Struct TripletMarginWithDistanceLossOptions

• Defined in File loss.h

Struct Documentation

struct TripletMarginWithDistanceLossOptions

Options for the TripletMarginWithDistanceLoss module.

Example:

TripletMarginWithDistanceLoss
model(TripletMarginWithDistanceLossOptions().margin(3).swap(false));

Public Types

typedef std::variant<enumtype::kNone, enumtype::kMean, enumtype::kSum> reduction_t

typedef std::function<Tensor(const Tensor&, const Tensor&)> distance_function_t

Public Functions

inline auto distance_function(const std::optional<distance_function_t> &new_distance_function) -> decltype(*this)

Specifies a nonnegative, real-valued function that quantifies the closeness of two tensors.

If not specified, F::pairwise_distance will be used. Default: nullopt

inline auto distance_function(std::optional<distance_function_t> &&new_distance_function) -> decltype(*this)

inline const std::optional<distance_function_t> &distance_function() const noexcept

inline std::optional<distance_function_t> &distance_function() noexcept

inline auto margin(const double &new_margin) -> decltype(*this)

Specifies a nonnegative margin representing the minimum difference between the positive and negative distances required for the loss to be 0.

Larger margins penalize cases where the negative examples are not distance enough from the anchors, relative to the positives. Default: 1

inline auto margin(double &&new_margin) -> decltype(*this)

inline const double &margin() const noexcept

inline double &margin() noexcept

inline auto swap(const bool &new_swap) -> decltype(*this)

Whether to use the distance swap described in the paper Learning shallow convolutional feature descriptors with triplet losses by V.

Balntas, E. Riba et al. If True, and if the positive example is closer to the negative example than the anchor is, swaps the positive example and the anchor in the loss computation. Default: False

inline auto swap(bool &&new_swap) -> decltype(*this)

inline const bool &swap() const noexcept

inline bool &swap() noexcept

inline auto reduction(const reduction_t &new_reduction) -> decltype(*this)

Specifies the reduction to apply to the output. Default: Mean.

inline auto reduction(reduction_t &&new_reduction) -> decltype(*this)

inline const reduction_t &reduction() const noexcept

inline reduction_t &reduction() noexcept