Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 435712
Title On the minimum volume simplex enclosure problem for estimating a linear mixing model
Author(s) Hendrix, E.M.T.; Gracía, I.; Plaza, J.; Plaza, A.
Source Journal of Global Optimization 56 (2013)3. - ISSN 0925-5001 - p. 957 - 970.
Department(s) Operations Research and Logistics
Publication type Refereed Article in a scientific journal
Publication year 2013
Abstract We describe the minimum volume simplex enclosure problem (MVSEP), which is known to be a global optimization problem, and further investigate its multimodality. The problem is a basis for several (unmixing) methods that estimate so-called endmembers and fractional values in a linear mixing model. We describe one of the estimation methods based on MVSEP. We show numerically that using nonlinear optimization local search leads to the estimation results aimed at. This is done using examples, designing instances and comparing the outcomes with a maximum volume enclosing simplex approach which is used frequently in unmixing data.
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