namespace Microsoft.ML.Probabilistic.Distributions.Automata
{
    public class WeightFunctions<TSequence, TElement, TElementDistribution, TSequenceManipulator, TAutomaton>
        where TSequence, class, IEnumerable<TElement>
        where TElementDistribution, new(), CanComputeProduct<TElementDistribution>, CanCreatePartialUniform<TElementDistribution>, CanGetLogAverageOf<TElementDistribution>, IImmutableDistribution<TElement, TElementDistribution>, SummableExactly<TElementDistribution>
        where TSequenceManipulator, new(), ISequenceManipulator<TSequence, TElement>
        where TAutomaton, new(), Automaton<TSequence, TElement, TElementDistribution, TSequenceManipulator, TAutomaton>
    {
        [Quality(QualityBand.Experimental)]
        public interface IWeightFunction<TThis> : IWeightFunction, IEquatable<TThis>
            where TThis, new(), IWeightFunction<TThis>
        {
            TThis SumLog(double logWeight1, TThis weightFunction, double logWeight2);
        }
    }
}