MultiChannelIntegrand¶

class MultiChannelIntegrand : public madspace::FunctionGenerator ¶

Evaluates several Integrand channels on one merged batch.

Partitions the batch by the per-channel counts, runs each Integrand on its slice and concatenates the results, the same pattern as MultiChannelMapping.

Arguments

the union of the channel integrands’ arguments, plus the per-channel batch sizes.

Returns

the concatenated per-event quantities, plus the per-channel sizes when return_sizes is set.

References

[1] T. Heimel, O. Mattelaer, R. Winterhalder, “MadSpace”, https://arxiv.org/abs/2602.06895 (Sec. 2.1.1)

Public Functions

MultiChannelIntegrand(const std::vector<std::shared_ptr<Integrand>> &integrands, bool return_sizes = false)¶

Parameters:

integrands – The per-channel integrands.
return_sizes – If true, also return the per-channel batch sizes.