adaptive.DataSaver
The DataSaver
class
- class adaptive.DataSaver(learner, arg_picker)[source]
Bases:
object
Save extra data associated with the values that need to be learned.
- Parameters
learner (
BaseLearner
instance) – The learner that needs to be wrapped.arg_picker (function) – Function that returns the argument that needs to be learned.
Example
Imagine we have a function that returns a dictionary of the form:
{'y': y, 'err_est': err_est}
.>>> from operator import itemgetter >>> _learner = Learner1D(f, bounds=(-1.0, 1.0)) >>> learner = DataSaver(_learner, arg_picker=itemgetter('y'))
- load(fname, compress=True)
Load the data of a learner from a pickle file.
- save(fname, compress=True)
Save the data of the learner into a pickle file.
- tell(x, y)
Tell the learner about a single value.
- Parameters
x (A value from the function domain) –
y (A value from the function image) –
- abstract tell_pending(x)
Tell the learner that ‘x’ has been requested such that it’s not suggested again.
The make_datasaver
function
- adaptive.make_datasaver(learner_type, arg_picker)[source]
Create a
DataSaver
of a learner_type that can be instantiated with the learner_type’s key-word arguments.- Parameters
learner_type (
BaseLearner
type) – The learner type that needs to be wrapped.arg_picker (function) – Function that returns the argument that needs to be learned.
Example
Imagine we have a function that returns a dictionary of the form:
{'y': y, 'err_est': err_est}
.>>> from operator import itemgetter >>> DataSaver = make_datasaver(Learner1D, arg_picker=itemgetter('y')) >>> learner = DataSaver(function=f, bounds=(-1.0, 1.0))
Or when using
adaptive.BalancingLearner.from_product
:>>> learner_type = make_datasaver(adaptive.Learner1D, ... arg_picker=itemgetter('y')) >>> learner = adaptive.BalancingLearner.from_product( ... jacobi, learner_type, dict(bounds=(0, 1)), combos)