`Dense`

class```
tf.keras.layers.Dense(
units,
activation=None,
use_bias=True,
kernel_initializer="glorot_uniform",
bias_initializer="zeros",
kernel_regularizer=None,
bias_regularizer=None,
activity_regularizer=None,
kernel_constraint=None,
bias_constraint=None,
**kwargs
)
```

Just your regular densely-connected NN layer.

`Dense`

implements the operation:
`output = activation(dot(input, kernel) + bias)`

where `activation`

is the element-wise activation function
passed as the `activation`

argument, `kernel`

is a weights matrix
created by the layer, and `bias`

is a bias vector created by the layer
(only applicable if `use_bias`

is `True`

). These are all attributes of
`Dense`

.

Note: If the input to the layer has a rank greater than 2, then `Dense`

computes the dot product between the `inputs`

and the `kernel`

along the
last axis of the `inputs`

and axis 0 of the `kernel`

(using `tf.tensordot`

).
For example, if input has dimensions `(batch_size, d0, d1)`

, then we create
a `kernel`

with shape `(d1, units)`

, and the `kernel`

operates along axis 2
of the `input`

, on every sub-tensor of shape `(1, 1, d1)`

(there are
`batch_size * d0`

such sub-tensors). The output in this case will have
shape `(batch_size, d0, units)`

.

Besides, layer attributes cannot be modified after the layer has been called
once (except the `trainable`

attribute).
When a popular kwarg `input_shape`

is passed, then keras will create
an input layer to insert before the current layer. This can be treated
equivalent to explicitly defining an `InputLayer`

.

**Example**

```
>>> # Create a `Sequential` model and add a Dense layer as the first layer.
>>> model = tf.keras.models.Sequential()
>>> model.add(tf.keras.Input(shape=(16,)))
>>> model.add(tf.keras.layers.Dense(32, activation='relu'))
>>> # Now the model will take as input arrays of shape (None, 16)
>>> # and output arrays of shape (None, 32).
>>> # Note that after the first layer, you don't need to specify
>>> # the size of the input anymore:
>>> model.add(tf.keras.layers.Dense(32))
>>> model.output_shape
(None, 32)
```

**Arguments**

**units**: Positive integer, dimensionality of the output space.**activation**: Activation function to use. If you don't specify anything, no activation is applied (ie. "linear" activation:`a(x) = x`

).**use_bias**: Boolean, whether the layer uses a bias vector.**kernel_initializer**: Initializer for the`kernel`

weights matrix.**bias_initializer**: Initializer for the bias vector.**kernel_regularizer**: Regularizer function applied to the`kernel`

weights matrix.**bias_regularizer**: Regularizer function applied to the bias vector.**activity_regularizer**: Regularizer function applied to the output of the layer (its "activation").**kernel_constraint**: Constraint function applied to the`kernel`

weights matrix.**bias_constraint**: Constraint function applied to the bias vector.

**Input shape**

N-D tensor with shape: `(batch_size, ..., input_dim)`

.
The most common situation would be
a 2D input with shape `(batch_size, input_dim)`

.

**Output shape**

N-D tensor with shape: `(batch_size, ..., units)`

.
For instance, for a 2D input with shape `(batch_size, input_dim)`

,
the output would have shape `(batch_size, units)`

.