Calculate DFT probabilities
Calculate probabilities of a Decision Field Theory (DFT) with external thresholds.
apollo_dft(dft_settings, functionality)
dft_settings |
List of settings for the DFT model. It should contain the following elements.
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functionality |
Character. Can take different values depending on desired output.
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The returned object depends on the value of argument functionality
as follows.
"estimate"
: vector/matrix/array. Returns the probabilities for the chosen alternative for each observation.
"prediction"
: List of vectors/matrices/arrays. Returns a list with the probabilities for all alternatives, with an extra element for the chosen alternative probability.
"validate"
: Same as "estimate"
"zero_LL"
: vector/matrix/array. Returns the probability of the chosen alternative when all parameters are zero.
"conditionals"
: Same as "estimate"
"output"
: Same as "estimate"
but also writes summary of input data to internal Apollo log.
"raw"
: Same as "prediction"
Hancock, T.; Hess, S. and Choudhury, C. (2018) Decision field theory: Improvements to current methodology and comparisons with standard choice modelling techniques. Transportation Research 107B, 18 - 40. Hancock, T.; Hess, S. and Choudhury, C. (Submitted) An accumulation of preference: two alternative dynamic models for understanding transport choices. Roe, R.; Busemeyer, J. and Townsend, J. (2001) Multialternative decision field theory: A dynamic connectionist model of decision making. Psychological Review 108, 370
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