Recent Publications


Shots fired: Can technology really keep us safe from gunfire?

Significance

Abstract: An expensive American gunshot detection system claims it’s necessary because humans don’t always call the police to report gunfire. But opponents say it’s fatally flawed. To investigate, Bailey Passmore and Larry Barrett analysed data on emergencies within the city of Chicago. Read the article off-site.

Bailey Passmore and Larry Barrett. 2025. Shots fired: Can technology really keep us safe from gunfire? Significance, Volume 22, Issue 4, July 2025, Pages 34–37. 27 May 2025. © Royal Statistical Society 2025. https://doi.org/10.1093/jrssig/qmaf042

© Royal Statistical Society 2025

 

The killings of social movement leaders and human rights defenders in Colombia 2018 – 2023: an estimate of the universe.

HRDAG + Dejusticia

Abstract: In 2018, Dejusticia and HRDAG published our first report estimating the total number of social leaders killed in Colombia during 2016-2017. Additionally, we demonstrated that a statistical method known as “capture-recapture” could be used to estimate the underreporting of murdered social leaders. Moreover, our estimate closely matched the total documented by the organizations collectively. A year later, we released a second report, updating the data to include 2018. Five years later, we revisited this exercise to cover the period from 2019 to 2023, focusing on three of the original six organizations. Read the article on HRDAG (en español).

Valentina Rozo Ángel and Patrick Ball. 2024. Asesinatos de líderes sociales y defensores de derechos en Colombia: en estimación del universo actualización 2019 – 2023. Human Rights Data Analysis Group. 18 December 2024. © HRDAG 2024. 

Creative Commons International license 4.0.

The Use of Unstructured Data to Study Police Use of Force

CHANCE magazine

Abstract: The challenges and opportunities researchers face when working with unstructured data are hardly new. This article defines unstructured data as data that is not organized according to pre-existing schemas or structures for the sake of statistical analysis. Unstructured data poses a unique challenge for researchers focused on police and policing. The article discusses a definition of unstructured data and two of the primary challenges faced when working with such data, namely information extraction and classification problems. Two case studies are used to illuminate the challenges. Read the article off-site.

Tarak Shah, Cristian Allen, Ayyub Ibrahim, Harlan Kefalas, and Bavo Stevens (2024). “The Use of Unstructured Data to Study Police Use of Force.” 5 December, 2024. CHANCE37 (4), 18–23. https://doi.org/10.1080/09332480.2024.2434437

© The American Statistical Association (ASA) and Taylor & Francis Group 2024

Deaths in Custody during the Armed Conflict in Syria, 2011–2023

Maria Gargiulo, Tarak Shah, Megan Price (2024). Deaths in Custody during the Armed Conflict in Syria, 2011–2023. Human Rights Data Analysis Group. 10 December, 2024. © 2024 HRDAG. Creative Commons BY-NC-SA.

Unveiling Statistical Invisibility: The Structural Racism of the War on Drugs, its Impact on Social Inequalities, and the Need for Citizen Data Empowerment in Latin America

Cecilia Olliveira, Patrick Ball, Dayana Blanco, Eduardo Ribeiro, Juliana Borges, Maria Isabel Couto, Nathália Oliveira (2024).”Unveiling Statistical Invisibility: The Structural Racism of the War on Drugs, its Impact on Social Inequalities, and the Need for Citizen Data Empowerment in Latin America.” T20 Brasil. September 2024.

Innocence Discovery Lab – Harnessing Large Language Models to Surface Data Buried in Wrongful Conviction Case Documents

Ayyub Ibrahim, Huy Dao, and Tarak Shah (2024). “Innocence Discovery Lab – Harnessing Large Language Models to Surface Data Buried in Wrongful Conviction Case Documents.” The Wrongful Conviction Law Review 5 (1):103-25. https://doi.org/10.29173/wclawr112. 31 May, 2024. Copyright (c) 2024 Ayyub Ibrahim, Huy Dao, Tarak Shah. Creative Commons Attribution 4.0 International License.

Preserving Human Rights Data with the Filecoin Network: A Journey into the Decentralized Web with HRDAG

Patrick Ball (2024). Preserving Human Rights Data with the Filecoin Network: A Journey into the Decentralized Web with HRDAG. Filecoin Foundation for the Decentralized Web. 18 April, 2024.

verdata: An R package for analyzing data from the Truth Commission in Colombia

Maria Gargiulo, María Julia Durán, Paula Andrea Amado, and Patrick Ball (2024). verdata: An R package for analyzing data from the Truth Commission in Colombia. The Journal of Open Source Software. 6 January, 2024. 9(93), 5844, https://doi.org/10.21105/joss.05844. Creative Commons Attribution 4.0 International License.

An Archive of Our Publications

From time to time, we issue our own scientific reports that focus on the statistical aspects of the data analysis we have done in support of our partners. These reports are non-partisan, and they leave the work of advocacy to our partners.

You can search our publications by keyword or by year.

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Our work has been used by truth commissions, international criminal tribunals, and non-governmental human rights organizations. We have worked with partners on projects on five continents.

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