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saji鐵蟲 (初入文壇)
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[求助]
1stOpt擬合代碼的問題求助 已有2人參與
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各位前輩： 小弟使用1stopt擬合一等式，原始形式如下： 得到的擬合結(jié)果正常，圖形如下：  但是，使用同樣的樣本，進(jìn)行變式的擬合時(shí)，卻得到怪異的圖形。。。不知問題在哪里？ 變式如下： 得到的函數(shù)圖形如下：  下面是我使用變式的擬合代碼： Title "A-share 07-Bubble LPPL Fit"; Parameters a,b,c,t,m,w,p; Variable y,x; Function (y-a)*(t-x)^-m = b+c*cos(w*ln(t-x)+p); Data; 6.941555559 1 6.938227256 2 7.017131521 3 7.030903452 4 7.010569957 5 7.008768258 6 6.997105918 7 6.978060888 8 6.990265709 9 6.98989732 10 7.017165583 11 7.004415456 12 7.004911935 13 6.997323551 14 7.004774906 15 7.025218263 16 7.010842412 17 7.007593374 18 6.985584462 19 6.961858921 20 6.953949696 21 6.946055376 22 6.94074992 23 6.945626043 24 6.925578498 25 6.919188668 26 6.952882552 27 6.944467078 28 6.947375912 29 6.933535105 30 6.919779695 31 6.922008222 32 6.928588747 33 6.928177322 34 6.953035481 35 6.952154866 36 6.978033857 37 6.993849485 38 6.990760977 39 6.987520717 40 6.992967372 41 7.006729647 42 7.01004017 43 7.00541633 44 7.028859903 45 7.037802358 46 7.049718276 47 7.060504692 48 7.076298178 49 7.062975387 50 7.079189449 51 7.070960273 52 7.084087267 53 7.045807064 54 7.047677209 55 7.054965069 56 7.047479829 57 7.06230902 58 7.066872178 59 7.066347509 60 7.051360262 61 7.044368792 62 7.058584449 63 7.077441512 64 7.08074005 65 7.086925208 66 7.067594321 67 7.085323054 68 7.085408456 69 7.08139341 70 7.080204935 71 7.096029086 72 7.104358532 73 7.104374962 74 7.100808215 75 7.10711994 76 7.100536113 77 7.080016399 78 7.056140801 79 7.04923748 80 7.051891986 81 7.032833418 82 7.031541592 83 7.052275448 84 7.052387083 85 7.037862064 86 7.05375166 87 7.057771423 88 7.049781612 89 7.038386094 90 7.031188986 91 7.039836496 92 7.034042496 93 7.035223704 94 7.039939014 95 7.039810207 96 7.022795 97 7.000481213 98 7.00104706 99 6.985518776 100 6.996514045 101 6.993887103 102 7.007412361 103 6.998758926 104 7.003106367 105 7.003656193 106 7.012247718 107 7.010449944 108 6.992373044 109 6.994111858 110 6.992696431 111 6.991644119 112 6.999322098 113 6.998792707 114 7.018400904 115 7.02102682 116 7.001841983 117 7.008275499 118 7.015150324 119 7.016534345 120 7.012856461 121 7.000321698 122 7.002393415 123 7.001925719 124 6.997858289 125 6.983972525 126 6.991907071 127 7.002715398 128 7.00153975 129 7.015242831 130 7.017834942 131 7.019158898 132 7.025882255 133 7.024253045 134 7.027765167 135 7.03152127 136 7.03556961 137 7.030644368 138 7.0345976 139 7.043047246 140 7.053432734 141 7.051238983 142 7.053615113 143 7.064641072 144 7.057086076 145 7.074085486 146 7.087798409 147 7.097897839 148 7.103048999 149 7.107112567 150 7.099245508 151 7.112086177 152 7.107801325 153 7.092464816 154 7.097083896 155 7.117489323 156 7.132158836 157 7.13513624 158 7.135507395 159 7.132547071 160 7.137315003 161 7.160555492 162 7.156251518 163 7.162440132 164 7.146342166 165 7.156688207 166 7.154334067 167 7.159546149 168 7.169477799 169 7.14727048 170 7.144729149 171 7.144834871 172 7.161171164 173 7.157911481 174 7.161503299 175 7.167705864 176 7.167952582 177 7.169373111 178 7.175172908 179 7.159032151 180 7.164950051 181 7.161587092 182 7.138800331 183 7.131205983 184 7.127024133 185 7.127415169 186 7.138608236 187 7.138107982 188 7.150553996 189 7.150065962 190 7.146348468 191 7.161170388 192 7.162703652 193 7.167582482 194 7.17200776 