DSAI Cohorts

Why I Don’t Call Myself a Data Scientist: A Researcher's Journey

October 1, 2025
by Jose Aguilar. I reflect on my uneasy relationship with being called a data scientist. Despite training in computer science and utilizing computational tools in education policy, I struggle with how data science often strips away human narratives and reinforces existing inequities. My identity as a first-generation, queer, Latinx scholar deepens these tensions, prompting me to explore frameworks such as QuantCrit and critical data science. Ultimately, I utilize research that bridges computation and critique, advocating for more human-centered, politically aware approaches to data that integrate lived experiences alongside data findings.

Decision-Making Under Pressure during My PhD: Lessons from whale songs and ocean noise

May 6, 2025
by Jaewon Saw. This blog post shares a story from a field experiment using Distributed Acoustic Sensing (DAS) to detect whale vocalizations in Monterey Bay. Most of the data got overwhelmed by noise from boat engines, wave motion, and cable instability. On the final day, a spur-of-the-moment decision to add loops to the fiber optic cable dramatically improved signal quality.

Predicting the Future: Harnessing the Power of Probabilistic Judgements Through Forecasting Tournaments

April 29, 2025
by Christian Caballero. From the threat of nuclear war to rogue superintelligent AI to future pandemics and climate catastrophes, the world faces risks that are both urgent and deeply uncertain. These risks are where traditional data-driven models fall short—there’s often no historical precedent, no baseline data, and no clear way to simulate a future world. In cases like this, how can we anticipate the future? Forecasting tournaments offer one answer, harnessing the wisdom of crowds to generate probabilistic estimates of uncertain future events. By incentivizing accuracy through structured competition and deliberation, these tournaments have produced aggregate predictions of future events that outperform well-calibrated statistical models and teams of experts. As they continue to develop and expand into more domains, they also raise urgent questions about bias, access, and whose knowledge gets to shape our collective sensemaking of the future.

Navigating AI Tools in Open Source Contributions: A Guide to Authentic Development

December 17, 2024
by Sahiba Chopra. The rise of ChatGPT has transformed how developers approach their work - but it might be hurting your reputation in the open-source community. While AI can supercharge your productivity, knowing when not to use it is just as crucial as knowing how to use it effectively. This guide reveals the unspoken rules of AI usage in open source, helping you navigate the fine line between leveraging AI and maintaining authenticity. Learn when to embrace AI tools and when to rely on your own expertise, plus get practical tips for building trust in the open-source community.

Teaching Data Science as a Tool for Empowerment

February 18, 2025
by Elijah Mercer. Data literacy is a powerful tool for empowerment, especially for historically marginalized communities. Through Data Cafecito at Roadmap to Peace and helping teach Data 4AC at UC Berkeley, Elijah Mercer helps bridge the gap between data, advocacy, and justice. Data Cafecito fosters culturally responsive data practices for Latinx-serving organizations, while Data 4AC challenges students to critically analyze data’s role in systemic inequities. Drawing from his experience in education, Mercer uses interactive teaching methods to make data accessible and meaningful. By centering storytelling and community-driven insights, he aims to equip individuals with the skills to use data for social change.

Which Coin Should I Flip? The Multi-Arm Bandit

February 4, 2025
by Bruno Smaniotto. Consider the following game: You are given the option to choose between two coins to flip. These coins are possibly biased, so the probability of getting Heads for each coin might differ from 50/50. Each time that you flip Heads, you win one dollar. There are a total of 10 rounds. Which coin should you flip at each round? In this blog post, we will analyze this problem through the lens of a famous decision-making algorithm called the Multi-Arm Bandit, exploring how to structure the problem mathematically and how it can be solved for particular examples.