Gerardo Ignacio Simari - Home Page
Background
-
Universidad
Nacional del Sur
(UNS) and Consejo Nacional de Investigaciones
Científicas y Técnicas (CONICET): 2014–Present
·
Investigador Independiente (Independent Researcher) at CONICET: 2022–Present
·
Investigador Adjunto (Adjunct Researcher) at CONICET:
2017–2022
·
Investigador Asistente (Assistant Researcher) at CONICET:
2014–2017
·
Profesor Adjunto (Assistant Professor) at UNS: 2015–Present
·
Director of the Cognitive
Engineering and Databases Research Group (CEDB): 2014–Present
·
Member of the Institute for
Computer Science and Engineering (ICIC) UNS-CONICET: 2014–Present
·
Member of the AI Research
and Development Laboratory (LIDIA): 2014–Present
-
Arizona
State University, School of Computing and Augmented
Intelligence – Adjunct Professor: 05/2018–06/2025
-
University
of Oxford: 2011–2014
·
Member of the Information Systems Group: 2011–2014
·
EPSRC Senior Researcher: 2012–2014
·
Fulford Junior Research
Fellow at Somerville College, University of Oxford: 2011–2013
·
ERC/Google Postdoctoral Research Assistant: 2011–2012
-
University
of Maryland College Park: 2005–2010
·
Member of the Laboratory
for Computational Cultural Dynamics (LCCD): 2005–2010
·
Degree: Ph.D. in Computer
Science, University of Maryland College Park (2010),
under the supervision of V.S. Subrahmanian
·
Degree:
Master of Science, University of Maryland College Park (2007)
-
Universidad
Nacional del Sur: 1998–2005
·
Member of the AI Research
and Development Laboratory (LIDIA): 2002–2005
·
Degree: Magister in
Computer Science, Universidad Nacional del Sur, Argentina (2004), under the
supervision of Simon D. Parsons
and Marcelo A. Falappa
·
Degree: Licenciado in Ciencias de la Computación (Computer Science), Universidad
Nacional del Sur, Argentina (2002)
(very short description of the Licenciatura degree according to Wikipedia)
Research Interests
-
Reasoning under Uncertainty
-
Ontology Languages for the
Semantic Web
-
Reasoning with Preferences
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Cyber Security and Cyber
Warfare
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Inconsistency Management in
Relational Databases and Ontologies
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Reasoning about Complex
Networks
-
Logic Programming,
Probabilistic Logic Programming
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Autonomous Agents and
Multi-agent Systems
-
Belief Revision
Current and Selected Past R&D Projects
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Tools for Automated
Reasoning for the Development of Intelligent Socio-Technical Systems (Universidad Nacional del Sur)
-
Automated Hypothesis
Generation in Intelligent Systems with Applications to Cybersecurity (CONICET)
-
HAYSTAC: Hidden Activity
Signal and Trajectory Anomaly Characterization (IARPA)
-
SPADE: Strategic
Probabilistic Attitudinal Diplomacy Engine (DARPA)
-
MIREL: MIning
and REasoning with Legal texts (EU H2020)
-
Reasoning about Cyber Attribution (US Office of Naval Research)
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Query Answering under Uncertainty in the
Semantic Web (Google Research,
UK Engineering and Physical Sciences Research Council)
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Combinatorial and Scalable Initiation in Complex Networks (US Army Research Office)
-
SOMA: Stochastic Opponent Modeling Agents
(US Air Force Office of Scientific Research)
-
PAGE: Policy Analytics
Generation Engine (US Army Research Office)
-
SIMS: Scalable Incompleteness and
Inconsistency Management Strategies (US Office of Naval Research)
-
CARA: Cognitive
Architecture for Reasoning about Adversaries (US Air Force Office of Scientific Research)
Selected Publications [ dblp ] [ Google Scholar ] [ Scopus ] [ ORCID ]
~~~ 2025 ~~~
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The Impact of Strategic Communication in
Coopetitive Multi-Agent Settings
Julian Baldwin, Lawrence Birnbaum, David
Chen, Natalia Denisenko, Dana Nau, José N.
Paredes, Chiara Pulice, Gerardo I. Simari, VS Subrahmanian, Rand Waltzman
Transactions on Computational Social
Systems, In Press, 2025.
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Probabilistic Foundations for Metacognition via
Hybrid-AI
Paulo Shakarian, Gerardo I. Simari,
Nathaniel Bastian
Proceedings of the AAAI Spring
Symposium on Machine Learning and Knowledge Engineering for Trustworthy
Multimodal and Generative AI (AAAI MAKE 2025), pp. 389–393.
