Initializer that generates an orthogonal matrix.

Inherits From: `Initializer`

tf.compat.v2.keras.initializers.Orthogonal( gain=1.0, seed=None )

If the shape of the tensor to initialize is two-dimensional, it is initialized with an orthogonal matrix obtained from the QR decomposition of a matrix of random numbers drawn from a normal distribution. If the matrix has fewer rows than columns then the output will have orthogonal rows. Otherwise, the output will have orthogonal columns.

If the shape of the tensor to initialize is more than two-dimensional, a matrix of shape `(shape[0] * ... * shape[n - 2], shape[n - 1])`

is initialized, where `n`

is the length of the shape vector. The matrix is subsequently reshaped to give a tensor of the desired shape.

Args | |
---|---|

`gain` | multiplicative factor to apply to the orthogonal matrix |

`seed` | A Python integer. Used to create random seeds. See `tf.compat.v1.set_random_seed` for behavior. |

`from_config`

@classmethod from_config( config )

Instantiates an initializer from a configuration dictionary.

initializer = RandomUniform(-1, 1) config = initializer.get_config() initializer = RandomUniform.from_config(config)

Args | |
---|---|

`config` | A Python dictionary. It will typically be the output of `get_config` . |

Returns | |
---|---|

An Initializer instance. |

`get_config`

get_config()

Returns the configuration of the initializer as a JSON-serializable dict.

Returns | |
---|---|

A JSON-serializable Python dict. |

`__call__`

__call__( shape, dtype=tf.dtypes.float32 )

Returns a tensor object initialized as specified by the initializer.

Args | |
---|---|

`shape` | Shape of the tensor. |

`dtype` | Optional dtype of the tensor. Only floating point types are supported. |

Raises | |
---|---|

`ValueError` | If the dtype is not floating point or the input shape is not valid. |

© 2020 The TensorFlow Authors. All rights reserved.

Licensed under the Creative Commons Attribution License 3.0.

Code samples licensed under the Apache 2.0 License.

https://www.tensorflow.org/versions/r1.15/api_docs/python/tf/compat/v2/keras/initializers/Orthogonal