# tf.keras.backend.set_epsilon

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| [![](https://www.tensorflow.org/images/GitHub-Mark-32px.png) View source on GitHub](https://github.com/keras-team/keras/tree/v2.13.1/keras/backend_config.py#L47-L63) |

Sets the value of the fuzz factor used in numeric expressions.

#### View aliases


**Compat aliases for migration**

See
[Migration guide](https://www.tensorflow.org/guide/migrate) for
more details.

\`tf.compat.v1.keras.backend.set_epsilon\`

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    tf.keras.backend.set_epsilon(
        value
    )

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| ## Args ||
|---|---|
| `value` | float. New value of epsilon. |

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#### Example:

    tf.keras.backend.epsilon()
    1e-07
    tf.keras.backend.set_epsilon(1e-5)
    tf.keras.backend.epsilon()
    1e-05
    tf.keras.backend.set_epsilon(1e-7)