Violence in Blue: The 2020 Update

HRDAG has refreshed a 2016 Granta article about homicides committed by police in the United States.

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In Solidarity

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

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How much faith can we place in coronavirus antibody tests?

Given a positive test result, what is the probability that an individual has antibodies? This HRDAG-authored Granta article explains the science.

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Learning to Learn: Reflections on My Time at HRDAG

So much of what I learned at HRDAG was intangible, and I'm grateful to have been able to go deep.

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How to Become a Data Scientist: My Lessons at HRDAG

I will use the skills and culture I learned from HRDAG’s team to understand how the conflict has affected the people in my country.

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Welcoming Our New Foundation Relations and Strategy Lead

On March 16, Kristen Yawitz joined the HRDAG team in the role of Foundation Relations and Strategy Lead.

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How Many People Will Get Covid-19?

HRDAG has authored two articles in Significance that add depth to discussions around infection rates.

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A Model to Estimate SARS-CoV-2-Positive Americans

We’ve built a model for estimating the true number of positives, using what we have determined to be the most reliable datasets—deaths.

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Epidemiology has theories. We should study them.

Studying Covid
With so many dashboards and shiny visualizations, how can an interested non-technical reader find good science among the noise?

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Welcoming Our New Statistician

Maria Gargiulo has joined HRDAG as a Statistician.

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Uncertainty in COVID Fatality Rates

In this Granta article, HRDAG explains that neither the infectiousness nor the deadliness of the disease is set in stone.

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Overbooking’s Impact on Pre-Trial Risk Assessment Tools

How do police officer booking decisions affect tools relied upon by judges?

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Identifiers of Detained Children Have Implications for Data Security and Estimation

Identifiers being sequential could make possible estimations of the population of detained children.

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HRDAG’s Year End Review: 2019

Enjoy this look at our highlights from the past year, made possible by our generous funders.

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HRDAG at FAT* 2020: Pre-Trial Risk Assessment Tools

How do police officer booking decisions affect pre-trial risk assessment tools relied upon by judges?

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Welcoming Our 2019-2020 Visiting Data Science Student

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

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Learning a Modular, Auditable and Reproducible Workflow

The modular nature of the workflow and use of Git allowed us to work on different parts of the project from across the country.

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.Rproj Considered Harmful

We aim to produce code that is clear, replicatable across machines and operating systems, and that leaves an easy-to-follow audit trail.

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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.

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Reflections on Data Science for Real-World Problems

"Data science can lay out evidence to engage the state about systemic issues and assure people that they are not alone."

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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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