424066820235 b2 1.72323467449167E-14 b3 1.64537787581792 c1 7.17385064510645E-11 c2 47.0215125361918 c3 0.0444107007235367 m 0.4861243914792 c 0.00874309356262975 e 201.823147971463 n 5.99589073558176 ====== 結(jié)果輸出 ====== 文件: 數(shù)據(jù)文件-1 No t 目標 x 計算 x 目標 y 計算 y 目標 z 計算 z 1 1 1.0777 1.03073467525285 1.0597 1.06691160587989 1.092 1.06234022501214 2 2 1.1443 1.18178677578727 1.0982 1.1387423298674 1.2033 1.22168768708318 3 3 1.3497 1.39065370562373 1.2035 1.21472123201098 1.4031 1.43111557008028 4 4 1.5881 1.63651472709221 1.3566 1.29454185100693 1.692 1.67502754880883 5 5 1.9814 1.91230103994829 1.461 1.37802854578025 1.9382 1.94813144944932 6 6 2.1905 2.21483623814851 1.4771 1.46501620348821 2.2159 2.24783814736362 7 7 2.5799 2.54118886530888 1.4862 1.5553142562366 2.6186 2.57123967133884 8 8 2.9763 2.88710686907347 1.6052 1.64870518739119 2.9489 2.91357690174086 9 9 3.2445 3.2461270702916 1.6094 1.74495815962043 3.1536 3.26712262655401 10 10 3.5765 3.60891777176678 1.8892 1.84385184177429 3.5979 3.62014395661707 11 11 3.9315 3.96272367218441 2.0334 1.9451949237521 4.0233 3.95587454727496 |
鐵蟲 (小有名氣)
鐵蟲 (小有名氣)
鐵桿木蟲 (職業(yè)作家)
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參考下: 均方差(RMSE):0.0743428646356062 殘差平方和(SSE):0.182386430233526 相關(guān)系數(shù)(R): 0.990490604242565 相關(guān)系數(shù)之平方(R^2): 0.981071637092801 確定系數(shù)(DC): 0.97907392333002 F統(tǒng)計(F-Statistic): -17.029556181244 參數(shù) 最佳估算 -------------------- ------------- a1 1.30190551784766 a2 4.06003441093189 a3 0.869490127930172 b1 9.42946312355037 b2 1.57560369388824 b3 5.9857438663248 c1 0.0249019284686679 c2 13.4132204832955 c3 9.74396616982886E-6 m 332.144120934994 c 22.8549320352576 e 45695.8913468096 n 1.78908285577578 ====== 結(jié)果輸出 ====== 文件: 數(shù)據(jù)文件-1 No t 目標 x 計算 x 目標 y 計算 y 目標 z 計算 z 1 1 1.0777 1.13953501723234 1.0597 1.05984607578657 1.092 1.13757057269921 2 2 1.1443 1.30021884916371 1.0982 1.12347532732008 1.2033 1.29904743776794 3 3 1.3497 1.48448399130672 1.2035 1.19141949444282 1.4031 1.48688285600025 4 4 1.5881 1.69476430026936 1.3566 1.26432646601749 1.692 1.70323733352619 5 5 1.9814 1.93339002993677 1.461 1.34297964122961 1.9382 1.94974242279121 6 6 2.1905 2.20245049650347 1.4771 1.42831743928452 2.2159 2.22719556655783 7 7 2.5799 2.50362263043615 1.4862 1.52145197784229 2.6186 2.5351804050362 8 8 2.9763 2.8379668528597 1.6052 1.62368427128187 2.9489 2.87161074307044 9 9 3.2445 3.20569653533687 1.6094 1.73651368452624 3.1536 3.23220275868481 10 10 3.5765 3.60593368625635 1.8892 1.8616395305816 3.5979 3.60988868394394 11 11 3.9315 4.03647149994331 2.0334 2.00094968015341 4.0233 3.99419780445337 |
鐵蟲 (小有名氣)
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真的很感謝你如此迅速的回復,多次認真的解答我的問題。 根據(jù)實際的條件,已經(jīng)確定了一些參數(shù)。 [/CODE] Parameters a1=[0,],a2=[0,],a3=[0,],b1=[0,],b2=[0,],b3=[0,],c1=[0,],c2=[0,],c3=[0,]; Variable t,x,y,z; ODEFunction x'=a1*x*(y/33.214-1)-a2*y+a3*z; y'=-b1*x+b2*y*(1-y/22.854)+b3*z*(1-z/45.695); z'=c1*x*(x/1.789-1)-c2*y-c3*z; Data; t=[0:1:12]; x=[1.0000,1.0777,1.1443,1.3497,1.5881,1.9814,2.1905,2.5799,2.9763,3.2445,3.5765,3.9315]; y=[1.0000,1.0597,1.0982,1.2035,1.3566,1.4610,1.4771,1.4862,1.6052,1.6094,1.8892,2.0334]; z=[1.0000,1.0920,1.2033,1.4031,1.6920,1.9382,2.2159,2.6186,2.9489,3.1536,3.5979,4.0233]; 求幫忙再跑一下上面的代碼,還有就是是采用的什么算法。 |
鐵蟲 (小有名氣)
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