tfr.keras.losses.NDCGLambdaWeight

Keras serializable class for NDCG.

Inherits From: DCGLambdaWeight

tfr.keras.losses.NDCGLambdaWeight(
    topn: Optional[int] = None,
    gain_fn: Optional[tfr.keras.utils.GainFunction] = None,
    rank_discount_fn: Optional[tfr.keras.utils.GainFunction] = None,
    smooth_fraction: float = 0.0,
    **kwargs
)

topn (int) The topn for the DCG metric.
gain_fn (function) Transforms labels.
rank_discount_fn (function) The rank discount function.
normalized (bool) If True, normalize weight by the max DCG.
smooth_fraction (float) parameter to control the contribution from LambdaMART.

Methods

get_config

View source

get_config() -> Dict[str, Any]

individual_weights

View source

individual_weights(
    labels, ranks
)

See _LambdaWeight.

pair_weights

View source

pair_weights(
    labels, ranks
)

See _LambdaWeight.