| Abstract: | An extended form of the method of Q-mode factor analysis may be used if the rows of the data matrix sum to a constant. The constant row-sum provides a means for scaling the factor model to conform to the units of the original data in such forms as proportions, percentages, or parts per million. The scale factors for an m-factor model are used to derive composition scores and loadings, which lead to the same reproduced data regardless of the choice of reference axes (end-members). Factor-variance diagrams may be constructed to show the proportion of the variance that will be accounted for in each compositional variable by models containing various numbers of end-members. The method may be used to develop a petrologic mixing model by searching for end-members that are geologically plausible. ?? 1976. |
| Genre: | Article |
| ProdID: | 70010337 |
| Citation Author: | Miesch, A. T. |
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| Citation End Page: | 159 |
| Citation Issue: | 3 |
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| Citation Language: | English |
| Citation Larger Work Title: | Computers and Geosciences |
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| Citation Number Of Pages: | 13 |
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| Citation Publisher: | Elsevier |
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| Citation Search Results Text: | Q-mode factor analysis of compositional data; 1976; Article; Journal; Computers and Geosciences; Miesch, A. T. |
| Citation Start Page: | 147 |
| Citation Volume: | 1 |
| Citation Year: | 1976 |
| Type: | citation/reference |
| Text: | Q-mode factor analysis of compositional data; 1976; Article; Journal; Computers and Geosciences; Miesch, A. T. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1016/0098-3004(76)90003-0 |
| Date Other: | Thu, 1 Jan 1976 00:00 -0600 |
| Publisher: | Elsevier |
