skbio.diversity.alpha.
esty_ci
(counts)[source]¶Calculate Esty’s CI.
State: Experimental as of 0.4.0.
Esty’s CI is defined as
where \(F_1\) is the number of singleton OTUs, \(N\) is the total number of individuals (sum of abundances for all OTUs), and \(z\) is a constant that depends on the targeted confidence and based on the normal distribution.
\(W\) is defined as
where \(F_2\) is the number of doubleton OTUs.
Parameters: | counts (1-D array_like, int) – Vector of counts. |
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Returns: | Esty’s confidence interval as (lower_bound, upper_bound) . |
Return type: | tuple |
Notes
Esty’s CI is defined in [1]. \(z\) is hardcoded for a 95% confidence interval.
References
[1] | Esty, W. W. (1983). “A normal limit law for a nonparametric estimator of the coverage of a random sample”. Ann Statist 11: 905-912. |