Represents an AveragePool pooling layer. This calculates an output tensor by pooling the mean values of the input tensor across its spatial dimensions according to the given pool and stride values.

AxisNormalization

Represents an AxisNormalization normalization layer. This computes the mean variance on the last dimension of the input tensor and normalizes it according to scale and bias tensors.

BatchNormalization

Represents an BatchNormalization normalization layer. This computes the mean variance on the second dimension of the input tensor and normalizes it according to scale and bias tensors.

Represents a Bernoulli random layer. This generates an output tensor with values 0 or 1 from a Bernoulli distribution. The input tensor contains the probabilities used for generating the output values.

Broadcast

Represents a base class for layers that apply an operation to input tensors using numpy-style broadcasting.

Cast

Represents an element-wise Cast layer: f(x) = (float)x or f(x) = (int)x depending on the value of toType.

CastLike

Represents an element-wise CastLike layer: f(x) = (float)x or f(x) = (int)x depending on the data type of the targetType tensor.

Ceil

Represents an element-wise Ceil math layer: f(x) = ceil(x).

Celu

Represents an element-wise Celu activation layer: f(x) = max(0, x) + min(0, alpha * (exp(x / alpha) - 1)).

Clip

Represents an element-wise Clip math layer: f(x, xmin, xmax) = min(max(x, xmin), xmax)

Comparison

Represents an element-wise comparison layer.

Compress

Represents a Compress logical layer that selects slices of an input tensor along a given axis according to a condition tensor. If you don't provide an axis, the layer flattens the input tensor.

Concat

Represents a Concat concatenation layer. The layer computes the output tensor by concatenating the input tensors along a given axis.

Constant

Represents a constant in a model.

ConstantOfShape

Represents a ConstantOfShape layer. This generates a tensor with the shape given by the input tensor and filled with a given value.

Conv

Represents a Conv convolution layer, which applies a convolution filter to an input tensor.

ConvTranspose

Represents a ConvTranspose transpose convolution layer, which applies a convolution filter to an input tensor.

Cos

Represents an element-wise Cos trigonometric layer: f(x) = cos(x).

Cosh

Represents an element-wise Cosh trigonometric layer: f(x) = cosh(x).

CumSum

Represents a CumSum math layer that performs the cumulative sum along a given axis.

CustomLayer

Represents the base class for custom model layers.

Dense

Represents a Dense math operation layer which performs a matrix multiplication operation: f(x, w, b) = X x W + B.

This supports numpy-style broadcasting of input tensors.

DepthToSpace

Represents a DepthToSpace layer. The layer computes the output tensor by permuting data from depth into blocks of spatial data.

Div

Represents an element-wise Div math operation layer: f(a, b) = a / b.

This supports numpy-style broadcasting of input tensors.

Einsum

Represents an Einsum math operation layer.

Elu

Represents an element-wise Elu activation layer: f(x) = x if x >= 0, otherwise f(x) = alpha * (e^x - 1).

Equal

Represents an element-wise Equal logical operation layer: f(a, b) = 1 if a == b, otherwise f(x) = 0.

This supports numpy-style broadcasting of input tensors.

Erf

Represents an element-wise Erf activation layer: f(x) = erf(x).

Exp

Represents an element-wise Exp math layer: f(x) = e^{x}.

Expand

Represents an Expand layer. The layer computes the output tensor by broadcasting the input tensor into a given shape.

Flatten

Represents a Flatten layer. The layer computes the output tensor by reshaping the input tensor into a 2D matrix according to the given axis.

Floor

Represents an element-wise Floor math layer: f(x) = floor(x).

FusedActivation

Represents a base class for layers with an optional fused activation at the end of the execution.

Gather

Represents a Gather layer. This takes values from the input tensor indexed by the indices tensor along a given axis and concatenates them.

GatherElements

Represents a GatherElements layer. This takes values from the input tensor indexed by the indices tensor along a given axis.

GatherND

Represents a GatherND layer. This takes slices of values from the batched input tensor indexed by the indices tensor.

Gelu

Represents an element-wise Gelu activation layer: f(x) = x / 2 * (1 + erf(x / sqrt(2))).

GlobalAveragePool

Represents a GlobalAveragePool pooling layer. This calculates an output tensor by pooling the mean values of the input tensor across all of its spatial dimensions. The spatial dimensions of the output are size 1.

