Drift

class capymoa.stream.drift.Drift

Bases: object

Represents a concept drift in a DriftStream. See 2.7.1 Concept drift framework in [1].

[1]

Bifet, Albert, et al. “Data stream mining: a practical approach.” COSI (2011).

__init__(position, width=0, alpha=0.0, random_seed=1)

Construct a drift in a DriftStream.

Parameters:

• position – The location of the drift in terms of the number of instances processed prior to it occurring.

• width – The size of the window of change. A width of 0 or 1 corresponds to an abrupt drift.

• alpha – The grade of change, defaults to 0.0.

• random_seed – Seed for random number generation, defaults to 1.