# tf.keras.backend.eye

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|---|---|
| [![](https://www.tensorflow.org/images/tf_logo_32px.png) TensorFlow 1 version](https://www.tensorflow.org/versions/r1.15/api_docs/python/tf/keras/backend/eye) | [![](https://www.tensorflow.org/images/GitHub-Mark-32px.png) View source on GitHub](https://github.com/tensorflow/tensorflow/blob/v2.0.0/tensorflow/python/keras/backend.py#L1349-L1375) |

Instantiate an identity matrix and returns it.

#### View aliases


**Compat aliases for migration**

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

[`tf.compat.v1.keras.backend.eye`](https://www.tensorflow.org/api_docs/python/tf/keras/backend/eye)

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    tf.keras.backend.eye(
        size, dtype=None, name=None
    )

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| ## Arguments ||
|---|---|
| `size` | Integer, number of rows/columns. |
| `dtype` | String, data type of returned Keras variable. |
| `name` | String, name of returned Keras variable. |

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| ## Returns ||
|---|---|
| A Keras variable, an identity matrix. ||

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#### Example:

        from keras import backend as K
        kvar = K.eye(3)
        K.eval(kvar)
            array([[ 1.,  0.,  0.],
                   [ 0.,  1.,  0.],
                   [ 0.,  0.,  1.]], dtype=float32)