GlobalMaxPool

Represents a GlobalMaxPool pooling layer. This calculates an output tensor by pooling the maximum values of the input tensor across all of its spatial dimensions. The spatial dimensions of the output are size 1.

GlobalPool

Greater

Represents an element-wise Greater logical operation layer: f(a, b) = 1 if a > b, otherwise f(x) = 0.

This supports numpy-style broadcasting of input tensors.

GreaterOrEqual

Represents an element-wise GreaterOrEqual logical operation layer: f(a, b) = 1 if a >= b, otherwise f(a,b) = 0.

This supports numpy-style broadcasting of input tensors.

Hardmax

Represents a Hardmax activation layer along an axis: f(x, axis) = 1 if x is the first maximum value along the specified axis, otherwise f(x) = 0.

HardSigmoid

Represents an element-wise HardSigmoid activation layer: f(x) = clamp(alpha * x + beta, 0, 1).

HardSwish

Represents an element-wise HardSwish activation layer: f(x) = x * max(0, min(1, alpha * x + beta)) = x * HardSigmoid(x, alpha, beta), where alpha = 1/6 and beta = 0.5.

Identity

Represents an Identity layer. The output tensor is a copy of the input tensor.

InstanceNormalization

Represents an InstanceNormalization normalization layer. This computes the mean variance on the spatial dims of the input tensor and normalizes them according to scale and bias tensors.

IsInf

Represents an element-wise IsInf logical layer: f(x) = 1 elementwise if x is +Inf and detectPositive, or x is -Inf and detectNegative is true. Otherwise f(x) = 0.

IsNaN

Represents an element-wise IsNaN logical layer: f(x) = 1 if x is NaN, otherwise f(x) = 0.

Layer

Represents the base class for all model layers.

LeakyRelu

Represents an element-wise LeakyRelu activation layer: f(x) = x if x >= 0, otherwise f(x) = alpha * x.

Less

Represents an element-wise Less logical operation layer: f(a, b) = 1 if a < b, otherwise f(x) = 0.

This supports numpy-style broadcasting of input tensors.

LessOrEqual

Represents an element-wise LessOrEqual logical operation layer: f(a, b) = 1 if a <= b, otherwise f(a,b) = 0.

This supports numpy-style broadcasting of input tensors.

LocalPool

Infer the output partial tensor from the input partial tensors.

If the layer has more than one output, output partial tensors are saved to 'ctx'.

Log

Represents an element-wise Log math layer: f(x) = log(x).

LogSoftmax

Represents a LogSoftmax activation layer along an axis: f(x, axis) = log(Softmax(x, axis)).

LRN

Represents an LRN local response normalization layer. This normalizes the input tensor over local input regions.

LSTM

Represents an LSTM recurrent layer. This generates an output tensor by computing a one-layer LSTM (long short-term memory) on an input tensor.

MatMul

Represents a MatMul math operation layer which performs a matrix multiplication operation: f(a, b) = a x b.

MatMul2D

Represents a MatMul2D math operation layer which performs a matrix multiplication operation with optional transposes: f(a, b) = a' x b'.

Max

Represents an element-wise Max math operation layer: f(x1, x2 ... xn) = max(x1, x2 ... xn).

This supports numpy-style broadcasting of input tensors.

MaxPool

Represents a MaxPool pooling layer. This calculates an output tensor by pooling the maximum values of the input tensor across its spatial dimensions according to the given pool and stride values.

Mean

Represents an element-wise Mean math operation layer: f(x1, x2 ... xn) = (x1 + x2 ... xn) / n.

This supports numpy-style broadcasting of input tensors.

Min

Represents an element-wise Min math operation layer: f(x1, x2 ... xn) = min(x1, x2 ... xn).

This supports numpy-style broadcasting of input tensors.

Mod

Represents an element-wise Max math operation layer: f(a, b) = a % b.

If fmod is false the sign of the remainder is the same as that of the divisor as in Python.

If fmod is true the sign of the remainder is the same as that of the dividend as in C#.

This supports numpy-style broadcasting of input tensors.

Mul

Represents an element-wise Mul math operation layer: f(a, b) = a * b.

This supports numpy-style broadcasting of input tensors.

Multinomial

Represents a Multinomial random layer. This generates an output tensor with values from a multinomial distribution according to the probabilities given by the input tensor.

Neg

Represents an element-wise Neg math layer: f(x) = -x.

