mlpack_optimization_ExponentialSchedule (3)

Public Member Functions

ExponentialSchedule (const double lambda=0.001)

double Lambda () const

Get the cooling speed, lambda. double & Lambda ()

Modify the cooling speed, lambda. double NextTemperature (const double currentTemperature, const double)

Returns the next temperature given current status.

Private Attributes

double lambda

The cooling speed.

The exponential cooling schedule cools the temperature T at every step according to the equation.

\[ T_{n+1} = (1-\lambda) T_{n} \]

where $ 0<\lambda<1 $ is the cooling speed. The smaller $ \lambda $ is, the slower the cooling speed, and better the final result will be. Some literature uses $ \alpha = (-1 \lambda) $ instead. In practice, $ \alpha $ is very close to 1 and will be awkward to input (e.g. alpha = 0.999999 vs lambda = 1e-6).

Definition at line 42 of file exponential_schedule.hpp.

mlpack::optimization::ExponentialSchedule::ExponentialSchedule (const doublelambda = \fC0.001\fP)\fC [inline]\fP

Definition at line 50 of file exponential_schedule.hpp.

double mlpack::optimization::ExponentialSchedule::Lambda () const\fC [inline]\fP

Get the cooling speed, lambda.

Definition at line 67 of file exponential_schedule.hpp.

References lambda.

double& mlpack::optimization::ExponentialSchedule::Lambda ()\fC [inline]\fP

Modify the cooling speed, lambda.

Definition at line 69 of file exponential_schedule.hpp.

References lambda.

double mlpack::optimization::ExponentialSchedule::NextTemperature (const doublecurrentTemperature, const double)\fC [inline]\fP

Returns the next temperature given current status. The current system's energy is not used in this calculation.

Parameters:

currentTemperature Current temperature of system.

currentEnergy Current energy of system (not used).

Definition at line 59 of file exponential_schedule.hpp.

References lambda.

double mlpack::optimization::ExponentialSchedule::lambda\fC [private]\fP

The cooling speed.

Definition at line 73 of file exponential_schedule.hpp.

Referenced by Lambda(), and NextTemperature().

Generated automatically by Doxygen for MLPACK from the source code.