Lisa Kaati
Visiting researcher at Department of Information Technology; Division of Computer Systems
- Mobile phone:
- +46 70 482 25 73
- E-mail:
- lisa.kaati@it.uu.se
- Visiting address:
- Hus 10, Regementsvägen 10
- Postal address:
- Box 524
751 20 UPPSALA
Short presentation
My research interests are in the area of terrorism and the Internet, and in particular how computer science, psychology, and statistics can be used to study different behaviors. My research is interdisciplinary and includes studies on digital hate and violent extremism in online environments.
Keywords
- data science
- violent extremism
- digital hate
- author profiling
- intelligence
- social media analysis
Biography
Dr. Lisa Kaati achieved a PhD in computer science from Uppsala University in 2008. Her principal research interests are in the area of terrorism and the Internet, and in particular how computer science, psychology and statistics can be used to study different behaviors. She is the author of over 40 academic articles and chapters and several reports.
Dr. Kaati has presented her findings before the Swedish Government, The Finish Government, The Commission of the European Union, and elsewhere. She is a member of the Academic Advisory Board of Europol’s Counter-terrorism Center and the Radicalisation Awareness Network (RAN) Advisory Board of Researchers. She is an associate editor of the journal Social Network Analysis and Mining.
Between 2008-2022 Dr. Kaati was working at the Swedish Defence Research Agency (FOI) where she was the head of the interdisciplinary Data science group. For 6 years, Dr. Kaati was working on a commission from the Swedish government to study violent extremist propaganda and hate speech online.
Publications
Selection of publications
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Detecting multipliers of jihadism on twitter
Part of Proc. 15th ICDM Workshops, p. 954-960, 2015
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Timeprints for identifying social media users with multiple aliases
Part of Security Informatics, 2015
-
A step towards detecting online grooming: Identifying adults pretending to be children
Part of Proc. 5th European Intelligence and Security Informatics Conference, p. 98-104, 2015
-
Detecting jihadist messages on twitter
Part of Proc. 5th European Intelligence and Security Informatics Conference, p. 161-164, 2015
-
Analysis and mining of tags, (micro)blogs, and virtual communities
Part of Encyclopedia of Social Network Analysis and Mining, p. 19-25, Springer, 2014
-
Time profiles for identifying users in online environments
Part of Proc. 1st Joint Intelligence and Security Informatics Conference, p. 83-90, 2014
-
Activity profiles in online social media
Part of Proc. 6th International Conference on Advances in Social Networks Analysis and Mining, p. 850-855, 2014
-
Detecting multiple aliases in social media
Part of Proc. 5th International Conference on Advances in Social Networks Analysis and Mining, p. 1004-1011, 2013
-
Author recognition in discussion boards
Part of National Symposium on Technology and Methodology for Security and Crisis Management, 2013
-
Analyzing the security in the GSM radio network using attack jungles
Part of Leveraging Applications of Formal Methods, Verification, and Validation, p. 60-74, 2010
-
A uniform (bi-)simulation-based framework for reducing tree automata
Part of Electronic Notes in Theoretical Computer Science, p. 27-48, 2009
-
Composed bisimulation for tree automata
Part of International Journal of Foundations of Computer Science, p. 685-700, 2009
-
Reduction Techniques for Finite (Tree) Automata
2008
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Computing Simulations over Tree Automata: Efficient Techniques for Reducing Tree Automata
Part of Tools and Algorithms for the Construction and Analysis of Systems, p. 93-108, 2008
-
Composed Bisimulation for Tree Automata
Part of Implementation and Application of Automata, p. 212-222, 2008
-
Bisimulation minimization of tree automata
Part of International Journal of Foundations of Computer Science, p. 699-713, 2007
-
Minimization of Non-deterministic Automata with Large Alphabets
Part of Implementation and Application of Automata, p. 31-42, 2006
Recent publications
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Words of Suicide: Identifying Suicidal Risk in Written Communications
Part of 2021 IEEE INTERNATIONAL CONFERENCE ON BIG DATA (BIG DATA), p. 2144-2150, 2021
-
Extreme adopters in digital communities.
Part of Journal of threat assessment and management, p. 72-84, 2020
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Introducing Digital-7 Threat Assessment of Individuals in Digital Environments
Part of 2020 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining (ASONAM), p. 720-726, 2020
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PRAT: a Tool for Assessing Risk in Written Communication
Part of 2019 IEEE International Conference on Big Data (Big Data), p. 4755-4762, 2019
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Assessment of risk in written communication: Introducing the Profile Risk Assessment Tool (PRAT)
2018
All publications
Articles in journal
-
Extreme adopters in digital communities.
