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keras (version 2.9.0)

R Interface to 'Keras'

Description

Interface to 'Keras' , a high-level neural networks 'API'. 'Keras' was developed with a focus on enabling fast experimentation, supports both convolution based networks and recurrent networks (as well as combinations of the two), and runs seamlessly on both 'CPU' and 'GPU' devices.

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install.packages('keras')

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Version

2.9.0

License

MIT + file LICENSE

Last Published

May 23rd, 2022

Functions in keras (2.9.0)

KerasWrapper

(Deprecated) Base R6 class for Keras wrappers
KerasLayer

(Deprecated) Base R6 class for Keras layers
Metric

Metric
application_inception_resnet_v2

Inception-ResNet v2 model, with weights trained on ImageNet
application_vgg

VGG16 and VGG19 models for Keras.
application_resnet

Instantiates the ResNet architecture
application_inception_v3

Inception V3 model, with weights pre-trained on ImageNet.
fit.keras.engine.training.Model

Train a Keras model
callback_tensorboard

TensorBoard basic visualizations
callback_remote_monitor

Callback used to stream events to a server.
export_savedmodel.keras.engine.training.Model

Export a Saved Model
callback_csv_logger

Callback that streams epoch results to a csv file
bidirectional

Bidirectional wrapper for RNNs
custom_metric

Custom metric function
callback_early_stopping

Stop training when a monitored quantity has stopped improving.
create_layer_wrapper

Create a Keras Layer wrapper
dataset_boston_housing

Boston housing price regression dataset
callback_lambda

Create a custom callback
flow_images_from_dataframe

Takes the dataframe and the path to a directory and generates batches of augmented/normalized data.
create_wrapper

(Deprecated) Create a Keras Wrapper
get_file

Downloads a file from a URL if it not already in the cache.
%<-active%

Make an Active Binding
get_config

Layer/Model configuration
hdf5_matrix

Representation of HDF5 dataset to be used instead of an R array
image_load

Loads an image into PIL format.
image_to_array

3D array representation of images
flow_images_from_directory

Generates batches of data from images in a directory (with optional augmented/normalized data)
install_keras

Install TensorFlow and Keras, including all Python dependencies
is_keras_available

Check if Keras is Available
k_any

Bitwise reduction (logical OR).
k_arange

Creates a 1D tensor containing a sequence of integers.
dataset_cifar10

CIFAR10 small image classification
dataset_cifar100

CIFAR100 small image classification
initializer_identity

Initializer that generates the identity matrix.
initializer_ones

Initializer that generates tensors initialized to 1.
initializer_lecun_normal

LeCun normal initializer.
fit_text_tokenizer

Update tokenizer internal vocabulary based on a list of texts or list of sequences.
k_abs

Element-wise absolute value.
initializer_lecun_uniform

LeCun uniform initializer.
k_all

Bitwise reduction (logical AND).
flow_images_from_data

Generates batches of augmented/normalized data from image data and labels
k_elu

Exponential linear unit.
k_concatenate

Concatenates a list of tensors alongside the specified axis.
k_clip

Element-wise value clipping.
k_dtype

Returns the dtype of a Keras tensor or variable, as a string.
application_nasnet

Instantiates a NASNet model.
callback_model_checkpoint

Save the model after every epoch.
callback_learning_rate_scheduler

Learning rate scheduler.
application_mobilenet_v3

Instantiates the MobileNetV3Large architecture
k_expand_dims

Adds a 1-sized dimension at index axis.
k_cos

Computes cos of x element-wise.
k_eye

Instantiate an identity matrix and returns it.
k_get_value

Returns the value of a variable.
get_weights

Layer/Model weights as R arrays
create_layer

Create a Keras Layer
dataset_reuters

Reuters newswire topics classification
dataset_mnist

MNIST database of handwritten digits
count_params

Count the total number of scalars composing the weights.
fit_generator

(Deprecated) Fits the model on data yielded batch-by-batch by a generator.
initializer_glorot_normal

Glorot normal initializer, also called Xavier normal initializer.
%py_class%

Make a python class constructor
initializer_glorot_uniform

Glorot uniform initializer, also called Xavier uniform initializer.
k_count_params

