Our Team

“In our lab, we conduct social network research to understand how and why marginalization happens. Our goal is to identify and disrupt the processes that prevent some people and ideas from being fully heard. We hope to empower marginalized communities to amplify their voice.”
Professor Brooke Foucault Welles, Lab Director

Lab Director

Brooke Foucault Welles

I am the Associate Dean for Research for the College of Arts, Media and Design, Professor of Communication Studies, and Director of the Network Science PhD program at Northeastern University. I am fascinated by how communication technology shapes, changes, and transforms our relationships with power. From small groups to whole societies, I use computational and mixed-methods to understand how everyday people can use communication technology to create a more just, equitable, and inclusive world. I love to collaborate in interdisciplinary teams and I have co-authored with colleagues from many different disciplines, including computer science, psychology, sociology, political science, digital humanities, design, and public health. I earned my  Ph.D. in Media, Technology and Society from Northwestern University, and M.S. and B.S. degrees in Communication from Cornell University.

In addition to research, I love advising and mentoring. I won my college and university’s Excellence in Teaching awards in 2017, I co-founded Women in Network Science (WiNS), and I am fortunate to work with a team of brilliant junior researchers in the CoMM Lab

Postdoctoral Researchers

Eugenia Perekhodko

Eugenia Perekhodko is a postdoctoral researcher in the CoMM lab. She recently received her PhD from the University of Rome focusing on Network Science with a thesis based on "Structural Network Analysis." Her primary research interests are in Complex networks, Network structure, Web mining, Social network analysis and Network modeling. Eugenia's first PhD project was dedicated to the analysis of the structure regarding the core of Web and Social networks, graph theory theoretical notions, and algorithms. She earned her BS and MS in Applied Mathematics and Computer Science from Moscow State University in 2014.

Graduate Research Assistants

Sagar Kumar

I am a Ph.D. Student at the Network Science Institute entering my second year. I received my Bachelor’s degree in Physics and Philosophy from Northeastern University in December 2020, where I took my first Network Science course in 2018. During this time, I focused my attention broadly on dynamical processes on complex social networks and social constructivism. Before my Ph.D I spent a time as a consultant in the insurance industry and spent a year at the Center for Social Media Responsibility at the University of Michigan’s School of Information as a full-time researcher studying computational sociolinguistics, moderation systems, and misinformation.

My work now is broadly on developing novel methods to measure, detect, and analytically represent communication processes in the world. Simple diffusion models that have been utilized for years neglect crucial information about the messages we send, the channels we send them through, and the rich knowledge gained from an analysis of the power structures underlying every communication process. Research in this area is ongoing and is very interdisciplinary, but updates can be found on my Google Scholar and website.

Outside of research, I’m a DJ and co-founder of FDEC Records as well as an avid-but-only-just-starting road cyclist. I’m so grateful to have an advisor that creates such an open, diverse, and fun space to research. Brooke has been my #1 advocate and mentor for the last 5 years and I couldn’t be any happier :)

Adina Gitomer

I am a fourth-year student in the Network Science Ph.D. program at Northeastern. I earned my undergraduate degree in computer science and critical social theory at Wesleyan University. With full appreciation for the harms wrought by the internet, my research focuses on the ways in which it gives voice, visibility, and access to marginalized groups, and in turn, helps shift dominant cultural attitudes and narratives. I mix network science tools with qualitative methods to explore how youth in particular leverage social media for political participation and social change. I’ve led a project about the way keyword-based data collection obscures young users’ participation in online political discourse, which received a top student paper award in the Political Communication Division at the 72nd Annual International Communication Association conference. I’ve also led work on how young people remix activist content on TikTok, and am currently analyzing how youth activists exploit online affordances to reconfigure power in movement building. Some things that I love outside of research include word games, puzzles, Set, and glitter.

Robin Lange

I am a fourth year PhD student working with Dr. Brooke Foucault Welles. My interests are online hate speech and leadership in teams.

