"""Active learning using ratio based confidence uncertainty measure."""
from pyrelational.batch_mode_samplers import TopKSampler
from pyrelational.informativeness import RatioConfidence
from pyrelational.strategies.classification.classification_strategy import (
ClassificationStrategy,
)
[docs]
class RatioConfidenceStrategy(ClassificationStrategy):
"""Implements Ratio Confidence Strategy.
Unlabelled samples are scored and queried based on the ratio confidence for classification scorer.
"""
def __init__(self, axis: int = -1):
"""Initialize the strategy with the ratio confidence scorer and a deterministic scorer for classification."""
super().__init__(RatioConfidence(axis=axis), TopKSampler())