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Multiple Distribution Shift – Aerial
(MDS-A): Challenge Dataset for Understanding Model Performance and Baselines
with Hybrid AI Error Detection
Noel Ngu, Aditya Taparia, Gerardo I. Simari, Mario Leiva, Ransalu
Senanayake, Paulo Shakarian, Nathaniel Bastian, John Corcoran
Proceedings of the AAAI Spring
Symposium on Machine Learning and Knowledge Engineering for Trustworthy
Multimodal and Generative AI (AAAI MAKE 2025), pp. 379–382.
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A Conceptual Framework for AI Capability
Evaluations
María
Victoria Carro, Denise Alejandra Mester, Francisca Gauna
Selasco, Luca Nicolás Forziati
Gangi, Matheo Sandleris Musa, Lola Ramos Pereyra, Mario Leiva, Juan
Gustavo Corvalan, Maria
Vanina Martinez, Gerardo Simari
Proceedings of the 2025 ICML
Workshop on Technical AI Governance (TAIG), To
Appear.
~~~ 2024 ~~~
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Neighborhood-based Argumental
Community Support in the Context of Multi-topic Debates
Irene M.
Coronel, Melisa Gisselle Escañuela Gonzalez, Diego C. Martinez,
Gerardo I. Simari, Maximiliano C. D. Budán
International Journal of Approximate
Reasoning, 170 (2024):109189.
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Engineering User-centered Explanations to
Query Answers in Ontology-driven Socio-technical Systems
Juan Carlos
L. Teze, José N. Paredes, Maria Vanina Martinez, Gerardo I. Simari
Semantic Web Journal, In Press, online first in 2023.
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Abduction of Domain Relationships from Data for
VQA
Al Mehdi Saadat Chowdhury, Paulo Shakarian,
Gerardo I. Simari
Proceedings of the 40th
International Conference on Logic Programming (ICLP 2024, Technical
Communications), pp. 168–174.
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Geospatial Trajectory Generation via Efficient
Abduction: Deployment for Independent Testing
Divyagna Bavikadi,
Dyuman Aditya, Devendra Parkar,
Paulo Shakarian, Gerardo I. Simari, Graham Mueller, Chad Parvis
Proceedings of the 40th
International Conference on Logic Programming (ICLP 2024, Technical
Communications), pp. 274–287
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A Mathematical Conceptualization of Bundle Sets
in Defeasible Logic Programming
Yamil O.
O. Soto, Cristhian Ariel Deagustini, Maria Vanina Martinez, Gerardo I. Simari
2024 ACM/SIGAPP Symposium on Applied
Computing, Knowledge Representation and Reasoning Track (KRR@SAC), pp. 779–786.
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Towards a Dialogue Game-based Semantics for
Extended Abstract Argumentation Frameworks based on Indecision-Blocking
Yamil O.
O. Soto, Cristhian Ariel Deagustini, Maria Vanina Martinez, Gerardo I. Simari
Proceedings of the 16th
International Conference on Scalable Uncertainty Management (SUM 2024),
Springer Nature Switzerland, pp. 445–460.
~~~ 2023 ~~~
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Neuro Symbolic Reasoning and Learning
Paulo
Shakarian, Gerardo I. Simari, Chitta Baral, Bowen Xi, Lahari Pokala
SpringerBriefs in Computer Science, Springer 2023,
ISBN 978-3-031-39178-1.
-
Scalable Query Answering Under Uncertainty to
Neuroscientific Ontological Knowledge: The NeuroLang
Approach
Gaston E. Zanitti, Yamil O. O.
Soto, Valentin Lovene, Maria Vanina Martinez, Ricardo O.
Rodriguez, Gerardo I. Simari, Demian Wassermann
Neuroinformatics 21(2): 407-425 (2023).
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A Neuro-symbolic Approach to Argument Comparison
in Structured Argumentation
Damián
A. Furman, Stephanie A. Malvicini, Maria Vanina Martinez, Paulo Shakarian, Gerardo I. Simari, Yamil O. Soto
22nd International Conference of the
Italian Association for Artificial Intelligence (AI3@AI*AI 2023) 2023.
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A Multi-Agent System for Addressing
Cybersecurity Issues in Social Networks
Antonella
C. Garcia, Maria Vanina Martinez, Cristhian A. D. Deagustini, Gerardo I. Simari
1st Workshop on AI-driven
heterogeneous data management: Completing, merging, handling inconsistencies
and query-answering (ENIGMA@KR 2023), CEUR 3495, pp. 43–54.
~~~ 2022 ~~~
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Inconsistency-tolerant Query Answering for
Existential Rules
Thomas Lukasiewicz, Enrico Malizia,
Cristian Molinaro, Maria
Vanina Martinez, Andreas Pieris,
Gerardo I. Simari
Artificial Intelligence 307.103685
(2022).
