Predictive Model Assessment for Count Data
Abstract
We discuss tools for the evaluation of probabilistic forecasts and the critique of statistical models for ordered discrete data. Our proposals include a non-randomized version of the probability integral transform, marginal calibration diagrams and proper scoring rules, such as the predictive deviance. In case studies, we critique count regression models for patent data, and assess the predictive performance of Bayesian age-period-cohort models for larynx cancer counts in Germany. Key words: Calibration; Forecast veri cation; Model diagnostics; Predictive deviance; Probability integral transform; Proper scoring rule; Ranked probability score.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 05, 2007
- Accession Number
- ADA478635
Entities
People
- Claudia Czado
- Leonhard Held
- Tilmann Gneiting
Organizations
- University of Washington