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Character. Setting instructing Apollo what processing to apply to the likelihood function. This is in general controlled by the functions that call apollo_probabilities , though the user can also call apollo_probabilities manually with a given functionality for testing/debugging. Possible values are:
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"components" : For further processing/debugging, produces likelihood for each model component (if multiple components are present), at the level of individual draws and observations.
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"conditionals" : For conditionals, produces likelihood of the full model, at the level of individual inter-individual draws.
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"estimate" : For model estimation, produces likelihood of the full model, at the level of individual decision-makers, after averaging across draws.
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"gradient" : For model estimation, produces analytical gradients of the likelihood, where possible.
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"output" : Prepares output for post-estimation reporting.
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"prediction" : For model prediction, produces probabilities for individual alternatives and individual model components (if multiple components are present) at the level of an observation, after averaging across draws.
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"preprocess" : Prepares likelihood functions for use in estimation.
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"raw" : For debugging, produces probabilities of all alternatives and individual model components at the level of an observation, at the level of individual draws.
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"report" : Prepares output summarising model and choiceset structure.
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"shares_LL" : Produces overall model likelihood with constants only.
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"validate" : Validates model specification, produces likelihood of the full model, at the level of individual decision-makers, after averaging across draws.
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"zero_LL" : Produces overall model likelihood with all parameters at zero.
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