Daniel M. Romero Associate Professor School of Information Center for the Study of Complex Systems Computer Science and Engineering (by courtesy) University of Michigan Contact: 3340 North Quad 105 S State St. Ann Arbor, MI 48109 drom@umich.edu Twitter: @DanielMRomero Publications, Advising, Professional Service, Teaching, CV

I am an Associate Professor of Information, Complex Systems, and Computer Science at the University of Michigan. I received my Ph.D at Cornell University Center for Applied Mathematics (CAM), where I was advised by Jon Kleinberg. Before coming to UM, I was a postdoc at Northwestern University Institute on Complex Systems (NICO) working with Brian Uzzi. My main research interest is the empirical and theoretical analysis of Social and Information Networks. I am particularly interested in understanding the mechanisms involved in network evolution, information diffusion, and interactions among people on the Web and in complex organizations.

Publications

• Y. Yu and D.M. Romero. "Does the Use of Unusual Combinations of Datasets Contribute to Greater Scientific Impact?" Proc. National Academy of Sciences (PNAS), 121 (41) e2402802121, 2024. [Supplemental Material] [Data and Code]

• A. Ananthasubramaniam, D. Jurgens, and D.M. Romero. "Networks and Identity Drive the Spatial Diffusion of Linguistic Innovation in Urban and Rural Areas." npj Complex, 1, 14, 2024. [Supplemental Material] [Data and Code]

• D. Gamba, Y. Yu, Y. Yuan, G. Schoenebeck, and D.M. Romero. "Exit Ripple Effects: Understanding the Disruption of Socialization Networks Following Employee Departures." Proc. of The Web Conference (WWW), 2024.

• M. Choi, D.M. Romero, and D. Jurgens. "Profile Update: The Effects of Identity Disclosure on Network Connections and Language." EPJ Data Sci, 45, 2024. [Supplemental Material] [Data and Code]

• H.K. Dambanemuya, D.M. Romero, and E-Á. Horvát. "Emergent Influence Networks in Good-Faith Online Discussions." Proc. 18th International AAAI Conference on Web and Social Media (ICWSM), 2024.

• A.N. Bhogal, V.J. Berrocal, D.M. Romero, M.A. Willis, V.G.V. Vydiswaran, and T.C. Veinot. "Social Acceptability of Health Behavior Posts on Social Media: An Experiment." American Journal of Preventive Medicine, 66(5), 870-876, 2024

• D. Maldeniya, M. De Choudhury, D. Garcia, and D.M. Romero. "Pulling Through Together: Social Media Response Trajectories in Disaster-Stricken Communities." Journal of Computational Social Science, 1-52, 2023.

• M. Choi, D. Jurgens, and D.M. Romero. "Analyzing the Engagement of Social Relationships During Life Event Shocks in Social Media." Proc. 17th International AAAI Conference on Web and Social Media (ICWSM), 2023.

• S. Hwang, E-Á. Horvát, and D.M. Romero. "Information Retention in the Multi-Platform Sharing of Science." Proc. 17th International AAAI Conference on Web and Social Media (ICWSM), 2023.

• H. Peng, D.M. Romero, and E-Á. Horvát. "Dynamics of Cross-Platform Attention to Retracted Papers." Proc. National Academy of Sciences (PNAS), 119 (25) e2119086119, 2022. [Supplemental Material] [Data and Code] Press coverage: The Washington Post, Inside Higher Ed, Le Monde (In French), Deutschlandfunk (German Radio)

• T.C. Veinot, P.J., Clarke, D.M. Romero, L.R. Buis, T.R. Dillahunt, V.G.V. Vydiswaran, A. Beals, L. Brown, O.Richards, A. Williamson, and M.G. Antonio. "Equitable Research PRAXIS: A Framework for Health Informatics Methods." IMIA Yearbook of Medical Informatics, 31(01), 307-316, 2022.

• P. Vaghela, R.K. Mothilal, D.M. Romero, and J. Pal. "Caste Capital on Twitter: A Formal Network Analysis of Caste Relations among Indian Politicians." Proc. 25th ACM Conference on Computer-Supported Cooperative Work and Social Computing (CSCW), 2022.

