Portfolios Archive - Center for Statistics and Applications in Forensic Evidence

Advancing the Understanding of 3D Imaging for Firearms Identification

November 25, 2024 / Presentation Slides / Firearms and Toolmarks

Houston Forensic Science Center, in collaboration with CSAFE, has been awarded an NIJ grant to conduct a study focused on comparability of images acquired by 3D instruments manufactured by different

Computational Shoeprint Analysis for Forensic Science

November 25, 2024 / Dissertation / Footwear

Shoeprints are a common type of evidence found at crime scenes and are regularly used in forensic investigations. However, their utility is limited by the lack of reference footwear databases

Score-based Likelihood Ratios Using Stylometric Text Embeddings

November 25, 2024 / Poster / Forensic Statistics, Handwriting

We consider the problem setting in which we have two sets of texts in digital form and would like to quantify our beliefs that the two sets of texts were

How do Labs Ensure Quality? A Nationwide Review of SOPs for Latent Print Examination

November 18, 2024 / Presentation Slides / Implementation and Practice, Latent Print

This presentation is from the 108th International Association for Identification (IAI) Annual Educational Conference, Reno, Nevada, August 11-17, 2024. Posted with permission of CSAFE.

Statistics and its Applications in Forensic Science and the Criminal Justice System

November 18, 2024 / Presentation Slides / Forensic Statistics, Implementation and Practice

This presentation is from the 2024 Joint Statistical Meetings (JSM), Portland, Oregon, August 3-8, 2024.

Algorithmic matching of striated tool marks

November 18, 2024 / Presentation Slides / Firearms and Toolmarks, Forensic Statistics

Automatic matching algorithms for assessing the similarity between striation marks have been investigated for bullet lands and some tool marks, such as screwdrivers. We are interested in the investigation of

Silencing the Defense Expert

November 18, 2024 / Presentation Slides / Forensic Statistics, Implementation and Practice, Training and Education

In the wake of the 2009 NRC and 2016 PCAST Reports, the Firearms and Toolmark (FATM) discipline has come under increasing scrutiny. Validation studies like AMES I, Keisler, AMES II,

Developing a Repeatable and Reproducible Protocol for Establishing Combined Minutiae Frequencies

November 18, 2024 / Presentation Slides / Latent Print, Training and Education

Fingerprint minutia types influence LPEs’ analyses and evaluations during casework, with features perceived as rarer generally given more weight. Last year, we reported on examiner perceptions of minutia type frequency.

A reproducible pipeline for extracting representative signals from wire cuts

November 18, 2024 / Conference Proceeding / Firearms and Toolmarks, Forensic Statistics

We propose a reproducible pipeline for extracting representative signals from 2D topographic scans of the tips of cut wires. The process fully addresses many potential problems in the quality of

An algorithm for forensic toolmark comparisons

November 18, 2024 / Publication / Firearms and Toolmarks, Forensic Statistics

Forensic toolmark analysis traditionally relies on subjective human judgment, leading to inconsistencies and lack of transparency. The multitude of variables, including angles and directions of mark generation, further complicates comparisons.

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