195 7.166037377 196 7.166972288 197 7.169189111 198 7.174392708 199 7.16604819 200 7.168807144 201 7.184986178 202 7.19278233 203 7.200545781 204 7.200228605 205 7.202635135 206 7.214564015 207 7.216877608 208 7.215337033 209 7.194684568 210 7.214900215 211 7.228833926 212 7.233537726 213 7.241869022 214 7.234105027 215 7.256151146 216 7.251193199 217 7.244061073 218 7.25663381 219 7.25610809 220 7.272553242 221 7.311287854 222 7.33378155 223 7.343223751 224 7.337832996 225 7.379527344 226 7.417032505 227 7.386006677 228 7.393352937 229 7.388501623 230 7.414298747 231 7.413179743 232 7.380599869 233 7.372070258 234 7.37238512 235 7.386405171 236 7.407644114 237 7.41293781 238 7.40324389 239 7.429042984 240 7.42021896 241 7.429297672 242 7.426028699 243 7.371203091 244 7.372425963 245 7.346902715 246 7.347813744 247 7.34503877 248 7.333889959 249 7.335620944 250 7.361672081 251 7.369150714 252 7.372954887 253 7.376580714 254 7.375297131 255 7.381321928 256 7.398449009 257 7.402177703 258 7.40201606 259 7.421547299 260 7.421901982 261 7.436783427 262 7.427469482 263 7.4492391 264 7.462484863 265 7.455986508 266 7.458375874 267 7.464971619 268 7.461640392 269 7.412023248 270 7.41770532 271 7.42826605 272 7.429076827 273 7.405592923 274 7.411630001 275 7.41777738 276 7.418147209 277 7.429794396 278 7.430501964 279 7.423668738 280 7.415795627 281 7.385685534 282 7.378142585 283 7.37830376 284 7.37841994 285 7.358926435 286 7.344354647 287 7.365545249 288 7.364272119 289 7.381542367 290 7.381455816 291 7.359300852 292 7.375040843 293 7.38796292 294 7.379839243 295 7.37651939 296 7.3784774 297 7.386071141 298 7.38547655 299 7.392042042 300 7.392052516 301 7.408795986 302 7.40915098 303 7.411674106 304 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8.551135962 556 8.570467003 557 8.577757953 558 8.598107888 559 8.598811519 560 8.593276996 561 8.607045778 562 8.604228135 563 8.609774743 564 8.598935377 565 8.58270374 566 8.595894015 567 8.621967715 568 8.646949593 569 8.651005645 570 8.660681053 571 8.684947492 572 8.683260697 573 8.704516552 574 8.714741071 575 未命名.JPG error2.JPG |
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dingd
鐵桿木蟲 (職業(yè)作家)
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3樓2015-06-12 11:35:06
4樓2015-06-12 11:35:30
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Parameters a,b,c,t,m,w,p; Variable x,y; Function (y-a)*(t-x)^-m = b+c*cos(w*ln(t-x)+p); Data; 1 6.9416 2 6.9382 3 7.0171 4 7.0309 5 7.0106 ……………… 迭代數(shù): 37 計(jì)算用時(shí)(時(shí):分:秒:微秒): 00:18:40:63 優(yōu)化算法: 麥夸特法(Levenberg-Marquardt) + 通用全局優(yōu)化法 計(jì)算結(jié)束原因: 達(dá)到收斂判斷標(biāo)準(zhǔn) 均方差(RMSE): 4.65595587544745E-14 殘差平方和(SSE): 1.24648069406153E-24 相關(guān)系數(shù)(R): 1 相關(guān)系數(shù)之平方(R^2): 1 決定系數(shù)(DC): 1 卡方系數(shù)(Chi-Square): 8.72434972578136E-26 F統(tǒng)計(jì)(F-Statistic): -4.30093764413883E17 參數(shù) 最佳估算 ---------- ------------- a 2.50176168046892 b -1.22882102188015E-13 c -1.55820635860655E-13 t 762.35234096126 m 9.63049718398193 w 1.73070665931322 p 5.69063841038279 ====== 結(jié)果輸出 ===== No 實(shí)測(cè)值y 計(jì)算值y 1 6.9416 6.9416000 2 6.9382 6.9382000 3 7.0171 7.0171000 4 7.0309 7.0309000 5 7.0106 7.0106000 6 7.0088 7.0088000 7 6.9971 6.9971000 8 6.9781 6.9781000 9 6.9903 6.9903000 10 6.9899 6.9899000 11 7.0172 7.0172000 |
5樓2015-06-12 11:54:10
saji
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6樓2015-06-12 13:26:16
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