# R Package

An R package, SHELF, is available on CRAN, and a developement version is on GitHub. The package includes both Shiny apps and command line implementation for all the methods described in the SHELF documentation.

# Shiny apps

These apps are available online, but are also all included in the SHELF R package. Online access to these apps is time-limited (they are hosted on RStudio’s shinyapps.io service). If you want to use the apps in an actual elicitation workshop, we strongly encourage you to use the offline versions in the SHELF package.

#### Single expert

Eliciting a distribution from a single expert

#### Multiple experts

Eliciting individual distributions from multiple experts

#### Bivariate elicitation

Eliciting a bivariate distribution using a Gaussian copula

#### Dirichlet elicitation

Eliciting a Dirichlet distribution for a set of proportions constrained to sum to 1.

#### Extension method - continuous

Eliciting a distribution for a continuous target variable $X$ via a distribution for a continuous extension variable $Y$ and a conditional distribution for $X|Y$.

#### Extension method - discrete

Eliciting a distribution for a continuous target variable $X$ via a distribution for a discrete extension variable $Y$ and a conditional distribution for $X|Y$. Can be used to elicit multimodal distributions.

# Other elicitation methods

We have been involved in developing other elicitation methods, outside of the SHELF project. There is a paper and supporting app/code for each method, but templates for conducting the elicitation are not available within SHELF

# MATCH elicitation tool

As part of the MATCH project, David Morris, Jeremy Oakley and John Crowe produced a web-based elictation tool which is based on an earlier version of the SHELF R code. A user guide was produced as part of the PCOD+ project, sponsored by the Office for Naval Research.

#### MATCH uncertainty elicitation tool

Eliciting a distribution from a single expert

#### MATCH user guide

MATCH user guide (pdf)