Class Sigmoid#
Defined in File activations.hpp
Class Documentation#
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class Sigmoid#
Sigmoid activation function.
A class that implements the Sigmoid activation function.
\(\sigma(x) = \frac{1}{1 + e^{-x}}\)
\(\sigma'(x) = x(1 - x)\)
Public Functions
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Sigmoid() = default#
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template<typename T>
inline auto forward(const T &src) const# Applies the Sigmoid activation function to the input array and returns the result.
- Template Parameters
ShapeType – The type of the shape of the input array.
StorageType – The type of the storage of the input array.
- Parameters
src – The input array to apply the activation function to.
- Returns
A new array with the result of applying the Sigmoid activation function to the input array.
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template<typename ShapeType, typename StorageScalar>
inline void forward(array::ArrayContainer<ShapeType, Storage<StorageScalar>> &dst, const array::ArrayContainer<ShapeType, Storage<StorageScalar>> &src) const# Applies the Sigmoid activation function to the input array and stores the result in the output array.
- Template Parameters
ShapeType – The type of the shape of the input and output arrays.
StorageScalar – The type of the scalar values stored in the input and output arrays.
- Parameters
dst – The output array to store the result of applying the Sigmoid activation function to the input array.
src – The input array to apply the activation function to.
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template<typename ShapeType, typename StorageScalar>
inline void backward(array::ArrayContainer<ShapeType, Storage<StorageScalar>> &dst, const array::ArrayContainer<ShapeType, Storage<StorageScalar>> &src) const#
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template<typename ShapeType, typename StorageScalar, size_t... Dims>
inline void forward(array::ArrayContainer<ShapeType, FixedStorage<StorageScalar, Dims...>> &dst, const array::ArrayContainer<ShapeType, FixedStorage<StorageScalar, Dims...>> &src) const#
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template<typename ShapeType, typename StorageScalar, size_t... Dims>
inline void backward(array::ArrayContainer<ShapeType, FixedStorage<StorageScalar, Dims...>> &dst, const array::ArrayContainer<ShapeType, FixedStorage<StorageScalar, Dims...>> &src) const#
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template<typename ShapeType, typename StorageScalar, typename descriptor, typename Functor, typename ...Args>
inline void forward(array::ArrayContainer<ShapeType, Storage<StorageScalar>> &dst, const detail::Function<descriptor, Functor, Args...> &src) const#
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template<typename ShapeType, typename StorageScalar, typename descriptor, typename Functor, typename ...Args>
inline void backward(array::ArrayContainer<ShapeType, Storage<StorageScalar>> &dst, const detail::Function<descriptor, Functor, Args...> &src) const#
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template<typename ShapeType, typename StorageScalar, typename Src, typename std::enable_if_t<std::is_same_v<typename typetraits::TypeInfo<Src>::Backend, backend::CUDA>, int> = 0>
inline void forward(array::ArrayContainer<ShapeType, CudaStorage<StorageScalar>> &dst, const Src &src) const#
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template<typename ShapeType, typename StorageScalar, typename Src, typename std::enable_if_t<std::is_same_v<typename typetraits::TypeInfo<Src>::Backend, backend::CUDA>, int> = 0>
inline void backward(array::ArrayContainer<ShapeType, CudaStorage<StorageScalar>> &dst, const Src &src) const#
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Sigmoid() = default#