summary.cosmic_fit

print.cosmic_fit

Methods for inspecting fitted objects of class <code>"cosmic_fit"</code>.
<code><a href="/link/print()?package=cosmic&version=0.5" data-mini-rdoc="cosmic::print()">print()</a></code> shows a compact posterior summary for the main model parameters,
while <code><a href="/link/summary()?package=cosmic&version=0.5" data-mini-rdoc="cosmic::summary()">summary()</a></code> returns the full summary matrix from the underlying
CmdStan fit object.

Implements the Conditional Ordinal Stereotype Model for Incident-Level Comparison (COSMIC), a method for analyzing ordinal outcomes observed across multiple actors within shared events. The model uses a conditional likelihood to remove event-level confounding and estimate actor-specific propensities relative to their peers. Efficient computation is achieved via a dynamic programming algorithm for the Poisson-multinomial normalization term, enabling scalable estimation with Markov chain Monte Carlo. The package provides tools for data preparation, model fitting using Stan, and extraction of posterior summaries for comparative inference. Estimation of police officer propensity to escalate force is the primary motivation for the model. For more details see Ridgeway (2026) "A Conditional Ordinal Stereotype Model to Estimate Police Officers’ Propensity to Escalate Force" <doi:10.1080/01621459.2025.2597050>.

Ridgeway Greg

cosmic

Conditional Ordinal Stereotype Model for Incident-Level
Comparison

Greg Ridgeway

summary.cosmic_fit function

<dl><dt>x</dt>
<dd>A fitted object of class <code>"cosmic_fit"</code>.</dd>
<dt>...</dt>
<dd>Additional arguments passed to the underlying method.</dd>
<dt>object</dt>
<dd>A fitted object of class <code>"cosmic_fit"</code>.</dd></dl>

Arguments

Methods for inspecting fitted objects of class <code>"cosmic_fit"</code>.
<code><a href='https://rdrr.io/r/base/print.html'>print()</a></code> shows a compact posterior summary for the main model parameters,
while <code><a href='https://rdrr.io/r/base/summary.html'>summary()</a></code> returns the full summary matrix from the underlying
CmdStan fit object.

Print and summarize a COSMIC fit — summary.cosmic_fit

<dl>

<dt>x</dt>
<dd>A fitted object of class <code>"cosmic_fit"</code>.</dd>


<dt>...</dt>
<dd>Additional arguments passed to the underlying method.</dd>


<dt>object</dt>
<dd>A fitted object of class <code>"cosmic_fit"</code>.</dd>

</dl>

summary.cosmic_fit: Print and summarize a COSMIC fit

Description

Usage

Value

Arguments