private static void CheckSchemaValid(IExceptionContext ectx, RoleMappedSchema schema,
IFeatureContributionMapper predictor)
{
Contracts.AssertValue(ectx);
ectx.AssertValue(schema);
ectx.AssertValue(predictor);
// REVIEW: Check that Features column is present and is of correct size and item type.
}
public BindableMapper(IHostEnvironment env, IFeatureContributionMapper predictor, int topContributionsCount, int bottomContributionsCount, bool normalize, bool stringify)
{
Contracts.CheckValue(env, nameof(env));
_env = env;
_env.CheckValue(predictor, nameof(predictor));
if (topContributionsCount < 0)
{
throw env.Except($"Number of top contribution must be non negative");
}
if (bottomContributionsCount < 0)
{
throw env.Except($"Number of bottom contribution must be non negative");
}
_topContributionsCount = topContributionsCount;
_bottomContributionsCount = bottomContributionsCount;
_normalize = normalize;
Stringify = stringify;
Predictor = predictor;
GenericMapper = ScoreUtils.GetSchemaBindableMapper(_env, Predictor, null);
}
internal FeatureContributionCalculator(IFeatureContributionMapper contributionMapper) => ContributionMapper = contributionMapper;