Returns the static number of elements in a Keras variable or tensor.
initializer_zeros

Initializer that generates tensors initialized to 0.
initializer_variance_scaling

Initializer capable of adapting its scale to the shape of weights.
k_ctc_label_dense_to_sparse

Converts CTC labels from dense to sparse.
k_l2_normalize

Normalizes a tensor wrt the L2 norm alongside the specified axis.
k_get_variable_shape

Returns the shape of a variable.
fit_image_data_generator

Fit image data generator internal statistics to some sample data.
k_batch_dot

Batchwise dot product.
k_backend

Active Keras backend
imagenet_preprocess_input

Preprocesses a tensor or array encoding a batch of images.
get_layer

Retrieves a layer based on either its name (unique) or index.
get_input_at

Retrieve tensors for layers with multiple nodes
imagenet_decode_predictions

Decodes the prediction of an ImageNet model.
initializer_random_uniform

Initializer that generates tensors with a uniform distribution.
k_cumprod

Cumulative product of the values in a tensor, alongside the specified axis.
k_learning_phase

Returns the learning phase flag.
k_exp

Element-wise exponential.
k_eval

Evaluates the value of a variable.
k_get_session

TF session to be used by the backend.
adapt

Fits the state of the preprocessing layer to the data being passed
application_mobilenet_v2

MobileNetV2 model architecture
callback_reduce_lr_on_plateau

Reduce learning rate when a metric has stopped improving.
application_mobilenet

MobileNet model architecture.
activation_relu

Activation functions
k_bias_add

Adds a bias vector to a tensor.
callback_progbar_logger

Callback that prints metrics to stdout.
k_get_uid

Get the uid for the default graph.
initializer_truncated_normal

Initializer that generates a truncated normal distribution.
k_ones_like

Instantiates an all-ones variable of the same shape as another tensor.
k_local_conv2d

Apply 2D conv with un-shared weights.
k_local_conv1d

Apply 1D conv with un-shared weights.
k_ones

Instantiates an all-ones tensor variable and returns it.
k_batch_normalization

Applies batch normalization on x given mean, var, beta and gamma.
k_argmax

Returns the index of the maximum value along an axis.
k_argmin

Returns the index of the minimum value along an axis.
k_sin

Computes sin of x element-wise.
k_sparse_categorical_crossentropy

Categorical crossentropy with integer targets.
k_pool2d

2D Pooling.
k_pool3d

3D Pooling.
k_softmax

Softmax of a tensor.
k_batch_set_value

Sets the values of many tensor variables at once.
k_constant

Creates a constant tensor.
k_in_test_phase

Selects x in test phase, and alt otherwise.
k_binary_crossentropy

Binary crossentropy between an output tensor and a target tensor.
constraints

Weight constraints
dataset_imdb

IMDB Movie reviews sentiment classification
dataset_fashion_mnist

Fashion-MNIST database of fashion articles
initializer_he_normal

He normal initializer.
compile.keras.engine.training.Model

Configure a Keras model for training
k_epsilon

Fuzz factor used in numeric expressions.
k_conv1d

1D convolution.
k_in_top_k

Returns whether the targets are in the top k predictions.
k_conv3d

3D convolution.
k_log

Element-wise log.
k_logsumexp

(Deprecated) Computes log(sum(exp(elements across dimensions of a tensor))).
initializer_he_uniform

He uniform variance scaling initializer.
k_equal

Element-wise equality between two tensors.
layer_activation_elu

Exponential Linear Unit.
k_switch

Switches between two operations depending on a scalar value.
k_tanh

Element-wise tanh.
k_spatial_2d_padding

Pads the 2nd and 3rd dimensions of a 4D tensor.
layer_attention

Creates attention layer
layer_activation_leaky_relu

Leaky version of a Rectified Linear Unit.
layer_alpha_dropout

Applies Alpha Dropout to the input.
k_foldl

Reduce elems using fn to combine them from left to right.
k_gradients

Returns the gradients of variables w.r.t. loss.
k_foldr

Reduce elems using fn to combine them from right to left.
layer_conv_3d

3D convolution layer (e.g. spatial convolution over volumes).
layer_conv_3d_transpose

