Class RankingMetrics (2.31.0)

RankingMetrics(mapping=None, *, ignore_unknown_fields=False, **kwargs)

Evaluation metrics used by weighted-ALS models specified by feedback_type=implicit.

Attributes

Name	Description
mean_average_precision	`google.protobuf.wrappers_pb2.DoubleValue` Calculates a precision per user for all the items by ranking them and then averages all the precisions across all the users.
mean_squared_error	`google.protobuf.wrappers_pb2.DoubleValue` Similar to the mean squared error computed in regression and explicit recommendation models except instead of computing the rating directly, the output from evaluate is computed against a preference which is 1 or 0 depending on if the rating exists or not.
normalized_discounted_cumulative_gain	`google.protobuf.wrappers_pb2.DoubleValue` A metric to determine the goodness of a ranking calculated from the predicted confidence by comparing it to an ideal rank measured by the original ratings.
average_rank	`google.protobuf.wrappers_pb2.DoubleValue` Determines the goodness of a ranking by computing the percentile rank from the predicted confidence and dividing it by the original rank.

builtins.object > proto.message.Message > RankingMetrics

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