I am currently leading a project on how community based interventions can be used to mitigate the harm of hate speech. I am utilizing a mixed methods approach using both qualitative interviewing and quantitative data analysis of online hate speech.

I am also working on a collaboration with igraph and Women in Network Science to study how leadership structures impact longevity and diversity.

Before coming to Northeastern I received a Bachelors in Psychology and a minor in Art from the University of Wisconsin-Madison. Most recently, I received an NULab Seedling grant and became a CITAP affiliate. In my spare time I enjoy sewing, rock climbing and playing board games.

Alyssa Smith

Alyssa is a third year PhD student working with Brooke Foucault Welles and David Lazer. Before coming to Northeastern, she worked as a data engineer & data scientist; before that, she studied Comparative Media Studies and Computer Science at MIT. She is interested in community-building in online spaces, the spread of attention online, and natural language processing. As of 2023, Alyssa is a National Science Foundation GRFP award recipient. 

Alyssa is currently studying attention brokers, third parties that contribute to the creation of a new following relationship through their amplification, as well as Twitter attention niches. She is also conducting a retrospective autoethnography of university bureaucracies and social media as a result of fallout from this research. In addition, she is studying Twitter data related to the#FreeBritney movement, and was published in 2021 for her paper "OpenFraming: Open-sourced Tool for Computational Framing Analysis of Multilingual Data." In her work with the Lazer Lab, Alyssa is building an open-source aggregate data tool to make some of the Twitter data the lab has more widely available. 

Her favorite part of working with this team is their emphasis on work/life balance and overall commitment to take care of one another's well-being. In her free time, she powerlifts, bakes, embroiders, and hangs out with her dog, Eliza. During long seminars, you might catch her knitting!

Yukun Yang

I am an incoming first-year Ph.D. student working with Dr. Brooke Foucault Welles. My general research interests lie in computational social science, computer-mediated communication, and online communities. More specifically, I am interested in how social identities undergird communication and interactions on social media: how individuals construct and express their identities and how people perceive and react to others' identity expression online. On a larger scale, I am also interested in how identity-based complex social processes, especially identities related to political ideology, nationality, and race/ethnicity, influence the phenomenon of balkanization, polarization, mobilization, and user migration in online spaces.

I earned my master's degree in Information Science at the University of North Carolina, Chapel Hill. Before joining the lab, I was a data scientist at the Center for Anti Racist Research at Boston University where I was the primary contributor to the Racial Data Tracker project. In my free time, I am an avid home cook/baker, concert-goer, and funny cat video binge-watcher.

Dana Bullister

I am a second year PhD student in Interdisciplinary Design and Media working with Dr. Brooke Foucault Welles and Dr. Nabeel Gillani. I am interested in combining data visualization, systems design, and communication technologies to explore tools supporting more transparent, intelligent, efficient, and equitable outcomes in policy. I have previously worked as a data scientist, cognitive science researcher, technology startup founder, analytics product manager, local government activist and political candidate, and data visualization designer in the civic technology space.

I received a bachelor's in computer science and cognitive science from Wellesley College and an MS in information design and data visualization from Northeastern University. I also have a graduate certificate in data, economics, and development policy from MITx.

Through theory and practice, I am excited to explore enriching our toolset for collective decision making, re-examining the balance of influence in policy, and impacting how information flows through systems and communities.

Erika Melder

I am a second-year Ph.D. student in Northeastern's Khoury College of Computer Science. Broadly, my interests focus on the ways in which marginalized people form diffuse or federated communities on social media, and how those communities respond to internal and external conflicts which threaten their integrity. I'm currently analyzing data related to Enbridge's Line 3 and the #StopLine3 movement to understand how activist groups' uses of media differ between platforms and cases.