Transposed 3D convolution layer (sometimes called Deconvolution).
k_moving_average_update

Compute the moving average of a variable.
k_repeat

Repeats a 2D tensor.
k_sigmoid

Element-wise sigmoid.
k_relu

Rectified linear unit.
k_minimum

Element-wise minimum of two tensors.
initializer_orthogonal

Initializer that generates a random orthogonal matrix.
k_cumsum

Cumulative sum of the values in a tensor, alongside the specified axis.
k_conv3d_transpose

3D deconvolution (i.e. transposed convolution).
k_cast

Casts a tensor to a different dtype and returns it.
initializer_random_normal

Initializer that generates tensors with a normal distribution.
k_sign

Element-wise sign.
k_in_train_phase

Selects x in train phase, and alt otherwise.
k_manual_variable_initialization

Sets the manual variable initialization flag.
k_greater

Element-wise truth value of (x > y).
k_int_shape

Returns the shape of tensor or variable as a list of int or NULL entries.
k_depthwise_conv2d

Depthwise 2D convolution with separable filters.
k_identity

Returns a tensor with the same content as the input tensor.
k_softsign

Softsign of a tensor.
k_softplus

Softplus of a tensor.
k_is_sparse

Returns whether a tensor is a sparse tensor.
k_image_data_format

Default image data format convention ('channels_first' or 'channels_last').
k_cast_to_floatx

Cast an array to the default Keras float type.
k_not_equal

Element-wise inequality between two tensors.
k_one_hot

Computes the one-hot representation of an integer tensor.
k_map_fn

Map the function fn over the elements elems and return the outputs.
k_conv2d_transpose

2D deconvolution (i.e. transposed convolution).
k_conv2d

2D convolution.
k_flatten

Flatten a tensor.
application_efficientnet

Instantiates the EfficientNetB0 architecture
application_densenet

Instantiates the DenseNet architecture.
application_xception

Instantiates the Xception architecture
layer_cudnn_gru

backend

Keras backend tensor engine
k_placeholder

Instantiates a placeholder tensor and returns it.
k_permute_dimensions

Permutes axes in a tensor.
k_truncated_normal

Returns a tensor with truncated random normal distribution of values.
layer_dense

Add a densely-connected NN layer to an output
k_unstack

Unstack rank R tensor into a list of rank R-1 tensors.
callback_terminate_on_naan

Callback that terminates training when a NaN loss is encountered.
k_repeat_elements

Repeats the elements of a tensor along an axis.
k_reset_uids

Reset graph identifiers.
layer_conv_lstm_1d

1D Convolutional LSTM
k_set_value

Sets the value of a variable, from an R array.
layer_category_encoding

A preprocessing layer which encodes integer features.
k_variable

Instantiates a variable and returns it.
clone_model

Clone a model instance.
evaluate_generator

(Deprecated) Evaluates the model on a data generator.
evaluate.keras.engine.training.Model

Evaluate a Keras model
freeze_weights

Freeze and unfreeze weights
generator_next

Retrieve the next item from a generator
k_shape

Returns the symbolic shape of a tensor or variable.
k_less

Element-wise truth value of (x < y).
k_random_normal_variable

Instantiates a variable with values drawn from a normal distribution.
k_less_equal

Element-wise truth value of (x <= y).
k_is_tensor

Returns whether x is a symbolic tensor.
k_floatx

Default float type
k_greater_equal

Element-wise truth value of (x >= y).
k_stack

Stacks a list of rank R tensors into a rank R+1 tensor.
keras_model_sequential

Keras Model composed of a linear stack of layers
layer_cudnn_lstm

k_hard_sigmoid

Segment-wise linear approximation of sigmoid.
k_zeros

Instantiates an all-zeros variable and returns it.
layer_global_average_pooling_1d

Global average pooling operation for temporal data.
layer_activation_selu

Scaled Exponential Linear Unit.
layer_dot

Layer that computes a dot product between samples in two tensors.
layer_global_max_pooling_1d

Global max pooling operation for temporal data.
layer_discretization

A preprocessing layer which buckets continuous features by ranges.
k_stop_gradient