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Local Belief Dynamics in Network Knowledge Bases
Fabio R. Gallo, Gerardo I. Simari, Maria Vanina Martinez, Natalia
Abad Santos, Marcelo A. Falappa
ACM Transactions on Computational
Logic 23:1–36 (2022).
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An Approach to Improve Argumentation-Based Epistemic Planning with
Contextual Preferences
Juan Carlos L. Teze, Lluis Godo, Gerardo I.
Simari
International Journal of Approximate Reasoning
151:130–163 (2022)
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The HEIC Application Framework for Implementing XAI-based
Socio-technical Systems
José N. Paredes, Juan Carlos
L. Teze, Maria Vanina Martinez,
Gerardo I. Simari
Online Social Networks and Media 32
(2022) 100239.
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Argumentation-based Query Answering under Uncertainty with Application
to Cybersecurity
Mario A. Leiva, Alejandro J.
García, Paulo Shakarian, Gerardo I. Simari
Big Data
and Cognitive Computing 6(3):91, 2022
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Extensions to Generalized Annotated Logic and an Equivalent Neural
Architecture
Paulo Shakarian, Gerardo I. Simari
Proceedings
of the 4th International Conference on Transdisciplinary AI (TransAI 2022), pp. 63–70.
~~~ 2021 ~~~
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Detecting Malicious Behavior in Social Platforms via Hybrid Knowledge-
and Data-driven Systems
Jose N. Paredes, Gerardo I. Simari, Maria Vanina Martinez, Marcelo A.
Falappa
Future Generation Computer Systems,
125:232–246 (2021).
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The Big-2/ROSe Model of Online Personality
Gerardo I. Simari, Maria Vanina Martinez, Fabio R.
Gallo, Marcelo A. Falappa
Cognitive Computation 13
(5):1198–1214 (2021).
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Incremental Computation for Structured Argumentation over Dynamic DeLP
Knowledge Bases
Gianvincenzo Alfano, Sergio Greco,
Francesco Parisi, Gerardo I. Simari, Guillermo R. Simari
Artificial Intelligence 300, 103553
(2021).
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Labeled Bipolar Argumentation Frameworks
Melisa G. Escañuela
Gonzalez, Maximiliano C. D. Budan,
Gerardo I. Simari, Guillermo R. Simari
Journal of Artificial Intelligence
Research, 70:1557–1636 (2021).
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Guest Editorial Argumentation-Based Reasoning
Francesco Parisi, Gerardo I. Simari
IEEE Intelligent Systems
36(2):1557–1636 (2021).
~~~ 2020 ~~~
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NetDER: An
Architecture for Reasoning about Malicious Behavior
Jose N. Paredes, Gerardo I. Simari, Maria
Vanina Martinez, Marcelo A. Falappa
Information Systems Frontiers,
Information Systems Frontiers 23(1):185–201 (2021, online first 2020).
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Guidelines for the Analysis and Design of
Argumentation-based Recommendation Systems
Mario A.
Leiva, Maximiliano C.D. Budán, Gerardo I.
Simari
IEEE Intelligent Systems, 35(5):28–37, 2020.
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A Logic Programming Approach to Predict
Enterprise-Targeted Cyberattacks
Mohammed Almukaynizi, Ericsson Marin, Malay Shah, Eric Nunes,
Gerardo I. Simari, Paulo Shakarian
Data Science in Cybersecurity and
Cyberthreat Intelligence. Intelligent Systems Reference Library vol. 177,
Springer-Verlag, ISBN 978-3-030-38787-7, pp. 13–32, 2020.
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Towards Effective and Efficient Approximate
Query Answering in Probabilistic DeLP
Mario A. Leiva, Gerardo I. Simari,
Alejandro García
Proceedings of the 4th Workshop on
Advances In Argumentation In Artificial Intelligence
co-located with the 19th International Conference of the Italian Association
for Artificial Intelligence (AI3@AI*AI 2020), 103–109.
~~~ 2019 ~~~
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Predicting user reactions to Twitter feed
content based on personality type and social cues
Fabio R.
Gallo, Gerardo I. Simari, Maria Vanina Martinez, Marcelo A. Falappa
Future Generation Computer Systems,
110:918–930, 2020
(online first 2019).
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Cyber Threat Analysis with Structured
Probabilistic Argumentation
Mario A.
Leiva, Gerardo I. Simari, Guillermo R. Simari, Paulo Shakarian
Proceedings of the 3rd Workshop on
Advances In Argumentation In Artificial Intelligence
co-located with the 18th International Conference of the Italian Association
for Artificial Intelligence (AI3@AI*AI 2019), CEUR vol. 2528, pp. 50–64., 2019.
