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Should I update apollo_beta and apollo_probabilities manually for Prediction

Ask questions about post-estimation functions (e.g. prediction, conditionals, etc) or other processing of results.
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Ziyu
Posts: 1
Joined: 17 May 2024, 18:37

Should I update apollo_beta and apollo_probabilities manually for Prediction

Post by Ziyu »

Hi,

I'm new to Apollo and MDCEV.
I have trained an MDCEV model and tried to predict the choice.

I want to load the previous output, the "model" to do the prediction, like the following codes in the example

database = dataset1 # new dataset for prediction
apollo_inputs = apollo_validateInputs()
forecast_base = apollo_prediction(model,
apollo_probabilities,
apollo_inputs)

I noticed that although the estimated parameters are recorded in the model, the apollo_probabilities and the apollo_beta include initial settings for estimation, for example,
1. apollo_probabilities=function(apollo_beta, apollo_inputs, functionality="estimate"). Should I change the functionality to "prediction"?
2. a lot of settings in apollo_probabilities, such as #Define continuous consumption, are set for estimation, should I remove them?
3. the parameters in apollo_beta are the initial parameters before estimation, should I update it manually based on the results in the model?

Thank you so much for your time in advance!
stephanehess
Site Admin
Posts: 1350
Joined: 24 Apr 2020, 16:29

Re: Should I update apollo_beta and apollo_probabilities manually for Prediction

Post by stephanehess »

Hi

you don't need to do any of those things. In prediction, you should use apollo_prediction, not call apollo_probabilities yourself. Have a look at the manual too where this is explained in detail

Stephane
--------------------------------
Stephane Hess
www.stephanehess.me.uk
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