Returns variables but with zero gradient w.r.t. every other variable.
k_sum

Sum of the values in a tensor, alongside the specified axis.
k_std

Standard deviation of a tensor, alongside the specified axis.
k_mean

Mean of a tensor, alongside the specified axis.
k_normalize_batch_in_training

Computes mean and std for batch then apply batch_normalization on batch.
k_ndim

Returns the number of axes in a tensor, as an integer.
k_min

Minimum value in a tensor.
image_dataset_from_directory

Create a dataset from a directory
implementation

Keras implementation
image_data_generator

Generate batches of image data with real-time data augmentation. The data will be looped over (in batches).
layer_masking

Masks a sequence by using a mask value to skip timesteps.
layer_global_max_pooling_2d

Global max pooling operation for spatial data.
layer_multiply

Layer that multiplies (element-wise) a list of inputs.
layer_max_pooling_1d

Max pooling operation for temporal data.
layer_multi_head_attention

MultiHeadAttention layer
keras-package

R interface to Keras
k_random_normal

Returns a tensor with normal distribution of values.
k_resize_images

Resizes the images contained in a 4D tensor.
k_reshape

Reshapes a tensor to the specified shape.
k_update_sub

Update the value of x by subtracting decrement.
k_zeros_like

Instantiates an all-zeros variable of the same shape as another tensor.
layer_gru_cell

Cell class for the GRU layer
keras_model

Keras Model
k_print_tensor

Prints message and the tensor value when evaluated.
k_pow

Element-wise exponentiation.
k_var

Variance of a tensor, alongside the specified axis.
layer_activation

Apply an activation function to an output.
layer_batch_normalization

Batch normalization layer (Ioffe and Szegedy, 2014).
layer_resizing

Image resizing layer
layer_rnn

Base class for recurrent layers
layer_activation_thresholded_relu

Thresholded Rectified Linear Unit.
k_reverse

Reverse a tensor along the specified axes.
k_resize_volumes

Resizes the volume contained in a 5D tensor.
initializer_constant

Initializer that generates tensors initialized to a constant value.
k_set_learning_phase

Sets the learning phase to a fixed value.
k_squeeze

Removes a 1-dimension from the tensor at index axis.
k_separable_conv2d

2D convolution with separable filters.
k_square

Element-wise square.
k_batch_flatten

Turn a nD tensor into a 2D tensor with same 1st dimension.
k_batch_get_value

Returns the value of more than one tensor variable.
layer_spatial_dropout_3d

Spatial 3D version of Dropout.
layer_lstm_cell

Cell class for the LSTM layer
layer_activation_softmax

Softmax activation function.
layer_activity_regularization

Layer that applies an update to the cost function based input activity.
layer_add

Layer that adds a list of inputs.
layer_additive_attention

Additive attention layer, a.k.a. Bahdanau-style attention
keras_model_custom

(Deprecated) Create a Keras custom model
layer_conv_lstm_2d

Convolutional LSTM.
layer_random_flip

Randomly flip each image horizontally and vertically
layer_random_height

Randomly vary the height of a batch of images during training
k_clear_session

Destroys the current TF graph and creates a new one.
k_categorical_crossentropy

Categorical crossentropy between an output tensor and a target tensor.
k_ctc_batch_cost

Runs CTC loss algorithm on each batch element.
k_temporal_padding

Pads the middle dimension of a 3D tensor.
layer_random_crop

Randomly crop the images to target height and width
layer_locally_connected_1d

Locally-connected layer for 1D inputs.
layer_locally_connected_2d

Locally-connected layer for 2D inputs.
layer_dropout

Applies Dropout to the input.
layer_simple_rnn_cell

Cell class for SimpleRNN
layer_simple_rnn

Fully-connected RNN where the output is to be fed back to input.
learning_rate_schedule_cosine_decay

A LearningRateSchedule that uses a cosine decay schedule
keras

Main Keras module
keras_array

Keras array object
k_tile

Creates a tensor by tiling x by n.
layer_activation_parametric_relu

Parametric Rectified Linear Unit.
layer_average_pooling_2d

Average pooling operation for spatial data.
layer_activation_relu

Rectified Linear Unit activation function
learning_rate_schedule_cosine_decay_restarts

