Portfolios Archive - Center for Statistics and Applications in Forensic Evidence

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

Does image editing improve the quality of latent prints? An analysis of image-editing techniques in one crime laboratory

January 9, 2023 / Publication / Latent Print

Field research within latent print comparison has remained sparse in the context of an otherwise growing body of literature examining the discipline. Studies examining how ACE-V procedures are implemented within

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)

A Data-Driven Approach to Model the Generation Process of Bloodstain Patterns

November 30, 2022 / Poster / Bloodstain

This poster was presented at the 106th International Association for Identification

A Pipeline for Cartridge Case Comparisons

November 30, 2022 / Poster / Firearms and Toolmarks

We introduce novel sub-procedures in the pre-processing, comparison and similarity feature steps. The sub-procedures result in an improved error rate compared to our implementation of the CMC method while also

Reply to Response to Vacuous standards – Subversion of the OSAC standards-development process

November 30, 2022 / Publication / Implementation and Practice

This Letter to the Editor is a reply to Mohammed et al. (2021) https://doi.org/10.1016/j.fsisyn.2021.100145, which in turn is a response to Morrison et al. (2020) “Vacuous standards – subversion of

LibDroid: Summarizing information flow of Android Native Libraries via Static Analysis

November 30, 2022 / Publication / Digital

With advancements in technology, people are taking advantage of mobile devices to access e-mails, search the web, and video chat. Therefore, extracting evidence from mobile phones is an important component

Jury Perception of Bullet Matching Algorithms and Demonstrative Evidence

November 30, 2022 / Poster / Implementation and Practice

Presented at Joint Statistical Meetings

Comparing handwriter and FLASH ID®, Two Handwriting Analysis Programs

November 30, 2022 / Presentation Slides / Handwriting

FLASH ID and handwriter are computer programs that compare questioned handwritten documents against handwritten samples from known writers. FLASH ID was developed by Sciometrics and is used by the FBI,

Evaluating Reference Sets for Score-Based Likelihood Ratios for Camera Device Identification

November 30, 2022 / Presentation Slides / Digital

An investigator wants to know if an illicit image captured by an unknown camera was taken by a person of interest’s (POI’s) phone. Score-based likelihood ratios (SLRs) have been used

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