Likelihood ratios for categorical count data with applications in digital forensics

Type: Publication Research Area(s): Digital, Forensic Statistics

Published: 2022 | By: Rachel Longjohn

We consider the forensic context in which the goal is to assess whether two sets of observed data came from …

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Uncertainty in probabilistic genotyping of low template DNA: A case study comparing STRMix™ and TrueAllele™

Type: Publication Research Area(s): DNA, Forensic Statistics

Published: 2023 | By: William Thompson

Two probabilistic genotyping (PG) programs, STRMix™ and TrueAllele™, were used to assess the strength of the same item of DNA …

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Twin Convolutional Neural Networks to Classify Writers Using Handwriting Data

Type: Poster Research Area(s): Forensic Statistics, Handwriting

Published: 2023 | By: Pilhyun (Andrew) Lim

Identifying the source of handwriting is an important application in the field of forensic science that addresses questioned document evidence …

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Quantifying Bayes Factors for Forensic Handwriting Evidence

Type: Poster Research Area(s): Forensic Statistics, Handwriting

Published: 2023 | By: Anyesha Ray

Questioned Document Examiners (QDEs) are tasked with analyzing handwriting evidence to make source (or writership) determinations. The Center for Statistics …

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Quantifying Writer Variance Through Rainbow Triangle Graph Decomposition of the Common Word “the”

Type: Poster Research Area(s): Forensic Statistics, Handwriting

Published: 2023 | By: Alexandria Arabio

Handwriting comparative analysis is based on the principle that no two individuals can produce the same writing and that an …

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A Likelihood Ratio Approach for Detecting Behavioral Changes in Device Usage Over Time

Type: Poster Research Area(s): Digital

Published: 2023 | By: Rachel Longjohn

This work focuses on the situation in which investigators have obtained as evidence logs of user-generated activities on a device, …

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Analyzing spatial responses: A comparison of IRT- based approaches

Type: Publication Research Area(s): Forensic Statistics, Latent Print

Published: 2023 | By: Amanda Luby

We investigate two approaches for analyzing spatial coordinate responses using models inspired by Item Response Theory (IRT). In the first, …

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Judging Firearms Evidence

Type: Publication Research Area(s): Firearms and Toolmarks, Implementation and Practice

Published: 2023 | By: Brandon L. Garrett

Firearms violence results in hundreds of thousands of criminal investigations each year. To try to identify a culprit, firearms examiners …

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