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BEEF: Balanced English Explanations of Forecasts
Sachin Grover, Chiara Pulice, Gerardo I. Simari, V.S. Subrahmnian
IEEE Transactions on Computational
Social Systems, 6(2):350–364, 2019.
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From Data to Knowledge Engineering for
Cybersecurity
Gerardo
I. Simari
Proceedings of the 28th
International Joint Conference on Artificial Intelligence (IJCAI 2019).
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Explanation-Friendly Query Answering under
Uncertainty
Maria Vanina Martinez, Gerardo I.
Simari
Proceedings of the 3rd International
Joint Conference on Rules and Reasoning (RuleML+RR
2019), LNCS vol. 11810, Springer-Verlag, pp. 65–103.
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DAQAP: Defeasible Argumentation Query Answering
Platform
Mario A.
Leiva, Gerardo I. Simari, Sebastian Gottifredi,
Alejandro J. Garcia, Guillermo Simari
Proceedings of the 13th
International Confernce on Flexible Query Answering
Systems (FQAS 2019), LNCS vol. 11529, Springer-Verlag, pp. 126–138.
~~~ 2018 ~~~
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An Incremental Approach to Structured
Argumentation over Dynamic Knowledge Bases
Gianvincenzo
Alfano, Sergio Greco, Francesco Parisi, Gerardo I. Simari, Guillermo R. Simari
Proceedings
of the 16th International Conference on Principles of Knowledge Representation
and Reasoning (KR 2018).
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Lightweight Tag-Aware Personalized
Recommendation on the Social Web Using Ontological Similarity
Zhenghua Xu, Oana Tifrea-Marciuska, Thomas Lukasiewicz, Maria Vanina
Martinez, Gerardo I. Simari, Cheng Chen
IEEE
Access 6:35590–35610 (2018).
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Ontological Query Answering under Many-Valued
Group Preferences in Datalog+/-
Bettina
Fazzinga, Thoma Lukasiewicz, Maria
Vanina Martinez, Gerardo I. Simari, Oana Tifrea-Marcisuka
International
Journal of Approximate Reasoning 93, 354–371, 2018.
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Leveraging Probabilistic Existential Rules for
Adversarial Deduplication
José
N. Paredes, Maria Vanina Martinez,
Gerardo I. Simari, Marcelo A. Falappa
Proceedings
of the 2nd Workshop on Logics for Reasoning about Preferences, Uncertainty, and
Vagueness (PRUV@IJCAR 2018).
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DARKMENTION: A Deployed System to Predict
Enterprise-Targeted External Cyberattacks
Mohammed Almukaynizi, Ericsson Marin, Eric Nunes, Paulo Shakarian,
Gerardo I. Simari, Dipsy Kapoor, Timothy Siedlecki
Proceedings
of the 2018 IEEE International Conference on Intelligence and Security
Informatics (ISI 2018).
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First Steps towards Data-Driven Adversarial
Deduplication
José
N. Paredes, Gerardo I. Simari, Maria Vanina Martinez, Marcelo A. Falappa
Information
9(8):189 (2018).
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Inferring Quantitative Preferences: Beyond
Logical Deduction
Maria Vanina Martinez, Lluis
Godo, Gerardo I. Simari
Proceedings
of the 12th International Conference on Scalable Uncertainty Management (SUM
2018).
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At-Risk System Identification via Analysis of
Discussions on the Darkweb
Eric
Nunes, Paulo Shakarian, Gerardo I. Simari
Proceedings
of eCrime 2018 (APWG Symposium on Electronic Crime
Research), pp. 1–12.
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Incremental Computation of Warranted Arguments
in Dynamic Defeasible Argumentation: The Rule Addition Case
Gianvincenzo
Alfano, Sergio Greco, Francesco Parisi, Gerardo I. Simari, Guillermo R. Simari
Proceedings
of the 33rd ACM/SIGAPP Symposium On Applied Computing
(SAC 2018), pp. 911–917.
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Artificial
Intelligence Tools for Cyber Attribution
Eric Nunes, Paulo Shakarian, Gerardo I. Simari, Andrew Ruef
SpringerBriefs in Computer Science, 1st. Edition
(2018), ISBN 978-3-319-73787-4.
~~~ 2017 ~~~
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Reasoning about Sentiment and Knowledge Diffusion
in Social Networks
Fabio R. Gallo,
Gerardo I. Simari, Maria Vanina Martinez,
Natalia Abad Santos, Marcelo A. Falappa
IEEE Internet Computing 21(6)8–17,
2017.
