Unmixing highly mixed grain size distribution data via maximum volume constrained end member analysis

Qianqian Qi; Zhongming Chen; Peter G. M. van der Heijden

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arXiv · 2601.00154

Unmixing highly mixed grain size distribution data via maximum volume constrained end member analysis

Qianqian Qi·Zhongming Chen·Peter G. M. van der Heijden

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Abstract

End member analysis (EMA) unmixes grain size distribution (GSD) data into a mixture of end members (EMs), thus helping understand sediment provenance and depositional regimes and processes. In highly mixed data sets, however, many EMA algorithms find EMs which are still a mixture of true EMs. To overcome this, we propose maximum volume constrained EMA (MVC-EMA), which finds EMs as different as possible. We provide a uniqueness theorem and a quadratic programming algorithm for MVC-EMA. Experimental results show that MVC-EMA can effectively find true EMs in highly mixed data sets.

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BibTeX RIS

Qianqian Qi, Zhongming Chen, Peter G. M. van der Heijden. 2026-01-01. Unmixing highly mixed grain size distribution data via maximum volume constrained end member analysis. https://arxiv.org/abs/2601.00154

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