Part of Journal of threat assessment and management, p. 72-84, 2020
-
Timeprints for identifying social media users with multiple aliases
Part of Security Informatics, 2015
-
A uniform (bi-)simulation-based framework for reducing tree automata
Part of Electronic Notes in Theoretical Computer Science, p. 27-48, 2009
-
Composed bisimulation for tree automata
Part of International Journal of Foundations of Computer Science, p. 685-700, 2009
-
Bisimulation minimization of tree automata
Part of International Journal of Foundations of Computer Science, p. 699-713, 2007
Chapters in book
-
Countering lone actor terrorism: Weak signals and online activities
Part of Understanding Lone Actor Terrorism, p. 266-279, Routledge, 2016
-
Analysis and mining of tags, (micro)blogs, and virtual communities
Part of Encyclopedia of Social Network Analysis and Mining, p. 19-25, Springer, 2014
Comprehensive doctoral thesis
Conference papers
-
Words of Suicide: Identifying Suicidal Risk in Written Communications
Part of 2021 IEEE INTERNATIONAL CONFERENCE ON BIG DATA (BIG DATA), p. 2144-2150, 2021
-
Introducing Digital-7 Threat Assessment of Individuals in Digital Environments
Part of 2020 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining (ASONAM), p. 720-726, 2020
-
PRAT: a Tool for Assessing Risk in Written Communication
Part of 2019 IEEE International Conference on Big Data (Big Data), p. 4755-4762, 2019
-
Linguistic markers of a radicalized mind-set among extreme adopters
Part of Proc. 10th ACM International Conference on Web Search and Data Mining, p. 823-824, 2017
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A Machine Learning Approach Towards Detecting Extreme Adopters in Digital Communities
Part of 2017 28th International Workshop on Database and Expert Systems Applications (DEXA), p. 1-5, 2017
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Gender Classification with Data Independent Features in Multiple Languages
Part of 2017 European Intelligence and Security Informatics Conference (EISIC), p. 54-60, 2017
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IoT Data Profiles: The Routines of Your Life Reveals Who You Are
Part of 2017 European Intelligence and Security Informatics Conference (EISIC), p. 61-67, 2017
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Identifying warning behaviors of violent lone offenders in written communication
Part of Proc. 16th ICDM Workshops, p. 1053-1060, 2016
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Linguistic analysis of lone offender manifestos
Part of Proc. 4th International Conference on Cybercrime and Computer Forensics, 2016
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Multi-domain alias matching using machine learning
Part of Proc. 3rd European Network Intelligence Conference, p. 77-84, 2016
- DOI for Multi-domain alias matching using machine learning
- Download full text (pdf) of Multi-domain alias matching using machine learning
-
Automatic detection of xenophobic narratives: A case study on Swedish alternative media
Part of Proc. 14th International Conference on Intelligence and Security Informatics, p. 121-126, 2016
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Identifying Warning Behaviors of Violent Lone Offenders in Written Communication
Part of 2016 IEEE 16Th International Conference On Data Mining Workshops (ICDMW), p. 1053-1060, 2016
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Semantic technologies for detecting names of new drugs on darknets
Part of Proc. 4th International Conference on Cybercrime and Computer Forensics, 2016
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Measuring online affects in a white supremacy forum
Part of Proc. 14th International Conference on Intelligence and Security Informatics, p. 85-90, 2016
-
Detecting multipliers of jihadism on twitter
Part of Proc. 15th ICDM Workshops, p. 954-960, 2015
-
Are You Really a Child?: A Machine Learning Approach To Protect Children from Online Grooming
Part of Proc. National Symposium on Technology and Methodology for Security and Crisis Management, 2015
-
Internet of Things and Future Threats Towards our Society
Part of Proc. National Symposium on Technology and Methodology for Security and Crisis Management, 2015
-
A step towards detecting online grooming: Identifying adults pretending to be children
Part of Proc. 5th European Intelligence and Security Informatics Conference, p. 98-104, 2015
-
Detecting jihadist messages on twitter
Part of Proc. 5th European Intelligence and Security Informatics Conference, p. 161-164, 2015
-
Time profiles for identifying users in online environments
Part of Proc. 1st Joint Intelligence and Security Informatics Conference, p. 83-90, 2014
-
Activity profiles in online social media
Part of Proc. 6th International Conference on Advances in Social Networks Analysis and Mining, p. 850-855, 2014
-
Detecting multiple aliases in social media
Part of Proc. 5th International Conference on Advances in Social Networks Analysis and Mining, p. 1004-1011, 2013
-
Author recognition in discussion boards
Part of National Symposium on Technology and Methodology for Security and Crisis Management, 2013
-
Analyzing the security in the GSM radio network using attack jungles
Part of Leveraging Applications of Formal Methods, Verification, and Validation, p. 60-74, 2010
-
Computing Simulations over Tree Automata: Efficient Techniques for Reducing Tree Automata
Part of Tools and Algorithms for the Construction and Analysis of Systems, p. 93-108, 2008
-
Composed Bisimulation for Tree Automata
Part of Implementation and Application of Automata, p. 212-222, 2008
-
Minimization of Non-deterministic Automata with Large Alphabets
Part of Implementation and Application of Automata, p. 31-42, 2006
-
Bisimulation Minimization of Tree Automata
Part of Implementation and Application of Automata, p. 173-185, 2006