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Implementation notes

The main call is:

hfpdf.pdf(pars, data)

which transforms a pair of data (the observed counts in the channels + the implied observations of the auxiliary measurements) and parameters (parameters of interest nuisance parameters) into a single float

  data (real and implied)                                                                     
- [ channel 1 | channel 2 | ... | channel n | aux meas 1 | aux meas 2 | ... | aux meas m]
   ----------
      +-> | channel 1 | is concatenation of [ c1_bin1 | c1_bin2 | ... | c1_binN]

  parameters (concatenation of all parameters of interest + nuisance parameters)
- [ par 1 | .... | par n ]

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|  Computational Graph
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v

[ ] single float pdf value