apollo_checkArguments

Checks that the user-defined functions used by Apollo are correctly defined by the user.

Choice models are a widely used technique across numerous scientific disciplines. The Apollo package is a very flexible tool for the estimation and application
of choice models in R. Users are able to write their own
model functions or use a mix of already available ones. Random heterogeneity,
both continuous and discrete and at the level of individuals and
choices, can be incorporated for all models. There is support for both standalone
models and hybrid model structures. Both classical
and Bayesian estimation is available, and multiple discrete
continuous models are covered in addition to discrete choice.
Multi-threading processing is supported for estimation and a large
number of pre and post-estimation routines, including for computing posterior
(individual-level) distributions are available.
For examples, a manual, and a support forum, visit
<http://www.ApolloChoiceModelling.com>. For more information on choice
models see Train, K. (2009) <isbn:978-0-521-74738-7> and Hess,
S. & Daly, A.J. (2014) <isbn:978-1-781-00314-5> for an overview
of the field.

Stephane Hess

apollo

Tools for Choice Model Estimation and Application

David Palma

Thomas Hancock

apollo_checkArguments function

<dl><dt>apollo_probabilities</dt>
<dd>Function. Likelihood function as defined by the user.</dd>
<dt>apollo_randCoeff</dt>
<dd>Function. Used with mixing models. Constructs the random parameters of a mixing model. Receives two arguments:<ul>
<li><code>apollo_beta</code>: Named numeric vector. Names and values of model parameters.</li>
<li><code>apollo_inputs</code>: The output of this function (<code>apollo_validateInputs</code>).</li>
</ul></dd>
<dt>apollo_lcPars</dt>
<dd>Function. Used with latent class models. Constructs a list of parameters for each latent class. Receives two arguments:<ul>
<li><code>apollo_beta</code>: Named numeric vector. Names and values of model parameters.</li>
<li><code>apollo_inputs</code>: The output of this function (<code>apollo_validateInputs</code>).</li>
</ul></dd></dl>

Arguments

Checks definitions of Apollo functions — apollo_checkArguments

<dl>

<dt>apollo_probabilities</dt>
<dd>Function. Likelihood function as defined by the user.</dd>


<dt>apollo_randCoeff</dt>
<dd>Function. Used with mixing models. Constructs the random parameters of a mixing model. Receives two arguments:<ul>
<li><code>apollo_beta</code>: Named numeric vector. Names and values of model parameters.</li>
<li><code>apollo_inputs</code>: The output of this function (<code>apollo_validateInputs</code>).</li>
</ul></dd>


<dt>apollo_lcPars</dt>
<dd>Function. Used with latent class models. Constructs a list of parameters for each latent class. Receives two arguments:<ul>
<li><code>apollo_beta</code>: Named numeric vector. Names and values of model parameters.</li>
<li><code>apollo_inputs</code>: The output of this function (<code>apollo_validateInputs</code>).</li>
</ul></dd>

</dl>

apollo_checkArguments: Checks definitions of Apollo functions

Description

Usage

Value

Arguments

Details