| SPLITTING OF CALIBRATION DATA BY CLUSTER ANALYSIS |
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| 作者姓名： | TORMODNAES TOMASISAKSSON |
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| 作者单位： | Matforsk Oslovegen I，N-1430 As，Norway，Matforsk，Oslovegen I，N-1430 As，Norway |
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| 摘 要： | from eorresponding valuesof x.The most eommon aPProaeh to this Problem 15 linear regression(or ealibration),but1 inear methods are usually best suited for quite limited regions alld are not generallyaPPlieable.If a linear fit 15 not satisfactory,alternative aPProaehes are non一linear regression,non一Parametrie regression,transformations and sPlitting of the data into subgrouPs
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SPLITTING OF CALIBRATION DATA BY CLUSTER ANALYSIS |
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| TORMODNAES,TOMASISAKSSON.SPLITTING OF CALIBRATION DATA BY CLUSTER ANALYSIS[J].Journal of Geographical Sciences,1991(1). |
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| Authors: | TORMOD NAES TOMAS ISAKSSON Matforsk Oslovegen l N- s Norway |
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| Abstract: | The topic of the present paper is the splitting of calibration data into subgroups with improved linearity in each group.The method proposed is based on a criterion which is a weighted average of a Mahalanobis distance and a squared regression residual.The algorithm used to find the solution is based on fuzzy clustering.Two examples are given to illustrate the theory. |
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| Keywords: | Calibration Cluster analysis Local linearity Mahalanobis distance Residual distance |
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