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A Probabilistic Logic of Cyber Deception
Sushil Jajodia,
Noseong Park, Fabio Pierazzi,
Andrea Pugliese, Edoardo Serra, Gerardo I. Simari, V.S. Subrahmanian
IEEE Transactions on Information Forensics and
Security, 12(11):2532–2544.
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Ontology-Based Data Access Leveraging Subjective Reports
Gerardo I. Simari,
Cristian Molinaro, Maria
Vanina Martinez, Livia Predoiu,
Thomas Lukasiewicz
SpringerBriefs in Computer Science, 1st. Edition
(2017), ISBN 978-3-319-65229-0.
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Measuring Cyber Attribution In
Games
Andrew Ruef, Eric Nunes, Paulo Shakarian, Gerardo I. Simari
Proceedings of eCrime 2017 (Symposium on Electronic Crime Research), pp.
28–32.
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A First Approach to Belief Dynamics in Complex
Social Networks
Fabio R. Gallo,
Gerardo I. Simari, Maria Vanina Martinez,
Natalia Abad Santos, Marcelo A. Falappa
Proceedings of the 11th Alberto Mendelzon International Workshop on Foundations of Data
Management (AMW 2017).
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An Approach to Characterize Graded Entailment of
Arguments through a Label-based Framework
Maximiliano Budán, Gerardo I. Simari, Ignacio Viglizzo, Guillermo R. Simari
International
Journal of Approximate Reasoning 82, 242–269.
~~~ 2016 ~~~
Haris Aziz,
Elias Bareinboim, Yejin
Choi, Daniel J. Hsu, Shivaram Kalyanakrishnan, Reshef Meir, Suchi Saria, Gerardo
I. Simari, Lirong Xia, William Yeoh
IEEE Intelligent
Systems 31(1): 56–66, 2016.
-
Probabilistic Models over Weighted Orderings:
Fixed-Parameter Tractable Variable Elimination
Thomas Lukasiewicz,
Maria Vanina Martinez, David Poole, and Gerardo I. Simari
Proceedings of the
15th International Conference on Principles of Knowledge Representation and
Reasoning (KR 2016), pp. 494–504.
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Basic Probabilistic Ontological Data Exchange
with Existential Rules
Thomas Lukasiewicz, Maria Vanina Martinez, Livia Predoiu, and
Gerardo I. Simari
Proceedings of the
30th AAAI Conference on Artificial Intelligence (AAAI 2016).
-
A Quantitative Approach to Belief Revision
in Structured Probabilistic Argumentation
Gerardo I. Simari,
Paulo Shakarian, and Marcelo A. Falappa
Annals of
Mathematics and Artificial Intelligence, 76(3–4):375–408, 2016.
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Argumentation Models for Cyber Attribution
Eric Nunes, Paulo
Shakarian, Gerardo I. Simari, and Andrew Ruef
Proceedings of the 2016 International Symposium on
Foundations of Open Source Intelligence and Security Informatics (FOSINT-SI
2016).
Selected
by the FOSINT-SI Program Committee as the Best Paper.
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Using Argument Features to Improve the Argumentation Process
Maximiliano C. D. Budan, Gerardo I. Simari, and Guillermo R. Simari
Proceedings of the 6th International Conference
on Computational Models of Argument (COMMA 2016).
-
Toward Argumentation-based Cyber Attribution
Eric Nunes, Paulo
Shakarian, and Gerardo I. Simari
Proceedings of the
AAAI-16 Workshop on Artificial Intelligence for Cyber Security (AICS 2016).
-
Belief Revision in Structured Probabilistic
Argumentation: Model and Application to Cyber Security
Paulo Shakarian,
Gerardo I. Simari, Geoffrey Moores, Damon Paulo,
Simon Parsons, Marcelo A. Falappa, and Ashkan Aleali
Annals of
Mathematics and Artificial Intelligence, 78(3–4), 259–301, 2016.
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Ranking Answers to Datalog+/- Ontologies based
on Trust and Reliability of Subjective Reports
Thomas Lukasiewicz, Maria Vanina Martinez, Cristian Molinaro,
Livia Predoiu, and Gerardo I. Simari
Computational Models
of Rationality, Essays dedicated to Gabriele Kern-Isberner
on the occasion of her 60th birthday. College Publications 2016: ISBN
978-1-84890-198-8, pp. 175–194.
~~~ 2015 ~~~
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Combining Existential Rules with the Power of
CP-Theories
Tommaso Di Noia,
Thomas Lukasiewicz, Maria
Vanina Martinez, Gerardo I. Simari, and Oana Tifrea-Marciuska
Proceedings of the
24th International Joint Conference on Artificial Intelligence (IJCAI 2015),
pp. 2918–2925.
