This new report by the United Nations Office of High Commissioner of Human Rights builds on three prior analyses and new statistical analysis by HRDAG on killings in Syria.
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Covid-19 Research and Resources
HRDAG is identifying and interpreting the best science we can find to shed light on the global crisis brought on by the novel coronavirus, about which we still know so little. Right now, most of the data on the virus SARS-CoV-2 and Covid-19, the condition caused by the virus, are incomplete and unrepresentative, which means that there is a great deal of uncertainty. But making sense of imperfect datasets is what we do. HRDAG is contributing to a better understanding with explainers, essays, and original research, and we are highlighting trustworthy resources for those who want to dig deeper.
Papers and articles by HRDAG
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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.
HRDAG’s Year in Review: 2020
In 2020, HRDAG provided clarity on issues related to the pandemic, police misconduct, and more.
Estimating the Number of SARS-CoV-2 Infections and the Impact of Mitigation Policies
This Harvard Data Science Review article uses the least unreliable source of pandemic data: reported deaths.
String matching for governorate information in unstructured text
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Lies, Damned Lies and Official Statistics
This essay in the Health and Human Rights Journal addresses attempts to undermine Covid-19 data collection.
HRDAG Welcomes New Staff, Interns and Fellow
HRDAG is delighted to announce five additions to our team: one new staff member, three summer interns, and one fellow.
Lessons at HRDAG: Holding Public Institutions Accountable
Principled Data Processing is a way to prove to someone, usually yourself, that what you did was right.
Quantifying Police Misconduct in Louisiana
HRDAG contributes to the project by helping to classify, filter, extract, and standardize the records so that they can be useful in the database.
Newsletters
2026
5 August 2026 - Structural Zero 13: Building the Technology Freedom Cooperative
5 July 2026 - Structural Zero 12: Naming Police Officers Who Kill in California
24 June, 2026 - How can we know who died in Sri Lanka?
2 June, 2026 - Structural Zero 11: The Names that Don’t Match
3 May, 2026 - Structural Zero 10: All Is Not Lost with Incomplete Datasets
2 April, 2026 - Structural Zero 09: Who Is Missing From the Data?
19 March 2026 - HRDAG’s police accountability event
11 February 2026 - Structural Zero 08: Yes, Your Dataset is Probably Biased
2025
18 December, 2025 - Community and collaboration
10 December, ...
How Review of Police Data Verified Neglect of Missing Black Women
Sloppy recordkeeping by Chicago police has compromised missing persons cases. HRDAG is working with Pulitzer Prize-winning Invisible Institute to shed light on these stories.
Evaluating gunshot detection technology
Bailey’s analysis stemmed from data we had access to as part of our ongoing collaboration with the Invisible Institute.
How Pretrial Risk Assessment Tools Perpetuate Unfairness
Tools like Compas allegedly help judges predict future criminal activities and eliminate bias. HRDAG and partners showed how the tools recycle bias.
Podcast: Dr. Patrick Ball on Using Statistics to Uncover Truth
Dr. Patrick Ball recently visited the Plutopia News Network podcast for a wide-ranging, inspiring conversation about his work for the Human Rights Data Analysis Group.
Patrick spoke about how he first discovered human rights work during his time in El Salvador with the Peace Brigades International. That led to his ongoing work as a statistician and computer programmer working to assess and analyze human rights violations. He also unpacked some common statistical techniques used by researchers at Human Rights Data Analysis Group, such as multiple systems estimation, which uses multiple different datasets to gain insights into the data we don't ...
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 ...
HRDAG Takes a Stand Against Tyranny in the United States
by Patrick Ball and Megan Price
Today the Human Rights Data Analysis Group (HRDAG) publicly denounces the growing attacks on science and human rights in the United States. We reaffirm our commitment to using rigorous scientific research and data analysis to uphold accountability for perpetrators of violence—particularly when those perpetrators are in power.
For decades, HRDAG has sought accountability for those who have committed war crimes and genocide around the world. We have researched patterns of genocide, torture, disappearances, and other forms of state-sponsored violence in countries such as Guatemala, South Africa, and Haiti. We ...
Watch now: “In the Face of Tyranny,” a Webinar with HRDAG
The Human Rights Data Analysis Group recently hosted a conversation about the significant threats facing human rights researchers and scientific NGOs in the United States. We are posting the first part of this conversation on YouTube so that others may watch:
In addition to this community conversation, HRDAG put out a statement outlining our specific concerns about the targeting of the human rights and research community. Read the statement and our blog post.
As HRDAG Executive Director Dr. Megan Price explained, this is not a departure for HRDAG. As a scientific organization grounded in evidence, HRDAG remains fundamentally nonpartisan. ...