A LearningRateSchedule that uses a cosine decay schedule with restarts
learning_rate_schedule_inverse_time_decay

A LearningRateSchedule that uses an inverse time decay schedule
learning_rate_schedule_exponential_decay

A LearningRateSchedule that uses an exponential decay schedule
layer_stacked_rnn_cells

Wrapper allowing a stack of RNN cells to behave as a single cell
layer_concatenate

Layer that concatenates a list of inputs.
layer_dense_features

Constructs a DenseFeatures.
layer_gaussian_noise

Apply additive zero-centered Gaussian noise.
layer_center_crop

Crop the central portion of the images to target height and width
layer_average_pooling_3d

Average pooling operation for 3D data (spatial or spatio-temporal).
layer_embedding

Turns positive integers (indexes) into dense vectors of fixed size.
layer_gru

Gated Recurrent Unit - Cho et al.
layer_global_max_pooling_3d

Global Max pooling operation for 3D data.
k_ctc_decode

Decodes the output of a softmax.
layer_random_brightness

A preprocessing layer which randomly adjusts brightness during training
metric_hinge

Computes the hinge metric between y_true and y_pred
metric_false_positives

Calculates the number of false positives
layer_hashing

A preprocessing layer which hashes and bins categorical features.
layer_lambda

Wraps arbitrary expression as a layer
layer_string_lookup

A preprocessing layer which maps string features to integer indices.
layer_unit_normalization

Unit normalization layer
layer_layer_normalization

Layer normalization layer (Ba et al., 2016).
layer_subtract

Layer that subtracts two inputs.
layer_random_contrast

Adjust the contrast of an image or images by a random factor
layer_rescaling

Multiply inputs by scale and adds offset
layer_random_zoom

A preprocessing layer which randomly zooms images during training.
k_dot

Multiplies 2 tensors (and/or variables) and returns a tensor.
layer_lstm

Long Short-Term Memory unit - Hochreiter 1997.
metric_logcosh_error

Computes the logarithm of the hyperbolic cosine of the prediction error
metric_kullback_leibler_divergence

Computes Kullback-Leibler divergence
k_gather

Retrieves the elements of indices indices in the tensor reference.
k_maximum

Element-wise maximum of two tensors.
k_is_placeholder

Returns whether x is a placeholder.
k_dropout

Sets entries in x to zero at random, while scaling the entire tensor.
k_function

Instantiates a Keras function
k_max

Maximum value in a tensor.
k_is_keras_tensor

Returns whether x is a Keras tensor.
make_sampling_table

Generates a word rank-based probabilistic sampling table.
layer_conv_2d

2D convolution layer (e.g. spatial convolution over images).
k_prod

Multiplies the values in a tensor, alongside the specified axis.
layer_reshape

Reshapes an output to a certain shape.
layer_text_vectorization

A preprocessing layer which maps text features to integer sequences.
metric_sparse_categorical_accuracy

Calculates how often predictions match integer labels
metric_sparse_categorical_crossentropy

Computes the crossentropy metric between the labels and predictions
metric_binary_accuracy

Calculates how often predictions match binary labels
metric_recall

Computes the recall of the predictions with respect to the labels
metric-or-Metric

metric-or-Metric
metric_binary_crossentropy

Computes the crossentropy metric between the labels and predictions
layer_repeat_vector

Repeats the input n times.
loss-functions

Loss functions
metric_mean_absolute_percentage_error

Computes the mean absolute percentage error between y_true and y_pred
metric_categorical_hinge

Computes the categorical hinge metric between y_true and y_pred
layer_random_rotation

Randomly rotate each image
layer_separable_conv_2d

Separable 2D convolution.
metric_mean

Computes the (weighted) mean of the given values
k_random_binomial

Returns a tensor with random binomial distribution of values.
metric_mean_absolute_error

Computes the mean absolute error between the labels and predictions
metric_true_negatives