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From Classical to Consistent Query Answering
under Existential Rules
Thomas Lukasiewicz,
Maria Vanina Martinez, Andreas Pieris, and Gerardo I. Simari
Proceedings of the
29th AAAI Conference on Artificial Intelligence (AAAI 2015), pp.
1546–1552.
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A Desiderata for Modeling and Reasoning with
Social Knowledge
Fabio R. Gallo,
Natalia Abad Santos, Gerardo I. Simari, and Marcelo A. Falappa
Proceedings of the
21st Argentine Conference on Computer Science (CACIC 2015).
-
Considering Fuzzy Valuations as Meta-level
Information in Arguments
Maximiliano C. D. Budan, Gerardo I. Simari, Ignacio Viglizzo,
and Guillermo R. Simari
Proceedings of the
3rd Workshop on Weighted Logics for Artificial Intelligence (WL4AI 2015, in
conjunction with IJCAI 2015), pp. 17–24.
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Preference-based Query Answering in Probabilistic
Datalog+/- Ontologies
Thomas Lukasiewicz, Maria Vanina Martinez, Gerardo I. Simari, and Oana
Tifrea-Marciuska
Journal on Data
Semantics, 4(2):81–101, 2015.
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Existential Rules and Bayesian Networks for
Probabilistic Ontological Data Exchange
Thomas Lukasiewicz, Maria Vanina Martinez, Livia Predoiu, and
Gerardo I. Simari
Proceedings of the
9th International Web Rule Symposium (RuleML 2015),
pp. 294–310.
Selected
by the RuleML Program Committee as the Best Paper.
-
Cyber Attribution: An Argumentation-Based
Approach
Paulo Shakarian,
Gerardo I. Simari, Geoffrey Moores, and Simon Parsons
Cyber Warfare:
Building the Scientific Foundation, Sushil Jajodia et al. (Eds.), 2015, pp.
151–171.
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Information Integration with Provenance on
the Semantic Web via Probabilistic Datalog+/-
Thomas Lukasiewicz, Maria Vanina Martinez, Livia Predoiu, and
Gerardo I. Simari
Department of
Computer Science, University of Oxford, Technical Report RR-15-01, January 2015.
~~~ 2014 ~~~
-
Probabilistic Preference Logic Networks
Thomas Lukasiewicz,
Maria Vanina Martinez, and Gerardo I. Simari
Proceedings of the 21st
European Conference on Artificial Intelligence (ECAI 2014), pp 561–566.
-
Ontology-based Query Answering with Group
Preferences
Thomas Lukasiewicz, Maria Vanina Martinez, Gerardo I. Simari, and Oana
Tifrea-Marciuska
ACM Transactions on
Internet Technology, 14(4):25, 2014
-
An Argumentation-based Framework to Address the
Attribution Problem in Cyber-Warfare
Paulo
Shakarian, Gerardo I. Simari, Geoffrey Moores, Simon
Parsons, and Marcelo A. Falappa
Proceedings of the
3rd ASE International Conference on Cyber Security (CyberSecurity
2014).
-
Answering Ontological Ranking Queries based on
Subjective Reports
Thomas Lukasiewicz, Maria Vanina Martinez, Cristian Molinaro,
Livia Predoiu, and Gerardo I. Simari
Proceedings of the
8th International Conference on Scalable Uncertainty Management (SUM 2014),
223–236.
-
A General Framework for
Inconsistency-Tolerant Query Answering in Datalog+/-
Thomas
Lukasiewicz, Maria Vanina Martinez, and Gerardo I. Simari
Department of
Computer Science, University of Oxford, Technical Report RR-14-04, May 2014.
-
Policy-based Inconsistency Management in
Relational Databases
Maria Vanina Martinez, Francesco
Parisi, Andrea Pugliese, Gerardo I. Simari, and V.S. Subrahmanian
International
Journal of Approximate Reasoning 55(2): 501–528.
-
Computing k-rank Answers with Ontological
CP-Nets
Tommaso Di
Noia, Thomas Lukasiewicz, Maria
Vanina Martinez, Gerardo I. Simari, and Oana Tifrea-Marciuska
Proceedings of the
22nd Italian Symposium on Advanced Database Systems (SEBD 2014).
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Answering Ontological Ranking Queries based on
Subjective Reports
Thomas Lukasiewicz, Maria Vanina Martinez, Cristian Molinaro,
Livia Predoiu, and Gerardo I. Simari
Proceedings of the
First Workshop on Logics for Reasoning about Preferences, Uncertainty, and
Vagueness (PRUV 2014), 127–140.
-
Computing k-rank Answers with Ontological
CP-Nets
Tommaso
Di Noia, Thomas Lukasiewicz, Maria
Vanina Martinez, Gerardo I. Simari, and Oana Tifrea-Marciuska
Proceedings of the
First Workshop on Logics for Reasoning about Preferences, Uncertainty, and
Vagueness (PRUV 2014), 74–87.