NonMaxSuppression

Represents a NonMaxSuppression object detection layer. This calculates an output tensor of selected indices of boxes from input boxes and scores tensors, and bases the indices on the scores and amount of intersection with previously selected boxes.

NonZero

Represents a NonZero layer. This returns the indices of the elements of the input tensor that are not zero.

Not

Represents an element-wise Not logical layer: f(x) = ~x.

OneHot

Represents a OneHot layer. This generates a one-hot tensor with a given depth, indices and values.

Or

Represents an element-wise Or logical operation layer: f(a, b) = a | b.

This supports numpy-style broadcasting of input tensors.

Pad

Represents a Pad layer. The layer calculates the output tensor by adding padding to the input tensor according to the given padding values and mode.

Pow

Represents an element-wise Pow math operation layer: f(a, b) = pow(a, b).

This supports numpy-style broadcasting of input tensors.

PRelu

Represents an element-wise PRelu activation layer: f(x) = x if x >= 0, otherwise f(x) = slope * x.

The slope tensor must be unidirectional broadcastable to x.

RandomLayer

Represents the abstract base class for layers which generate random values in the output tensor.

RandomNormal

Represents a RandomNormal random layer. This generates an output tensor of a given shape with random values in a normal distribution with given mean and scale, and an optional seed value.

RandomNormalLike

Represents a RandomNormalLike random layer. This generates an output tensor with the same shape as the input tensor with random values in a normal distribution, with given mean and scale, and an optional seed value.

RandomUniform

Represents a RandomUniform random layer. This generates an output tensor of a given shape with random values in a uniform distribution between a given low and high, from an optional seed value.

RandomUniformLike

Represents a RandomUniformLike random layer. This generates an output tensor with the same shape as the input tensor random values in a uniform distribution between a given low and high, from an optional seed value.

Range

Represents a Range layer. This generates a 1D output tensor where the values form an arithmetic progression defined by the start, limit and delta scalar input tensors.

Reciprocal

Represents an element-wise Reciprocal math layer: f(x) = 1 / x.

Reduce

Represents the abstract base class for reduction layers.

ReduceL1

Represents a ReduceL1 reduction layer along the given axes: f(x1, x2 ... xn) = |x1| + |x2| + ... + |xn|.

ReduceL2

Represents a ReduceL2 reduction layer along the given axes: f(x1, x2 ... xn) = sqrt(x1² + x2² + ... + xn²).

ReduceLogSum

Represents a ReduceLogSum reduction layer along the given axes: f(x1, x2 ... xn) = log(x1 + x2 + ... + xn).

ReduceLogSumExp

Represents a ReduceLogSumExp reduction layer along the given axes: f(x1, x2 ... xn) = log(e^x1 + e^x2 + ... + e^xn).

ReduceMax

Represents a ReduceMax reduction layer along the given axes: f(x1, x2 ... xn) = max(x1, x2, ... , xn).

ReduceMean

Represents a ReduceMean reduction layer along the given axes: f(x1, x2 ... xn) = (x1 + x2 + ... + xn) / n.

ReduceMin

Represents a ReduceMin reduction layer along the given axes: f(x1, x2 ... xn) = min(x1, x2, ... , xn).

ReduceProd

Represents a ReduceProd reduction layer along the given axes: f(x1, x2 ... xn) = x1 * x2 * ... * xn.

ReduceSum

Represents a ReduceSum reduction layer along the given axes: f(x1, x2 ... xn) = x1 + x2 + ... + xn.

ReduceSumSquare

Represents a ReduceSumSquare reduction layer along the given axes: f(x1, x2 ... xn) = x1² + x2² + ... + xn².

Relu

Represents an element-wise Relu activation layer: f(x) = max(0, x).

Relu6

Represents an element-wise Relu6 activation layer: f(x) = clamp(x, 0, 6).

Reshape

Represents a Reshape layer. The layer calculates the output tensor by copying the data from the input tensor and using a given shape. The data from the input tensor is unchanged.

Only one of the elements of the shape can be -1. The layer infers the size of this dimension from the remaining dimensions and the length of the input tensor.

Resize

Represents a Resize layer. The layer calculates the output tensor by resampling the input tensor along the spatial dimensions to a given shape.

RoiAlign

Represents an RoiAlign region of interest alignment layer. This calculates an output tensor by pooling the input tensor across each region of interest given by the rois tensor.

