Research
My work has largely focused on measuring the extent to which sociotechnical systems are helping users to achieve their goals. The answer is never just technical — it requires deep understanding of users and their goals, and then operationalizing these into concrete metrics and statistical models. These themes trace that question across different domains, methods, and stages of my career.
Measurement as Design
Sociotechnical systems routinely optimize for metrics that are easy to measure but miss what actually matters. My work addresses this at two levels: ensuring we're measuring the right constructs — belonging rather than engagement, interaction quality rather than volume — and then operationalizing these constructs into trustworthy models and metrics that can be used at scale across organizations.
- Ranking by Engagement and Non-Engagement Signals: Learnings from Industry (Annals of the New York Academy of Sciences 2025)
- Parting Crowds: Characterizing Divergent Interpretations in Crowdsourced Annotation Tasks (CSCW 2016)
- A Knowledge Tracing Model of Learning from a Social Tagging System (UMUAI 2013)
- How Conversational Structure and Style Shape Online Community Experiences (ICWSM 2026)
- A Social-Ecological Approach to Modeling Sense of Virtual Community (SOVC) in Livestreaming Communities (CSCW 2022)
- The Life and Death of Online Groups: Predicting Group Growth and Longevity (WSDM 2012)
- Snap Decisions? How Users, Content, and Aesthetics Interact to Shape Photo Sharing Behaviors (CHI 2016)
Online Communities
How do we know if an online community is effectively achieving its goals? My work examines how communities form, the motivations which drive their formation, how relationships develop within them, and a broader sense of community attachment evolves over time.
- How Founder Motivations, Goals, and Actions Influence Early Trajectories of Online Communities (CHI 2024)
- Welcome to the Neighborhood: Assessing Localized Social Media Use and Pro-Community Attitudes in a Multi-National Survey (Social Media + Society 2025)
- A Social-Ecological Approach to Modeling Sense of Virtual Community (SOVC) in Livestreaming Communities (CSCW 2022)
- From Virtual Strangers to IRL Friends: Relationship Development in Livestreaming Communities on Twitch (CSCW 2020)
- The Life and Death of Online Groups: Predicting Group Growth and Longevity (WSDM 2012)
- Talking in Circles: Selective Sharing in Google+ (CHI 2012)
Moderation & Governance
Healthy communities require governance; in most community platforms these are led by volunteer moderators with varied backgrounds, skills, and goals. My research finds that effective moderation is less like policing and more like professional practice. Understanding moderators at a deeper level allows us to build more effective tools for them, translating into healthier, more effective communities.
- Post Guidance for Online Communities (CSCW 2025)
- Who Moderates on Twitch and What Do They Do? Quantifying Practices in Community Moderation on Twitch (GROUP 2023)
- Practicing Moderation: Community Moderation as Reflective Practice (CSCW 2022)
- How Conversational Structure and Style Shape Online Community Experiences (ICWSM 2026)
Social Information Sharing
How do social signals shape the way that people find and make sense of information? My research has explored information overload in social streams, how social contexts shape search strategies, and how we can design tools to help individuals manage the flood of socially-mediated information.
- Towards Supporting Search over Trending Events with Social Media (ICWSM 2013)
- A Knowledge Tracing Model of Learning from a Social Tagging System (UMUAI 2013)
- Talking in Circles: Selective Sharing in Google+ (CHI 2012)
- Eddi: Interactive Topic-Based Browsing of Social Status Streams (UIST 2010)
- Do Your Friends Make You Smarter? An Analysis of Social Strategies in Online Information Seeking (IP&M 2010)
- FeedWinnower: Layering Structures over Collections of Information Streams (CHI 2010)
- A Torrent of Tweets: Managing Information Overload in Online Social Streams (CHI 2010 Workshop)
- Exploring the Cognitive Consequences of Social Search (CHI 2009)
Visualization & Representation
Analyzing complex social systems requires new methods for navigating large-scale network, text, and other kinds of data. Finding different ways to help analysts represent and interact with data can provide novel insights into the study of these systems.
- Refinery: Visual Exploration of Large, Heterogeneous Networks through Associative Browsing (EuroVis 2015)
- GraphPrism: Compact Visualization of Network Structure (AVI 2012)
- Identifying Best Practices for Visualizing Photo Statistics and Galleries Using Treemaps (AVI 2016)
- EchoTree: Engaged Conversation when Capabilities are Limited (Technical Report 2012)
- Eddi: Interactive Topic-Based Browsing of Social Status Streams (UIST 2010)