skbio.diversity.alpha.
simpson_e
(counts)[source]¶Calculate Simpson’s evenness measure E.
State: Experimental as of 0.4.0.
Simpson’s E is defined as
where \(D\) is dominance and \(S_{obs}\) is the number of observed OTUs.
Parameters: | counts (1-D array_like, int) – Vector of counts. |
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Returns: | Simpson’s evenness measure E. |
Return type: | double |
See also
Notes
The implementation here is based on the description given in [1].
References
[1] | http://www.tiem.utk.edu/~gross/bioed/bealsmodules/simpsonDI.html |