physbo.opt.adam module

class physbo.opt.adam.adam(params, grad, options={})

Optimizer of f(x) with the adam method

params

current input, x

Type:numpy.ndarray

nparams

dimension

Type:int

grad

gradient function, g(x) = f'(x)

Type:function

m

Type:numpy.ndarray

v

Type:numpy.ndarray

epoch

the number of update already done

Type:int

max_epoch

the maximum number of update

Type:int

alpha

Type:float

beta

Type:float

gamma

Type:float

epsilon

Type:float

run(*args, **kwargs)

set_params(params)

update(params, *args, **kwargs)

calculates the updates of params

パラメータ:

• params (numpy.ndarray) -- input
• args -- will be passed to self.grad
• kwargs -- will be passed to self.grad

戻り値:

update of params

戻り値の型:

numpy.ndarray