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Variables used in batch normalization.
| Parameter | Meaning |
|---|---|
| z | The output of a layer |
| znorm | The normalization of z |
| ~li | Input of the non-linearity layer |
| α | Mean value of the minibatch |
| δ2 | Variance of the minibatch |
| l | Layer index |
| i | ith data in the mini batch |
| ε | A small constant |
| m | The number of samples of the minibatch |
