polarcbo.scheduler.beta_exponential

class polarcbo.scheduler.beta_exponential(opt, beta=1.0, beta_max=100000.0, r=1.0)

Bases: scheduler_base

Exponential scheduler class

This class implements an exponential scheduler for the \(\beta\)-parameter. The \(\beta\)-parameter is updated according to the rule

\[\beta_{k+1} = \beta_k \cdot r\]

where \(r\) is a parameter of the class.

Parameters:

• opt (object) – The optimizer for which the \(\beta\)-parameter should be updated

• beta (float, optional) – The initial value of the \(\beta\)-parameter. The default is 1.0.

• beta_max (float, optional) – The maximum value of the \(\beta\)-parameter. The default is 100000.0.

• r (float, optional) – The parameter \(r\) of the scheduler. The default is 1.0.

update()

Update the \(\beta\)-parameter in opt according to the exponential scheduler.