Prior to arriving at Northeastern, I received a B.S. in computer science and mathematics at the University of Maryland, College Park. During my undergrad, I participated in an REU at Rutgers University where I devised new techniques for dual-sensor porosity detection in 3D laser metal deposition printing. I also worked at the American Mathematical Society's Washington, D.C. office, where I helped connect career mathematicians with U.S. Congresspeople to facilitate government-supported basic research. I then received an M.S. in theoretical computer science at the University of Maryland, College Park, during which I studied approximation techniques for the set cover problem and how they were improved using probabilistically-checkable proof techniques.

Undergraduate Research Assistants

Alex Madaras

I am a fourth year at Northeastern studying History, Culture, & Law with a concentration in Digital Humanities. My interests lie in investigating how social media networks create subversive social change, challenge misinformation, and facilitate resource exchange, particularly in the context of the ongoing COVID-19 pandemic. Outside of the lab, I enjoy thrifting, photography, and organizing for a better world.

Hana Chalmers

I am a rising fourth year at Northeastern studying Business and Communications with a concentration in marketing. After taking Dr. Welles Social Networks course, I became fascinated with the idea of how researchers can track the connections between social media users by analyzing their past movements. I am particularly interested in how we can use communication theory to understand the connections between certain social media users and why some users hold more power than others. I learned quite a bit about this working on Political Efficacy for Youth on Twitter project, and have continued to learn about youth activism on TikTok and its unique networks. I hope that by researching, we can discover which users are receiving more attention in social networks in order to ultimately help marginalized groups receive equal amounts of attention.

Outside of school, you will most likely find me in the kitchen testing out a new recipe as I love to bake or cook whenever I have the time. My favorite thing about the CoMM Lab has been how much I have learned by stepping out of my comfort zone; my knowledge of how to help marginalized communities on social media and attention networks has increased significantly.

Sasheen Joseph

I am a third year Psychology undergraduate with minors in Data Science, Computational Social Sciences and Sociology at Northeastern University. I’m interested in investigating how social media networks and algorithms influence human behavior.

In the CoMMLab, I am working as a Research Assistant and my favorite thing about working on this team is the supportive environment and the abundance of opportunities I have to connect with a group of people that are both creative and intelligent.

In my spare time, I enjoy reading, listening to music, watching movies, and running!

Claire Coffman

My name is Claire Coffman and I am a third year Media and Screen Studies student at Northeastern university with minors in Spanish and Computational Social Sciences. I’m primarily interested in the way media as a form of art and entertainment contributes to global, social understandings of connectedness. I am also interested in the ways that human attributes like leadership, language, and personality come across in online communities, and how that impacts interpersonal relationships. At CoMM Lab, I work as a research assistant on the igraph project, which explores diversity and accessibility in open source projects and communities. Outside of my work and studies, I sing in a choir, and I enjoy watching movies, baking, and spending time in nature. 

Sam Furey

I am a rising fourth-year undergraduate at Northeastern studying Psychology with a minor in Criminal Justice. I am interested very broadly in online communities, specifically in fandoms and fan communities, and in how dedicated fans interact with their interests. Along with this, I am also very interested in studying parasocial relationships and reactions to celebrity scandals. In the CoMM Lab, I also work as part of the igraph project, where we are studying sustainability and diversity in open source projects and communities. Outside of school and the lab, I can normally be found reading or listening to music!

Staff

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Alumni

Andrea Barrios
Former Undergraduate Research Assistant

Margaret Clark
Former Undergraduate Research Assistant

Larissa Doroshenko
Former Postdoctoral Research Associate

Kristen Flaherty
Former Lab Manager

Ryan J. Gallagher
Former Graduate Research Assistant
Currently Data Scientist at Alethea

Eric Gu
Former Undergraduate Research Assistant

Dominic Ridley
Former Undergraduate Research Assistant

Gyanendra Sharma
Former Postdoctoral Researcher
Currently at Toyota Research Institute

Shreya Singh
Former Graduate Research Assistant

Omkar Terse
Former Graduate Research Assistant
Currently Data Science Engineer at Entrata

Wayne Xu
Former Postdoctoral Researcher
Currently faculty at UMass Amherst