Forensic Statistics

Towards a likelihood ratio approach for bloodstain pattern analysis

January 9, 2023 / Publication / Bloodstain, Forensic Statistics

In this work, we explore the application of likelihood ratio as a forensic evidence assessment tool to evaluate the causal mechanism of a bloodstain pattern. It is assumed that there

An Open-Source Implementation of the CMPS Algorithm for Assessing Similarity of Bullets

January 5, 2023 / Publication / Firearms and Toolmarks, Forensic Statistics

In this paper, we introduce the R package cmpsR, an open-source implementation of the Congruent Matching Profile Segments (CMPS) method developed at the National Institute of Standards and Technology (NIST)

Error Rate Methods for Forensic Handwriting Identification

November 30, 2022 / Presentation Slides / Forensic Statistics, Handwriting

Presentation is from the 106th International Association for Identification (IAI) Annual Educational Conference

Measuring Proficiency among Latent Print Examiners: A Statistical Approach from Standardized Testing

November 30, 2022 / Presentation Slides / Forensic Statistics, Latent Print

This presentation is from the 74th Annual Scientific Conference of the American Academy of Forensic Sciences

Ensemble of SLR systems for forensic evidence

November 29, 2022 / Poster / Forensic Statistics

Machine learning-based Score Likelihood Ratios have been proposed as an alternative to traditional Likelihood Ratio and Bayes Factor to quantify the value of forensic evidence. Scores allow formulating comparisons using

Likelihood Ratios for Categorical Evidence with Applications to Digital Forensics

November 29, 2022 / Poster / Digital, Forensic Statistics

In forensic investigations, the goal of evidence evaluation is often to address source-/identity-based questions in which the evidence consists of two sets of observations: one from an unknown source tied

Center for Statistics and Application in Forensic Evidence Update

November 29, 2022 / Publication / Footwear, Forensic Statistics, Handwriting

The information below highlights a sample of current research initiatives led by the CSAFE team. Additional accomplishments in other forensic science disciplines will be discussed in subsequent issues of Forensic

Reliability for Binary and Ordinal Data in Forensics

November 29, 2022 / Poster / Forensic Statistics

Forensics studies of feature-based comparison decisions typically focus on the accuracy and reliability the decisions. Decisions can be reports in the form of binary conclusions (value / no value) or

The ASCLD Forensic Research Committee and You: A Collaboration Worth Investigating

November 21, 2022 / Webinar / Forensic Statistics, Training and Education

This CSAFE webinar was held on November 17, 2022. Presenter: Henry Maynard Committee Chair, ASCLD Forensic Research Committee Chief Scientist in the Office of the Chief Scientist, Defense Forensic Science

handwriter: a Demonstration and Update on CSAFE Handwriting Analysis

October 19, 2022 / Webinar / Forensic Statistics, Handwriting, Training and Education

This CSAFE webinar was held on October 18, 2022. Presenters: Alicia Carriquiry Director, CSAFE Distinguished Professor and President’s Chair, Department of Statistics – Iowa State University Stephanie Reinders Research Scientist,

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