Calculates the number of true negatives
metric_recall_at_precision

Computes best recall where precision is >= specified value
metric_squared_hinge

Computes the squared hinge metric
layer_conv_2d_transpose

Transposed 2D convolution layer (sometimes called Deconvolution).
optimizer_sgd

Stochastic gradient descent optimizer
metric_top_k_categorical_accuracy

Computes how often targets are in the top K predictions
pad_sequences

Pads sequences to the same length
optimizer_adadelta

Adadelta optimizer.
metric_sum

Computes the (weighted) sum of the given values
optimizer_adagrad

Adagrad optimizer.
layer_separable_conv_1d

Depthwise separable 1D convolution.
metric_auc

Approximates the AUC (Area under the curve) of the ROC or PR curves
metric_categorical_accuracy

Calculates how often predictions match one-hot labels
model_to_json

Model configuration as JSON
regularizer_orthogonal

A regularizer that encourages input vectors to be orthogonal to each other
reset_states

Reset the states for a layer
layer_upsampling_1d

Upsampling layer for 1D inputs.
loss_cosine_proximity

(Deprecated) loss_cosine_proximity
save_model_weights_hdf5

Save/Load model weights using HDF5 files
save_text_tokenizer

Save a text tokenizer to an external file
save_model_weights_tf

Save model weights in the SavedModel format
sequences_to_matrix

Convert a list of sequences into a matrix.
layer_flatten

Flattens an input
layer_cropping_3d

Cropping layer for 3D data (e.g. spatial or spatio-temporal).
learning_rate_schedule_piecewise_constant_decay

A LearningRateSchedule that uses a piecewise constant decay schedule
layer_gaussian_dropout

Apply multiplicative 1-centered Gaussian noise.
layer_cropping_2d

Cropping layer for 2D input (e.g. picture).
layer_global_average_pooling_3d

Global Average pooling operation for 3D data.
layer_upsampling_2d

Upsampling layer for 2D inputs.
layer_global_average_pooling_2d

Global average pooling operation for spatial data.
k_random_uniform

Returns a tensor with uniform distribution of values.
k_random_uniform_variable

Instantiates a variable with values drawn from a uniform distribution.
metric_mean_tensor

Computes the element-wise (weighted) mean of the given tensors
metric_true_positives

Calculates the number of true positives
metric_cosine_proximity

(Deprecated) metric_cosine_proximity
metric_mean_iou

Computes the mean Intersection-Over-Union metric
new_learning_rate_schedule_class

Create a new learning rate schedule type
normalize

Normalize a matrix or nd-array
model_from_saved_model

Load a Keras model from the Saved Model format
layer_max_pooling_2d

Max pooling operation for spatial data.
metric_sparse_top_k_categorical_accuracy

Computes how often integer targets are in the top K predictions
layer_max_pooling_3d

Max pooling operation for 3D data (spatial or spatio-temporal).
metric_accuracy

Calculates how often predictions equal labels
k_rnn

Iterates over the time dimension of a tensor
metric_mean_relative_error

Computes the mean relative error by normalizing with the given values
metric_categorical_crossentropy

Computes the crossentropy metric between the labels and predictions
metric_mean_squared_error

Computes the mean squared error between labels and predictions
predict.keras.engine.training.Model

Generate predictions from a Keras model
text_dataset_from_directory

Generate a tf.data.Dataset from text files in a directory
text_hashing_trick

Converts a text to a sequence of indexes in a fixed-size hashing space.
predict_generator

(Deprecated) Generates predictions for the input samples from a data generator.
metric_root_mean_squared_error

Computes root mean squared error metric between y_true and y_pred
save_model_tf

Save/Load models using SavedModel format
layer_normalization

A preprocessing layer which normalizes continuous features.
k_round

Element-wise rounding to the closest integer.
time_distributed

This layer wrapper allows to apply a layer to every temporal slice of an input
text_one_hot

One-hot encode a text into a list of word indexes in a vocabulary of size n.
timeseries_generator

Utility function for generating batches of temporal data.
timeseries_dataset_from_array

Creates a dataset of sliding windows over a timeseries provided as array
text_to_word_sequence

Convert text to a sequence of words (or tokens).
k_spatial_3d_padding

Pads 5D tensor with zeros along the depth, height, width dimensions.
layer_conv_1d_transpose

Transposed 1D convolution layer (sometimes called Deconvolution).
k_sqrt

Element-wise square root.
k_to_dense

Converts a sparse tensor into a dense tensor and returns it.
to_categorical

Converts a class vector (integers) to binary class matrix.
metric_sensitivity_at_specificity