• H. Peng, Q. Ke, C. Budak, D.M. Romero, and YY Ahn. "Neural Embeddings of Scholarly Periodicals Reveal Complex Disciplinary Organizations." Science Advances, 7, eabb9004, 2021. [Supplementary Material] [Data] [Code]

• M. Choi, C. Budak, D.M. Romero, and D. Jurgens. "More than Meets the Tie: Examining the Role of Interpersonal Relationships in Social Networks." Proc. 15th International AAAI Conference on Web and Social Media (ICWSM), 2021. [Supplemental Material] [Code] [Video and Poster]

• H. Peng, A. Nematzadeh, D.M. Romero, and E. Ferrara. "Network Modularity Controls the Speed of Information Diffusion." Phys. Rev. E, 102, 052316, 2020. [Supplemental Material]

• D. Maldeniya, C. Budak, L. Robert, and D.M. Romero. "Herding a Deluge of Good Samaritans: How GitHub Projects Respond to Increased Attention." Proc. of The Web Conference (WWW), 2020. [Slides] [Video]

• V.G.V. Vydiswaran, D.M. Romero, X. Zhao, D. Yu, I. Gomez-Lopez, J.X. Lu, B.E. Iott, A. Baylin, E.C. Jansen, P. Clarke, V.J. Berrocal, R. Goodspeed, and T.C. Veinot. "Uncovering the relationship between food-related discussion on Twitter and neighborhood characteristics." Journal of the American Medical Informatics Association (JAMIA), 27(2), 254-264, 2020. Press coverage: The Counter, PatientEngagementHIT

• T. Ammari, S. Schoenebeck, and D.M. Romero. "How Self-declared Throwaway Accounts Enable Parenting Disclosure and Support on Reddit." Proc. 22nd ACM Conference on Computer-Supported Cooperative Work and Social Computing (CSCW), 2019.

• F. Zhang, R. Wang, E. Blohm, C. Budak, L. Robert, and D.M. Romero. "Participation of New Editors After Times of Shock on Wikipedia." Proc. 13th International AAAI Conference on Web and Social Media (ICWSM), 2019. [Slides]

• E.L. Platt and D.M. Romero. "Towards Attack Tolerant Networks: Concurrent Multipath Routing and the Butterfly Network." PLoS ONE, 14(4), 2019.

• T. Cunha, D. Jurgens, C. Tan, and D.M. Romero. "Are All Successful Communities Alike? Characterizing and Predicting the Success of Online Communities." Proc. of The Web Conference (WWW), 2019. [Slides] [Poster]

• H. Peng, C. Budak, and D.M. Romero. "Event-Driven Analysis of Crowd Dynamics in the Black Lives Matter Online Social Movement." Proc. of The Web Conference (WWW), 2019. [Slides] [Poster]

• D.M. Romero, B. Uzzi, and J. Kleinberg. "Social Networks under stress: Specialized Team Roles and their Communication Structure." ACM Transactions on the Web (TWEB), Volume 13, Issue 1, Article 6, 2019.

• E.L. Platt and D.M. Romero. "Network Structure, Efficiency, and Performance in WikiProjects." Proc. 12th International AAAI Conference on Web and Social Media (ICWSM), 2018. [Data and Code] [Slides]

• V.G.V. Vydiswaran, D.M. Romero, X. Zhao, D.Yu, I. Gomez-Lopez, J.X. Lu, B. Iott, A. Baylin, P. Clarke, V. Berrocal, R. Goodspeed, and T. Veinot. "'Bacon Bacon Bacon': Food-related Tweets and Sentiment in Metro Detroit" Proc. 12th International AAAI Conference on Web and Social Media (ICWSM), 2018. Press coverage: Detour Detroit

• Y. Shen, P. Clarke, I. Gomez-Lopez, A.B. Hill, D.M. Romero, R. Goodspeed, V. J. Berrocal, V.G.V. Vydiswaran, and T. Veinot. "Using Social Media to Assess the Community Food Store Environment: Comparing Yelp Reviews with a Direct Observation Audit Instrument for Grocery Stores." Public Health Nutrition, 2018.

• R. Goodspeed, X. Yan, J Hardy, V.G.V. Vydiswaran, V. Berrocal, P. Clarke, D.M. Romero, I. Gomez-Lopez, and T. Veinot. "Comparing the Data Quality of Global Positioning System Devices and Mobile Phones for Assessing Relationships Between Place, Mobility, and Health: Field Study." JMIR Mhealth and Uhealth, 6(8):e168, 2018.

• S. Chakraborty, J. Pal, P. Chandra, and D.M. Romero. "Political Tweets and Mainstream News Impact in India: A Mixed Methods Investigation into Political Outreach." Proc. ACM Conference on Computing and Sustainable Societies (COMPASS), 2018.

• T. Ammari, S. Schoenebeck, and D.M. Romero. "Pseudonymous Parents: Comparing Parenting Roles and Identities on the Mommit and Daddit Subreddits." Proc. ACM Conference on Human Factors in Computing (CHI), 2018. [Code]

• J. Hardy, T.C. Veinot, X. Yan, V.J. Berrocal, P. Clarke, R. Goodspeed, I.N. Gomez, D.M. Romero, and V.G.V. Vydiswaran. "User Acceptance of Location-Tracking Technologies in Health Research: Implications for Study Design and Data Quality." Journal of Biomedical Informatics, 2018.

