UniODA vs. Bray-Curtis Dissimilarity Index for Count Data

Paul R. Yarnold

Optimal Data Analysis, LLC

The Bray-Curtis dissimilarity index is widely-used as an index of the magnitude of compositional dissimilarity in the count of different categories between two samples, yet it fails to address the statistical reliability of the dissimilarity, the precise nature of the dissimilarity, and the potential cross-generalizability of the findings. All of these shortcomings are remedied by the use of UniODA in this application.

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