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Trove to IPFS

IPFS is a peer-to-peer storage network that promotes the resiliency, immutability, and auditability of data. This README explains code written to shepherd the files from janky external USB drives to IPFS.

Lies, Damned Lies and Official Statistics

This essay in the Health and Human Rights Journal addresses attempts to undermine Covid-19 data collection.

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Without Encryption, My Work Wouldn’t Be Possible

Structural Zero Issue 03 August 24, 2025 Part Three of Our Three-Part “Gathering the Data” Series. Read part one and part two. In computer security, “security” is always relative to something. What are we actually defending against, and how are we doing it? This is our “threat model.” My colleagues and I have been using scientific tools to analyze evidence of human rights abuses, including using statistics to uncover mass graves in Mexico and analyzing under-reported police homicides in the United States. Our work isn’t always popular. It can infuriate those in power who want to cover up incriminating truths about the ...

Film: Solving for X

Solving for X documents Patrick's team as they travel to Guatemala, Kosovo, and Liberia, helping human rights supporters apply sophisticated computer analysis to human rights events.

Lessons at HRDAG: Making More Syrian Records Usable

If we could glean key missing information from those fields, we would be able to use more records.

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<iframe src="https://www.youtube.com/embed/MfThopD7L1Y?list=PL8mc5VYrQH_Nx9jSWF2rYEgQhHyVobk6s" width="560" height="315" frameborder="0" allowfullscreen="allowfullscreen"></iframe>Kristian Lum, lead statistician at HRDAG | <em>Predictive Policing: Bias In, Bias Out</em> | 56 mins

Tech Note – improving LLM-driven info extraction

A follow-up chapter exploring recent advancements in LLM technology and extraction strategies.

How Causal Analysis Confirmed Impact of Cash Bail on Verdicts

Causal inference methods show that for indigent clients, money bail increases their likelihood of a guilty conviction.

Tech Note – using LLMs for structured info extraction

This post introduces the methodology of the Innocence Discovery Lab, a collaboration between IPNO and HRDAG.

How Data Scraping Provides Insights into Immigrant Arrests

In Washington State, some law enforcement officers illegally tip off ICE and CBP for civil immigration arrests. HRDAG helped identify where the problematic practices occurred.

Welcoming Our New HRDAG Data Scientist

Bailey joined HRDAG as a data scientist in 2022.

HRDAG Adds Three New Board Members

HRDAG's advisory board has added three new members.

Estimating Undocumented Homicides with Two Lists and List Dependence

Kristian Lum and Patrick Ball. 2015. Human Rights Data Analysis Group (April 2). © 2015 HRDAG.Creative Commons BY-NC-SA.


On the Quantification of Horror: Field Notes on Statistical Analysis of Human Rights Violations.

Patrick Ball. “On the Quantification of Horror: Field Notes on Statistical Analysis of Human Rights Violations.” in Repression and Mobilization, ed. by Christian Davenport, Hank Johnston, and Carol Mueller. Minneapolis: U Minnesota P. 2005.


Learning the Hard Way at the ICTY: Statistical Evidence of Human Rights Violations in an Adversarial Information Environment.

Amelia Hoover Green. In Collective Violence and International Criminal Justice: An Interdisciplinary Approach, ed. Alette Smeulers, Antwerp, Belgium. © 2010 Intersentia. All rights reserved. [Link coming soon]


Descriptive Statistics From Statements to the Liberian Truth and Reconciliation Commission

Kristen Cibelli, Amelia Hoover, and Jule Krüger (2009). “Descriptive Statistics From Statements to the Liberian Truth and Reconciliation Commission,” a Report by the Human Rights Data Analysis Group at Benetech and Annex to the Final Report of the Truth and Reconciliation Commission of Liberia. Palo Alto, California. Benetech.


Technical work at the non-governmental Human Rights Commission of El Salvador (CDHES-ng)


A Statistical Analysis of the Guatemalan National Police Archive: Searching for Documentation of Human Rights Abuses.

Megan E. Price, Tamy Guberek, Daniel R. Guzmán, Paul Zador, Gary M. Shapiro (2009). “A Statistical Analysis of the Guatemalan National Police Archive: Searchingfor Documentation of Human Rights Abuses.”In JSM Proceedings, Survey Research Methods Section. Alexandria, VA: American Statistical Association.


Studying Millions of Rescued Documents: Sampling Plan at the Guatemalan National Police Archive (GNPA).

Daniel R. Guzmán, Tamy Guberek, Gary M. Shapiro, Paul Zador (2009). “Studying Millions of Rescued Documents: Sampling Plan at the Guatemalan National Police Archive (GNPA).” In JSM Proceedings, Survey Research Methods Section. Alexandria, VA: American Statistical Association.


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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