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@ -173,7 +173,7 @@ We need to define the complexity of the tree ``$\Omega(f)$``. In order to do so,
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f_t(x) = w_{q(x)}, w \in R^T, q:R^d\rightarrow \{1,2,\cdots,T\} .
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```
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Here ``$ w $`` is the vector of scores on leaves, ``$ q $`` is a function assigning each data point to the corresponding leaf, and``$ T $`` is the number of leaves.
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Here ``$ w $`` is the vector of scores on leaves, ``$ q $`` is a function assigning each data point to the corresponding leaf, and ``$ T $`` is the number of leaves.
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In XGBoost, we define the complexity as
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```math
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