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CSAFE’s Latest Resources

Change cannot happen without community. CSAFE is passionate about achieving its mission to apply a statistically sound and scientifically solid foundation to the interpretation of forensic evidence. To that end, we invite fellow scientists and researchers, along with those in the forensic and legal communities, to use and share these resources as we work together to elevate forensic science and technology.

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Found 269 Results
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A Data-Driven Approach to Model the Generation Process of Bloodstain Patterns

Type: Research Area(s):

Published: 2022 | By: Tong Zou

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

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A Pipeline for Cartridge Case Comparisons

Type: Research Area(s):

Published: 2022 | By: Joseph Zemmels

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 requiring fewer parameters. The fitted Decision tree model is easily…

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

Type: Research Area(s):

Published: 2021 | By: Geoffrey Stewart Morrison

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 the OSAC standards-development process” https://doi.org/10.1016/j.fsisyn.2020.06.005.

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

Type: Research Area(s):

Published: 2022 | By: Chen Shi

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 of the investigation process. As Android app developers could leverage…

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Jury Perception of Bullet Matching Algorithms and Demonstrative Evidence

Type: Research Area(s):

Published: 2022 | By: Rachel Rogers

Presented at Joint Statistical Meetings

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Comparing handwriter and FLASH ID®, Two Handwriting Analysis Programs

Type: Research Area(s):

Published: 2022 | By: Stephanie Reinders

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, Handwriter is an open-source R package designed by CSAFE. We…

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

Type: Research Area(s):

Published: 2022 | By: Stephanie Reinders

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 to answer this question in previous research. We explore whether…

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Error Rate Methods for Forensic Handwriting Identification

Type: Research Area(s): ,

Published: 2022 | By: Danica Ommen

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

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Modeling Covarying Responses in Complex Tasks

Type: Research Area(s):

Published: 2022 | By: Amanda Luby

In testing situations, participants are often asked for supplementary re- sponses in addition to the primary response of interest, which may in- clude quantities like confidence or reported difficulty. These additional responses can be incorporated into a psychometric model either…

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Analyzing spatial responses: A comparison of IRT- based approaches, Conference Presentation

Type: Research Area(s):

Published: 2022 | By: Amanda Luby

We investigate two approaches for analyzing spatial coordinate responses using models inspired by Item Response Theory (IRT). In the first, we use a two-stage approach to first construct a pseudoresponse matrix using the spatial information and then apply standard IRT…

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