• F. Zhang, D. Livneh, C. Budak, L. Robert, and D.M. Romero. "Crowd Development: The Interplay Between Crowd Evaluation and Collaborative Dynamics in Wikipedia." Proc. 21st ACM Conference on Computer-Supported Cooperative Work and Social Computing (CSCW), 2018.

• S. Mukherjee, D.M. Romero, B. Jones and B. Uzzi. "The Nearly Universal Link Between the Age of Past Knowledge and Tomorrow's Breakthroughs in Science and Technology: The Hotspot." Science Advances, 3, e1601315, 2017. Press coverage: CS Monitor

• F. Zhang, D. Livneh, C. Budak, L. Robert, and D.M. Romero. "Shocking the Crowd: The Effect of Censorship Shocks on Chinese Wikipedia." Proc. 11th International AAAI Conference on Web and Social Media (ICWSM), 2017. [Slides]

• D. Maldeniya, A. Varghese, T. Stuart, and D.M. Romero. "The Role of Optimal Distinctiveness and Homophily in Online Dating." Proc. 11th International AAAI Conference on Web and Social Media (ICWSM), 2017. [Slides][Poster]

• I.N. Gomez-Lopez, P. Clarke, A.B. Hill, D.M. Romero, R. Goodspeed, V.J. Berrocal, V.G.V. Vydiswaran, and T.C. Veinot. "Using Social Media to Identify Sources of Healthy Food in Urban Neighborhoods." Journal of Urban Health, 2017.

• D.M. Romero, K. Reinecke, and L. Robert. "The Influence of Early Respondents: Information Cascade Effects in Online Event Scheduling." Proc. 10th ACM Conference on Web Search and Data Mining (WSDM), 2017. [Slides][Poster]

• D.M. Romero, B. Uzzi, and J. Kleinberg. "Social Networks Under Stress." Proc. 25th ACM International World Wide Web Conference (WWW), 2016. (Best Paper Award) [Slides]

• L. Robert and D.M. Romero. "The Influence of Diversity and Experience on the Effects of Crowd Size." Journal of the Association for Information Science and Technology (JASIST), 2016.

• D.M. Romero, R. Swaab, B. Uzzi, and A. Galinsky. "Mimicry Is Presidential: Linguistic Style Matching in Presidential Debates and Improved Polling Numbers." Personality and Social Psychology Bulletin, Vol. 41(10) 1311-1319, 2015. [Video] Press coverage: Fortune, Pacific Standard, The Boston Globe, New York Magazine

• D.M. Romero, D. Huttenlocher, and J. Kleinberg. "Coordination and Efficiency in Decentralized Collaboration." Proc. 9th International AAAI Conference on Web and Social Media (ICWSM), 2015. [Slides]

• L. Robert and D.M. Romero "Crowd Size, Diversity and Performance." Proc. ACM Conference on Human Factors in Computing (CHI), 2015. [Slides]

• C. Kuehn, E.A. Martens, and D.M. Romero. "Critical Transitions in Social Network Activity." Journal of Complex Networks, 2(2), 141-152, 2014. [Summary in Oxford University Press's Blog]

• N. Mishra, D.M. Romero, and P. Tsaparas. "Estimating the Relative Utility of Networks for Predicting User Activities." Proc. 22th ACM International Conference on Information and Knowledge Management (CIKM), 2013. [Slides]

• D.M. Romero, C. Tan, and J. Ugander. "On the Interplay between Social and Topical Structure." Proc. 7th International AAAI Conference on Web and Social Media (ICWSM), 2013. [Slides]

• D.M. Romero, B. Meeder, and J. Kleinberg. "Differences in the Mechanics of Information Diffusion Across Topics: Idioms, Political Hashtags, and Complex Contagion on Twitter." Proc. 20th ACM International World Wide Web Conference (WWW), 2011. [Slides] [List of hashtags with categories] Press coverage: New York Times, CBS News

• D.M. Romero, W. Galuba, S. Asur, and B.A. Huberman "Influence and Passivity in Social Media." Proc. European Conference on Machine Learning and Knowledge Discovery in Databases (ECML PKDD), 2011. (2021 Test of Time Award) [Slides] Press coverage: New Scientist, The Economist, BBC, MIT Tech Review, CNet, Mashable

• J. Cheng, D.M. Romero, B. Meeder, and J. Kleinberg. "Predicting Reciprocity in Social Networks. " Proc. 3rd IEEE Conference on Social Computing (SocialCom), 2011.

