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Big Data, Selection Bias, and the Statistical Patterns of Mortality in Conflict

Megan Price and Patrick Ball (2014). SAIS Review of International Affairs © 2014 The Johns Hopkins University Press. This article first appeared in SAIS Review, Volume 34, Issue 1, Winter-Spring 2014, pages 9-20. All rights reserved.


HRDAG’s Year in Review: 2022

This past year at HRDAG has been about continuing efforts to uncover the truth.

Welcoming Our 2019-2020 Visiting Data Science Student

Bing Wang has joined HRDAG as a Visiting Data Science Student until the summer of 2020.

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


Our Thoughts on #metoo

Violence against women in all its forms is a human rights violation. Most of our HRDAG colleagues are women, and for us, unfortunately, recent campaigns such as #metoo are unsurprising.

Reflections: Minding the Gap

How might we learn what we don’t know? HRDAG associate Christine Grillo hits the wayback machine and recalls her first exposure to People Against Bad Things, ideas about bias and correlation versus causation, and truth.

Reflections: The People Who Make the Data

HRDAG associate Miguel Cruz has an epiphany. All those data he’s drowning in? Each datapoint is a personal tragedy, a story both dark and urgent, and he’s privileged to have access.

Syria’s celebrations muted by evidence of torture in Assad’s notorious prisons

The Human Rights Data Analysis Group, an independent scientific human rights organization based in San Francisco, has counted at least 17,723 people killed in Syrian custody from 2011 to 2015 — around 300 every week — almost certainly a vast undercount, it says.


How Data Processing Uncovers Misconduct in Use of Force in Puerto Rico

In Puerto Rico, some people are more likely to be victims of police violence than others. HRDAG processed a flood of data to illuminate the racial bias.

Meet the data analyst putting the perpetrators of genocide in prison

Biotechniques published an interview with Patrick Ball, inspired by his John Maddox Prize award.


At Toronto’s Tamil Fest, human rights group seeks data on Sri Lanka’s civil war casualties

Earlier this year, the Canadian Tamil Congress connected with HRDAG to bring its campaign to Toronto’s annual Tamil Fest, one of the largest gatherings of Canada’s Sri Lankan diaspora.

Ravichandradeva, along with a few other volunteers, spent the weekend speaking with festival-goers in Scarborough about the project and encouraging them to come forward with information about deceased or missing loved ones and friends.

“The idea is to collect thorough, scientifically rigorous numbers on the total casualties in the war and present them as a non-partisan, independent organization,” said Michelle Dukich, a data consultant with HRDAG.


New Research on Civilian Deaths and Disappearances in El Salvador

This rigorous estimate shows that 1-2 percent of the country’s population was killed or disappeared during the civil war.

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.

Killings of Social Movement Leaders in Colombia

Using multiple system estimation, we estimate the total population of social movement leaders killed in Colombia during 2018.

Talks & Discussions

2021 Rafto Prize Videos .ugb-1c7c838 .ugb-video-popup__wrapper{height:460px !important;background-color:#000000;background-image:url(https://hrdag.org/wp-content/uploads/2022/12/Screen-Shot-2022-12-09-at-3.41.30-PM.png)}.ugb-1c7c838 .ugb-video-popup__wrapper:before{background-color:#000000;opacity:0.3}.ugb-1c7c838 .ugb-video-popup__wrapper:hover:before{opacity:0.6}.ugb-1c7c838 .ugb-block-title{color:#ffffff}.ugb-1c7c838 .ugb-block-description{color:#ffffff}@media screen and (max-width:768px){.ugb-1c7c838 .ugb-video-popup__wrapper{height:208px !important}}The Rafto Prize 2021 | Rafto Foundation Rafto Foundation | HRDAG team | 2021 | 4 ...

Analizando los patrones de violencia en Colombia con más de 100 bases de datos

El objetivo de esta institución temporal es conocer la verdad de lo ocurrido en el  marco del conflicto armado.

How Data Analysis Reconsiders Deaths During Arrest

The US Bureau of Justice collects information on deaths during arrest, and HRDAG determined the efforts were incomplete. The conclusion: Approximately one third of all Americans killed by strangers are killed by police.

In Solidarity

We stand with our partners and every organizer fighting for justice.

Newsletters

2025 21 October, 2025 - HRDAG takes a stand against tyranny 9 October, 2025 - Unlocking unstructured data and getting it right 30 September, 2025 - Structural Zero 04: Pulling Back the Curtain on LLMs and Policing Data 23 September, 2025 - California’s Racial Justice Act and Police Records Access Project 24 August, 2025 - Structural Zero 03: Without Encryption, My Work Wouldn’t Be Possible 17 July, 2025 - Structural Zero 02: Scatter and keep working 3 June, 2025 - Structural Zero 01: Dictatorships create a lot of data  24 June, 2025 - Breaking through the noise with evidence 19 May, 2025 - Structural Zero 00: Introd...

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.

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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