incrementPhi function

(Internal) Increment exposure record variable: phi

incrementPhi is an internal function for incrementing an exposure record variable. Specifically, the f_k is incremented by one if the following conditions are simultaneously met:

• For the final theta segment k, shadowtest assembly was feasible at least one times in any item position while interim theta segment was k.

incrementPhi(
  exposure_record,
  segments_to_apply,
  segment_prob,
  assembly_was_feasible
)

Arguments

• exposure_record: a named list containing exposure records.
• segments_to_apply: which segments to apply fading to.
• segment_prob: a vector containing segment-wise classification probabilities of an ability estimate.
• assembly_was_feasible: see assemblyInFinalThetaSegmentWasFeasibleAtLeastOnceInInterimThetaSegments.

Returns

incrementPhi returns an updated exposure record.