-
Belief Revision in Structured Probabilistic
Argumentation
Paulo
Shakarian, Gerardo I. Simari, and Marcelo A. Falappa
Proceedings of the
8th International Symposium on Foundations of Information and Knowledge Systems
(FoIKS 2014), pp. 324–343.
-
Stochastic Reasoning with Action Probabilistic
Logic Programs
Gerardo
I. Simari
AI Communications 27:157–159, 2014
-
Data-driven Algorithms for Policy Generation
Austin
Parker, Gerardo I. Simari, Amy Sliva, and V.S. Subrahmanian
SpringerBriefs in
Computer Science, ISBN 978-1-4939-0273-6.
~~~ 2013 ~~~
-
Top-k Query Answering in Datalog+/- Ontologies
under Subjective Reports (Technical Report)
Thomas Lukasiewicz, Maria Vanina Martinez, Cristian Molinaro,
Livia Predoiu, and Gerardo I. Simari
-
Preference-based Query Answering in Datalog+/-
Ontologies
Thomas
Lukasiewicz, Maria Vanina Martinez, and Gerardo I. Simari
Proceedings of the
23rd International Conference on Artificial Intelligence (IJCAI 2013), pp. 1017–1023.
-
Reasoning about Complex Networks: A Logic
Programming Approach
Paulo
Shakarian, Gerardo I. Simari, and Devon Callahan
Proceedings of the
29th International Conference on Logic Programming (ICLP 2013, Tech. Comm.), Theory and Practice of Logic
Programming, vol. 13:(4–5): Online Supplement, July 2013.
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Group Preferences for Query Answering in
Probabilistic Datalog+/- Ontologies
Thomas Lukasiewicz, Maria Vanina Martinez, Gerardo I. Simari, and Oana
Tifrea-Marciuska
Proceedings of the
2013 International Conference on Web Intelligence (WI 2013), pp. 171–178.
-
Preference-based Query Answering in
Probabilistic Datalog+/-
Thomas
Lukasiewicz, Maria Vanina Martinez, and Gerardo I. Simari
Proceedings of the
12th International Conference on Ontologies, Databases, and Applications of
Semantics (ODBASE 2013), LNCS
8185, pp. 488–500.
-
Complexity of Inconsistency-Tolerant Query
Answering in Datalog+/-
Thomas
Lukasiewicz, Maria Vanina Martinez, and Gerardo I. Simari
Proceedings of the
12th International Conference on Ontologies, Databases, and Applications of
Semantics (ODBASE 2013), LNCS
8185, pp. 501–518.
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Group Preferences for Query Answering in
Datalog+/- Ontologies
Thomas Lukasiewicz, Maria Vanina Martinez, Gerardo I. Simari, and Oana
Tifrea-Marciuska
Proceedings of the
7th International Conference on Scalable Uncertainty Management (SUM 2013), LNCS 8078, pp. 360–373.
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Reasoning with Semantic-Enabled Qualitative
Preferences
Tommaso
Di Noia, Thomas Lukasiewicz, and Gerardo I. Simari
Proceedings of the
7th International Conference on Scalable Uncertainty Management (SUM 2013), LNCS 8078, pp. 374–386.
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Preference-based Query Answering in Datalog+/-
Ontologies
Thomas
Lukasiewicz, Maria Vanina Martinez, and Gerardo I. Simari
Proceedings of the
26th International Workshop on Description Logics (DL 2013), CEUR vol. 1014, pp. 804–815.
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Complexity of Inconsistency-Tolerant Query
Answering in Datalog+/-
Thomas
Lukasiewicz, Maria Vanina Martinez, and Gerardo I. Simari
Proceedings of the
26th International Workshop on Description Logics (DL 2013), CEUR vol. 1014, pp. 791–803.
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Reasoning with DL-based CP-nets
Tommaso
Di Noia, Thomas Lukasiewicz, and Gerardo I. Simari
Proceedings of the
26th International Workshop on Description Logics (DL 2013), CEUR vol. 1014, pp. 640–651
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Query Answering in Datalog+/- Ontologies under
Group Preferences and Probabilistic Uncertainty
Thomas Lukasiewicz, Maria Vanina Martinez, Gerardo I. Simari, and Oana
Tifrea-Marciuska
Proceedings of the
2nd International Workshop on Data Management in the Social Semantic Web (DMSSW
2013), ICWE Workshops, pp. 192–206.
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Query Answering under Probabilistic Uncertainty
in Datalog+/- Ontologies
Georg Gottlob, Thomas Lukasiewicz, Maria Vanina Martinez, and
Gerardo I. Simari
Annals of Mathematics
and Artificial Intelligence 69(1):37–72, 2013.
