Class MultiRationalLoss¶

Defined in File loss.h

Inheritance Relationships¶

Base Type¶

public marian::RationalLoss (Class RationalLoss)

Derived Types¶

public marian::MeanMultiRationalLoss (Class MeanMultiRationalLoss)
public marian::ScaledMultiRationalLoss (Class ScaledMultiRationalLoss)
public marian::SumMultiRationalLoss (Class SumMultiRationalLoss)

Class Documentation¶

class MultiRationalLoss : public marian::RationalLoss ¶

Base class for multi-objective losses Base class for multi-objective losses which is a list of RationalLoss but also defines how to accumulate that list into a single RationalLoss.

Subclassed by marian::MeanMultiRationalLoss, marian::ScaledMultiRationalLoss, marian::SumMultiRationalLoss

Public Functions

MultiRationalLoss()¶

MultiRationalLoss(const RationalLoss &rl)¶

virtual void push_back(const RationalLoss &current)¶

const RationalLoss &operator[](size_t i)¶

auto begin()¶

auto end()¶

size_t size() const¶

Protected Functions

virtual Expr accumulateLoss(const RationalLoss &current) = 0¶: Accumulation rule for losses In the default case this would just be a sum, see SumMultiRationalLoss, but there are special cases like ScaledMultiRationalLoss (scale other loses according to first label count) or MeanMultiRationalLoss (sum of means) where the accumulation is more complex.

virtual Expr accumulateCount(const RationalLoss &current) = 0¶: Accumulation rule for labels Similar as above, the naive case is summation, but for instance MeanMultiRationalLoss is including all label counts in the loss hence label counts are always just 1 which is passed through without summation or other modifications.

Protected Attributes

std::vector<RationalLoss> partialLosses_¶