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The files linked on this page contain the data used in the calculations presented in Benetech's report to the Liberian Truth and Reconciliation Commission entitled "Descriptive Statistics From Statements to the Liberian Truth and Reconciliation Commission." In accordance with Benetech's Memorandum of Understanding with the TRC, these data are published on the Internet so that others can use the material to replicate our findings and continue research on past human rights violations in Liberia. In order to protect the privacy of the people who suffered, the information in the files below contains no personal identifying information about the victims or ...
El objetivo de esta institución temporal es conocer la verdad de lo ocurrido en el marco del conflicto armado.
The Journal of Open Source Software
The data compiled by the joint JEP-CEV-HRDAG project are publicly available from the Departamento Administrativo Nacional de Estadística (DANE). The data published by DANE is available in a format that may not be familiar to researchers who have not previously worked with statistical imputation methods. Recognizing this, verdata was created to support researchers in responsibly and correctly using the data despite the potential unfamiliarity of its structure. Researchers can use verdata to verify that the data files they are using in their analyses have not been altered, to replicate the main findings of the technical appendix, and to design new analyses of the conflict in Colombia.
Creative Commons Attribution 4.0 International License.
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.
This week, we join our friends and colleagues in feeling horrified by the violence in Charlottesville, Virginia. As we have for the past 26 years, we stand with the victims of violence and support human rights and dignity for all. We spend our careers observing and documenting mass political violence across the world. The demands by the so-called “alt-right” to normalize racism and social exclusion are all too familiar to us.
At HRDAG, our work is always guided by the Universal Declaration of Human Rights (UDHR). We reaffirm our commitment to these principles, in particular that the “recognition of the inherent dignity and of the equal and ...
HRDAG + Dejusticia
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.
Creative Commons International license 4.0.
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.
Patrick Ball, César Rodríguez and Valentina Rozo (2018). Asesinatos de líderes sociales en Colombia en 2016–2017: una estimación del universo. Dejusticia and Human Rights Data Analysis Group. August 2018. © 2018 HRDAG. Creative Commons.
Patrick Ball, César Rodríguez and Valentina Rozo (2018). Asesinatos de líderes sociales en Colombia en 2016–2017: una estimación del universo. Dejusticia and Human Rights Data Analysis Group. August 2018. © 2018 HRDAG. Creative Commons.
Those most vulnerable to state violence are already marginalized and undercounted, their experiences ignored or minimized in official sources. To avoid perpetuating these harms in our analyses, we have to find ways to incorporate unofficial data sources and all of the ways we remember.
[français]
Hissène Habré was president of the former French colony of Chad from 1982 to 1990. Credible allegations of systematic torture and crimes against humanity have been made against Habré’s state security force, the Documentation and Security Directorate (DDS), which pursued political opponents and operated notorious prisons during his regime.
One prison where the DDS is alleged to have tortured prisoners is the “Piscine,” a former swimming pool covered by a concrete roof. Prisoners were held in ten dank cells where witnesses say they were starved and abused.
After being forced from power in 1990, Habré went into exile ...
HRDAG researchers and analysts at Peru's Truth and Reconciliation Commission (TRC) estimated conflict mortality due to violence using Capture-Recapture methods.
From 2010 to 2012, a series of reports by HRDAG researchers applied new statistical methodologies to investigate deaths and missing people in Colombia. A 2010 report released by HRDAG scientists Tamy Guberek, Daniel Guzmán, Megan Price, Kristian Lum, and Patrick Ball documented patterns of violence in the Colombian state of Casanare. HRDAG researchers used MSE to analyze killings and disappearances recorded in 15 datasets provided by judicial, government, security, forensic and civil society organizations. Matching cases that appeared in more than one dataset, HRDAG statisticians modeled the process by which violations were recorded and estimated the ...
In 2009, as Indians debated institutional reform of their security forces in the wake of the previous year's Mumbai attacks, HRDAG issued a groundbreaking report about the human cost of suspending the rule of law during a violent counterinsurgency campaign in the Indian state of Punjab. Together with our partner Ensaaf, HRDAG released findings that cast substantial doubt on the Indian government's past explanations and justifications for disappearances and extrajudicial killings during the height of the Punjab counterinsurgency in the early 1990s. These findings contribute to an increasing body of knowledge that informs policy questions about the ...
Version date: 2000.01.29
Current version: ATV20.1
Patrick Ball & Herbert F. Spirer
v_ind
-------------+-----------
Victim |
Ethnic |
category |
| Freq.
-------------+-----------
1 Indigenous | 2,722
2 Ladino | 1,014
3 Unknown | 13,687
|
Total | 17,423
-------------+-----------
v_sex
----------+-----------
Victim |
Sex | Freq.
----------+-----------
4 F | 2,001
5 M | 11,445
6 d | 3,977
|
Total | 17,423
----------+-----------
v_eth
-------------+-----------
Victim |
Maternal |
language ...
Structural Zero Issue 04
September 30, 2025
Artificial intelligence is transforming how we work with information. At HRDAG, that changes how I do my job every day. My most recent project was using LLMs to explore and parse vast quantities of data about police abuses in California.
In this newsletter, I’ll pull back the curtain on that work. I’ll describe how a diverse coalition gathered more than a million pages of documents about police misconduct in California and how LLMs helped us make sense of them in ways that wouldn’t have been possible before the advent of this technology.
In addition to understanding my work, I hope that this ...
The Colombian Truth Commission (CEV), the Special Jurisdiction for Peace (JEP), and the Human Rights Data Analysis Group (HRDAG) have worked together to integrate data and calculate statistical estimates of the number of victims of the armed conflict, including homicides, forced disappearances, kidnapping, and the recruitment of child soldiers. Data are available through National Administrative Department of Statistics (DANE), the Truth Commission, and GitHub. Published in 2023.
The Colombian Truth Commission (CEV), the Special Jurisdiction for Peace (JEP), and the Human Rights Data Analysis Group (HRDAG) have worked together to integrate data and calculate statistical estimates of the number of victims of the armed conflict, including homicides, forced disappearances, kidnapping, and the recruitment of child soldiers. Data are available through National Administrative Department of Statistics (DANE), the Truth Commission, and GitHub.
(This post is co-authored by Patrick Ball and Kristian Lum.)
In early March, the Bureau of Justice Statistics published a report that estimated that in the period 2003-2009 and 2011, there were approximately 7427 homicides committed by police in the US. We responded that the method the analysts used, capture-recapture with two databases, is vulnerable to underestimation if the databases exhibit positive dependence. We conduct a thorough sensitivity analysis on the original independence model as applied to the police homicides databases. We used information from several other countries where our partners created multiple databases of homicides. We ...
The HRDAG Tech Corner is where we collect the deeper and geekier content that we create for the website. Click the accordion blocks below to reveal each of the Tech Corner entries.
Sifting Massive Datasets with Machine Learning
Principled Data Processing
It took me a while to realize I had become part of the HRDAG incubator—at least that’s what it felt like to me—for young data analysts who wanted to use statistical knowledge to make a real impact on human rights debates.
A lot of scientists and AI developers think that involving affected communities in AI research is probably the right thing to do, ethically. But they hesitate because they fear the messy unpredictability of human participation. They worry that even if human participation is the moral choice, it could degrade the science.
