Correction to: Detect tissue heterogeneity in gene expression data with BioQC

Correction

After the publication of this work [1], a mistake was noticed in the Eq. 1. Given an m  ×  n expression matrix with m genes and samples of n tissues, the correct definition of the Gini index for gene i is:

$$G_i=\frac{1}{n}\left(n+1-2\left(\frac{{\sum }_{j=1}^n\left(n+1-j\right)x_{\mathit{ij}}^{\prime }}{{\sum }_{j=1}^n{x}_{\mathit{ij}}^{\prime }}\right)\right),$$ 1

where $x_{\mathit{ij}}^{\prime }$ is the jth value in the non-descending ordered vector of x_i⋅(i = 1, …, m, j = 1, …, n). In the original version of the manuscript, the variable j in the parentheses of the nominator was erroneously written as i.

The authors apologize for the mistake and thank Mr. Tao Fang for pointing out this mistake.