DOC fix TeX error in Davies Bouldin formula

scikit-learn · Nov 19, 2018 · 9ecada8 · 9ecada8
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commit 9ecada8
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/doc/modules/clustering.rst b/doc/modules/clustering.rst
@@ -1748,7 +1748,7 @@ symmetric is:
 Then the Davies-Bouldin index is defined as:
 
 .. math::
-   DB = \frac{1}{k} \sum{i=1}^k \max_{i \neq j} R_{ij}
+   DB = \frac{1}{k} \sum_{i=1}^k \max_{i \neq j} R_{ij}
 
 Zero is the lowest possible score. Values closer to zero indicate a better
 partition.