• D.M. Romero, B. Meeder, V. Barash, and J. Kleinberg "Maintaining Ties on Social Media Sites: The Competing Effects of Balance, Exchange, and Betweenness." Proc. 5th International AAAI Conference on Web and Social Media (ICWSM), 2011.

• M.J. Brzozowski and D.M. Romero "Who Should I Follow? Recommending People in Directed Social Networks." Proc. 5th International AAAI Conference on Web and Social Media (ICWSM), 2011.

• D.M. Romero, C. Kribs-Zaleta, A. Mubayi, and C. Orbe "An Epidemiological Approach to the Spread of Political Third Parties." Discrete and Continuous Dynamical Systems - B, 15, 707-738, 2011.

• D.M. Romero and J. Kleinberg, "The Directed Closure Process in Hybrid Social-Information Networks, with an Analysis of Link Formation on Twitter." Proc. 4th International AAAI Conference on Web and Social Media (ICWSM), 2010. [Slides]

• S. Yardi, D.M. Romero, G. Schoenebeck, and d. boyd, "Detecting spam in a Twitter network." First Monday, Volume 15, Number 1, 2010.

• B.A. Huberman, D.M. Romero, and F. Wu, "Social Networks that Matter: Twitter Under the Microscope." First Monday, Volume 14, Number 1, 2009. Press coverage: Wall Street Journal

• B.A. Huberman, D.M. Romero, and F. Wu, "Crowdsourcing, Attention and Productivity." Journal of Information Sciences, Volume 35, Number 6, pp. 758-765, 2009. [Slides] Press coverage: New Scientist

Students and Postdocs

• Current

  Abraham Israeli (Postdoctoral Fellow)
  Aparna Ananthasubramaniam (PhD Candidate)
  Yulin Yu (PhD Candidate)
  David Gamba (PhD Student)
  Sidney Xiang (PhD Student)
  Anders Giovanni Møller (Visiting PhD Student)
  

• Alumni

  • Dr. Ed Platt (PhD Student)
    Dr. Hao Peng (2022, PhD Student)
    Dr. Danaja Maldeniya (PhD Student)
    Dr. Minje Choi (PhD Student)
    Dr. Chris Quarles (PhD Student)
    Dr. Iris Gomez-Lopez (Postdoctoral Fellow)
    Dr. Tiago Cunha (Postdoctoral Fellow)
    Dr. Patrick Park (MIDAS Fellow)
    
  • Louise Zhu (MS Student)
    Amanda Hardy (MS Student)
    Yulin Yu (MS Student)
    Yin Yin (MS Student)
    Arushi Jain (MS Student)
    Stella Seonghwa Choi (MS Student)
    Karthik Ramanathan (MS Student)
    Arun Varghese (MS Student)
    Ruihan Wang (MS Student)
    Muhan Yuan (MS Student)
    
  • Xingyao Wang (Undergraduate Student)
    Xingyu Lu (Undergraduate Student)
    Ziyang Ji (Undergraduate Student)
    Jiaxin Ye (Undergraduate Student)
    Eric Blohm (Undergraduate Student)
    Danielle Livneh (Undergraduate Student)
    

Professional Service

• Journal Editorial Positions:

  EPJ Data Science (Associate Editor 2018 - present)
  Applied Network Science (Editorial Board 2015 - present)
  

• Program Committee Member (most years)

  The Web Conference (WWW)
  The International AAAI Conference on Web and Social Media (ICWSM)
  The ACM Conference on Web Search and Data Mining (WSDM)
  The ACM Conference on Computer-Supported Cooperative Work and Social Computing (CSCW)
  

Teaching

• University of Michigan School of Information:

  Fall 2015-2023: SI 301 - Models of Social Information Processing

  Winter/Spring/Fall 2021-2023: SIADS 652: Network Analysis

  Winter 2017, Winter 2019: SI 710 - Doctoral Seminar on Information Diffusion in Social Networks

  Winter 2018: SI 370 - Data Exploration

• University of Michigan Center for the Study of Complex Systems:

  Winter 2022-2023: CMPLXSYS/SOC 251: Computational Social Science

  Winter 2021: QMSS 251: Computational Social Science (Co-taught with Elizabeth Bruch and Jeff Lockhart)

• Coursera:

  Applied Social Network Analysis in Python

• Ithaca College Mathematics Department:

  Spring 2012: Business Statistics

  Fall 2011: Applied Calculus I

  Spring 2011: Calculus II

• Auburn Correctional Facility through the Cornell Prison Education Program (CPEP):

  Fall 2010: High School Algebra I

  Spring 2010: High School Algebra II

  Fall 2009: High School Algebra I