Computes best sensitivity where specificity is >= specified value
model_to_saved_model

(Deprecated) Export to Saved Model format
model_to_yaml

Model configuration as YAML
%<-%

Assign values to names
layer_zero_padding_3d

Zero-padding layer for 3D data (spatial or spatio-temporal).
k_transpose

Transposes a tensor and returns it.
layer_average

Layer that averages a list of inputs.
k_update

Update the value of x to new_x.
k_update_add

Update the value of x by adding increment.
layer_average_pooling_1d

Average pooling for temporal data.
multi_gpu_model

(Deprecated) Replicates a model on different GPUs.
layer_cropping_1d

Cropping layer for 1D input (e.g. temporal sequence).
optimizer_nadam

Nesterov Adam optimizer
optimizer_rmsprop

RMSProp optimizer
learning_rate_schedule_polynomial_decay

A LearningRateSchedule that uses a polynomial decay schedule
layer_permute

Permute the dimensions of an input according to a given pattern
layer_zero_padding_2d

Zero-padding layer for 2D input (e.g. picture).
save_model_hdf5

Save/Load models using HDF5 files
train_on_batch

Single gradient update or model evaluation over one batch of samples.
serialize_model

Serialize a model to an R object
sequential_model_input_layer

sequential_model_input_layer
use_implementation

Select a Keras implementation and backend
metric_poisson

Computes the Poisson metric between y_true and y_pred
metric_specificity_at_sensitivity

Computes best specificity where sensitivity is >= specified value
metric_cosine_similarity

Computes the cosine similarity between the labels and predictions
metric_false_negatives

Calculates the number of false negatives
metric_precision

Computes the precision of the predictions with respect to the labels
layer_integer_lookup

A preprocessing layer which maps integer features to contiguous ranges.
layer_conv_1d

1D convolution layer (e.g. temporal convolution).
layer_conv_lstm_3d

3D Convolutional LSTM
layer_input

Input layer
layer_depthwise_conv_2d

Depthwise separable 2D convolution.
layer_spatial_dropout_2d

Spatial 2D version of Dropout.
text_tokenizer

Text tokenization utility
metric_mean_wrapper

Wraps a stateless metric function with the Mean metric
metric_mean_squared_logarithmic_error

Computes the mean squared logarithmic error
optimizer_adam

Adam optimizer
plot.keras_training_history

Plot training history
optimizer_adamax

Adamax optimizer
texts_to_matrix

Convert a list of texts to a matrix.
predict_on_batch

Returns predictions for a single batch of samples.
pop_layer

Remove the last layer in a model
predict_proba

(Deprecated) Generates probability or class probability predictions for the input samples.
layer_depthwise_conv_1d

Depthwise 1D convolution
layer_maximum

Layer that computes the maximum (element-wise) a list of inputs.
layer_minimum

Layer that computes the minimum (element-wise) a list of inputs.
layer_random_translation

Randomly translate each image during training
with_custom_object_scope

Provide a scope with mappings of names to custom objects
layer_spatial_dropout_1d

Spatial 1D version of Dropout.
layer_upsampling_3d

Upsampling layer for 3D inputs.
layer_zero_padding_1d

Zero-padding layer for 1D input (e.g. temporal sequence).
texts_to_sequences

Transform each text in texts in a sequence of integers.
layer_random_width

Randomly vary the width of a batch of images during training
summary.keras.engine.training.Model

Print a summary of a Keras model
%>%

Pipe operator
mark_active

Define new keras types
metric_precision_at_recall

Computes best precision where recall is >= specified value
reexports

Objects exported from other packages
plot.keras.engine.training.Model

Plot a Keras model
skipgrams

Generates skipgram word pairs.
regularizer_l1

L1 and L2 regularization
texts_to_sequences_generator

Transforms each text in texts in a sequence of integers.
zip_lists

zip lists
KerasConstraint

(Deprecated) Base R6 class for Keras constraints
KerasCallback

(Deprecated) Base R6 class for Keras callbacks
Layer

(Deprecated) Create a custom Layer