Round

Represents an element-wise Round math layer: f(x) = round(x).

ScaleBias

Represents an element-wise ScaleBias normalization layer: f(x, s, b) = x * s + b.

ScatterElements

Represents a ScatterElements layer. This copies the input tensor and updates values at indexes specified by the indices tensor with values specified by the updates tensor along a given axis.

ScatterElements updates the values depending on the reduction mode used.

ScatterND

Represents a ScatterND layer. This copies the input tensor and updates values at indexes specified by the indices tensor with values specified by the updates tensor.

ScatterND updates the values depending on the reduction mode used.

Selu

Represents an element-wise Selu activation layer: f(x) = gamma * x if x >= 0, otherwise f(x) = (alpha * e^x - alpha).

Shape

Represents a Shape layer. This computes the shape of an input tensor as a 1D TensorInt.

Shrink

Represents an element-wise Shrink math layer: f(x) = x + bias if x < lambd. f(x) = x - bias if x > lambd. Otherwise f(x) = 0.

Sigmoid

Represents an element-wise Sigmoid activation layer: f(x) = 1/(1 + e^(-x)).

Sign

Represents an element-wise Sign math layer: f(x) = 1 if x > 0. f(x) = -1 if x < 0. Otherwise f(x) = 0.

Sin

Represents an element-wise Sin trigonometric layer: f(x) = sin(x).

Sinh

Represents an element-wise Sinh trigonometric layer: f(x) = sinh(x).

Size

Represents a Size layer. This computes the number of elements of an input tensor as a scalar TensorInt.

Slice

Represents a Slice layer. The layer calculates the output tensor by slicing the input tensor along given axes with given starts, ends and steps.

Softmax

Represents a Softmax activation layer along an axis: f(x, axis) = exp(X) / ReduceSum(exp(X), axis).

Softplus

Represents an element-wise Softplus activation layer: f(x) = ln(e^x + 1).

Softsign

Represents an element-wise Softsign activation layer: f(x) = x/(|x| + 1).

SpaceToDepth

Represents a SpaceToDepth layer. The layer computes the output tensor by permuting data from blocks of spatial data into depth.

Split

Represents a Split layer. The layer computes the output tensors by splitting the input tensor along a single given axis.

Sqrt

Represents an element-wise Sqrt math layer: f(x) = sqrt(x).

Square

Represents an element-wise Square math layer: f(x) = x * x.

Squeeze

Represents a Squeeze layer. The layer computes the output tensor by reshaping the input tensor by removing dimensions of size 1.

Sub

Represents an element-wise Sub math operation layer: f(a, b) = a - b.

This supports numpy-style broadcasting of input tensors.

Sum

Represents an element-wise Sum math operation layer: f(x1, x2 ... xn) = x1 + x2 ... xn.

This supports numpy-style broadcasting of input tensors.

Swish

Represents an element-wise Swish activation layer. f(x) = sigmoid(x) * x = x / (1 + e^{-x}).

Tan

Represents an element-wise Tan trigonometric layer: f(x) = tan(x).

Tanh

Represents an element-wise Tanh activation layer: f(x) = tanh(x).

ThresholdedRelu

Represents an element-wise ThresholdedRelu activation layer: f(x) = x if x > alpha, otherwise f(x) = 0.

Tile

Represents a Tile layer. The layer computes the output tensor by repeating the input layer a given number of times along each axis.

TopK

Represents a TopK layer. This calculates the top-K largest or smallest elements of an input tensor along a given axis.

This layer calculates both the values tensor of the top-K elements and the indices tensor of the top-K elements as outputs.

Transpose

Represents a Transpose layer. The layer computes the output tensor by permuting the axes and data of the input tensor according to the given permutations.

Trilu

Represents a Trilu layer. The layer computes the output tensor by retaining the upper or lower triangular values from an input matrix or matrix batch and setting the other values to zero.

Unsqueeze

Represents an Unsqueeze layer. The layer computes the output tensor by reshaping the input tensor by adding dimensions of size 1 at the given axes.

Where

Represents an element-wise Where logical operation layer: f(condition, a, b) = a if condition, otherwise f(condition, a, b) = b.

This supports numpy-style broadcasting of input tensors.

Xor

Represents an element-wise Xor logical operation layer: f(a, b) = a ^ b.

This supports numpy-style broadcasting of input tensors.

Namespace Unity.Sentis.Layers

Classes

Enums