Update Operators.md

Change the formula of BatchNorm Op

docs/Operators.md

@@ -153,9 +153,7 @@ rank as the input. This is the reverse transformation of Space2Batch.
 Carries out batch normalization as described in the paper
 https://arxiv.org/abs/1502.03167.
 
-$$\hat x_i\leftarrow \frac{x_i-\mu_\mathcal{B}}{\sqrt{\sigma_\mathcal{B}^2+\epsilon}}$$
-
-$$y_i=\gamma\hat x_i+\beta\equiv BN_{\gamma,\beta}(x_i)$$
+Y = (X - Mean) / Sqrt( Var + Eps) * Gama + Beta
 
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@@ -767,4 +765,4 @@ how to bind input/output: take unidirectional_sequence_lstm_test.cc
 
 Unpacks the given dimension of a rank-R tensor into rank-(R-1) tensors.
 - axis : An int. The axis to unstack along. Defaults to the first dimension.
-Negative values wrap around, so the valid range is [-R, R).
+Negative values wrap around, so the valid range is [-R, R).