WindowExtrapolator¶

class WindowExtrapolator(extrapolator=None, window=2)[source]¶

Bases: qiskit.chemistry.algorithms.pes_samplers.extrapolator.Extrapolator

An extrapolator which wraps another extrapolator, limiting the internal extrapolator’s ground truth parameter set to a fixed window size.

Constructor.

Parameters

extrapolator (Union[PolynomialExtrapolator, DifferentialExtrapolator, None]) – ‘internal’ extrapolator that performs extrapolation on variational parameters based on data window
window (int) – Number of previous points to use for extrapolation. A value of zero indicates that all previous points will be used for bootstrapping.

Methods

`extrapolate`	Extrapolate at specified point of interest given a set of variational parameters.
`factory`	Factory method for constructing extrapolators.

Attributes

extrapolator¶

Returns the internal extrapolator.

window¶

Returns the size of the window.