The 2023 CASOS Summer Institute will be held as a hybrid event June 5-11th! Find out more information here.

Welcome to Center for Computational Analysis of Social and Organizational Systems (CASOS)!


Addressing complex real world issues through a combined social-science & computer-science approach, using advanced techniques from network science, text-mining, and agent-based modeling.

  • Leader in network science, network analysis and network visualization.
  • Leader in network dynamics and linking social networks to other data - geo-spatial, knowledge, tasks etc.
  • Leading analytic tools for network analysis - ORA-LITE, AutoMap, Construct
  • University wide center with faculty and students in multiple departments
  • Multi-disciplinary research - working with Academia, Industry, Government
  • Applications related to Law Enforcement, Counter-terrorism, Health, Nuclear Deterrence, Cyber-Security, Social Change, Organizational Design, Insider Threat, Population Dynamics, Social Media.

Director: Prof. Kathleen M. Carley
kathleen.carley@cs.cmu.edu :: homepage

Recent News

  • CASOS Director Kathleen M. Carley is interviewed for the Quanta Magazine article "Chatbots Don't Know What Stuff Isn't". Read the full article here.
  • CASOS Graduate student Charity Jacobs was selected for the prestigious General Omar N. Bradley Research Fellowship in Mathematics for FY 2022.
  • CASOS Alumni Jeremy Straugher has been selected for promotion to Lieutenant Colonel. Congratulations to Jeremy!
  • CASOS graduate student Catherine King has a new publication out in Social Network Analysis Mining, "Gender dynamics on Twitter during the 2020 U.S. Democratic presidential primary". Read the publication here.
  • CASOS director Kathleen M. Carley is interviewed for the Rolling Stone article "Twitter Bots Are Promising Cheap Guns to Anyone Using the N-Word". Read the full article here.
  • CASOS graduate student Danielle Bellutta has a new publication out in the Journal of Big Data entitled "Investigating coordinated account creation using burst detection and network analysis". Read the paper here.
  • CASOS director Kathleen M. Carley is interviewed and quoted in the french publication Science & Medicine
  • in the January 2023 issue in the article entitled, "Les Nouvelles Règles de Twitter Inquiètent la Recherche" ("New Twitter Rules Worry Researchers"). Access the acticle here.
  • CASOS and IDeaS Center graduate student Lynnette Ng has a new publication in Applied Network Science, "A combined synchronization index for evaluating collective action social media". Check out the publication here
  • CASOS graduate student Daniele Bellutta has a new publication in the Journal of Big Data, "Investigating coordinated account creation using burst detection and network analysis". Check out the publication here.
  • Director Kathleen M. Carley was interviewed for a new article on GRID. Check out her comments about Twitter API access for researchers here.
  • Read More...

ORA-LITE

Analyze statistics, social network analysis (SNA), dynamic network analysis (DNA), link analysis software.

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The Professional version of ORA which is available from Netanomics (www.netanomics.com). ORA is a network science tool used for network science and visualization

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CASOS used network science tools such as ORA, Automap, and Construct. These tools are used for network science and visualization