-
MANCaLog: A Logic
for Multi-Attribute Network Cascades
Paulo
Shakarian, Gerardo I. Simari, and Robert Schroeder
Proceedings of the
12th International Conference on Autonomous Agents and Multiagent Systems
(AAMAS 2013), pp. 1175–1176.
A full version of
this paper can be found here.
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Parallel Abductive Query Answering in
Probabilistic Logic Programs
Gerardo
I. Simari, John P. Dickerson, Amy Sliva, and V.S. Subrahmanian
ACM Transactions on
Computational Logic 14(2), 2013.
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Policy Analytics Generation using Action
Probabilistic Logic Programs
Gerardo
I. Simari, John P. Dickerson, Amy Sliva, and V.S. Subrahmanian
Handbook of
Computational Approaches to Counter-Terrorism, Springer-Verlag 2013, ISBN
978-1-4614-5311-6, pp. 515–542.
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SOMA: Stochastic Opponent Modeling Agents for
Forecasting Violent Behavior
Amy
Sliva, Gerardo I. Simari, Maria Vanina Martinez, and V.S. Subrahmanian
Handbook of
Computational Approaches to Counter-Terrorism, Springer-Verlag 2013, ISBN
978-1-4614-5311-6, pp. 99–127.
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Tractable Probabilistic Description Logic
Programs
Thomas
Lukasiewicz and Gerardo I. Simari
Advances in
Probabilistic Databases for Uncertain Information Management. Studies in
Fuzziness and Soft Computing, Springer-Verlag 2013, vol. 304, ISBN
978-3-642-37508-8, pp. 131–159.
~~~ 2012 ~~~
-
Heuristic Ranking in Tightly Coupled
Probabilistic Description Logics
Thomas
Lukasiewicz, Maria Vanina Martinez, Giorgio Orsi, and
Gerardo I. Simari
Proceedings of the
26th Conference on Uncertainty in Artificial Intelligence (UAI 2012), pp.
554–563.
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Inconsistency Handling in Datalog+/- Ontologies
Thomas
Lukasiewicz, Maria Vanina Martinez, and Gerardo I. Simari
Proceedings of the
20th European Conference on Artificial Intelligence (ECAI 2012), pp.
558–563
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Consistent Answers in Probabilistic Datalog+/-
Ontologies
Thomas
Lukasiewicz, Maria Vanina Martinez, and Gerardo I. Simari
Proceedings of the
6th International Conference on Web Reasoning and Rule Systems (RR 2012), LNCS
vol. 7497, pp. 156–171.
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Inconsistency-Tolerant Query Rewriting for
Linear Datalog+/-
Thomas
Lukasiewicz, Maria Vanina Martinez, and Gerardo I. Simari
Proceedings of the
2nd Workshop on the Resurgence of Datalog in Academia and Industry (Datalog 2.0
2012), LNCS vol. 7494, pp. 123–134.
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Annotated Probabilistic Temporal Logic:
Approximate Fixpoint Implementation
Paulo
Shakarian, Gerardo I. Simari, and V.S. Subrahmanian
ACM Transactions on
Computational Logic 13(2):13, April 2012.
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Focused Most Probable World Computations in
Probabilistic Logic Programs
Gerardo
I. Simari, Maria Vanina Martinez, Amy Sliva, and V.S. Subrahmanian
Annals of
Mathematics and Artificial Intelligence 64(2-3): 113–143, May 2012.
~~~ 2011 ~~~
Gerardo I. Simari
and Simon D. Parsons
SpringerBriefs in
Computer Science Series, 1st Edition (2011), ISBN 978-1-4614-1471-1.
-
Conjunctive Query Answering in Probabilistic
Datalog+/- Ontologies
Georg Gottlob, Thomas Lukasiewicz, and Gerardo I. Simari
Proceedings of the 5th
International Conference on Web Reasoning and Rule Systems (RR 2011), LNCS
vol. 6902, pp. 77–92.
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Answering Threshold Queries in Probabilistic
Datalog+/- Ontologies
Georg Gottlob, Thomas Lukasiewicz, and Gerardo I. Simari
Proceedings of the 5th
International Conference on Scalable Uncertainy Management (SUM 2011), LNCS
vol. 6929, pp. 401–414.
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Approximate Achievability in Event Databases
Austin
Parker, Gerardo I. Simari, Amy Sliva, and V.S. Subrahmanian
Proceedings of the
11th European Conference on Symbolic and Quantitative Approaches to Reasoning
with Uncertainty (ECSQARU 2011), LNCS vol. 6717, pp. 737–748.
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Annotated Probabilistic Temporal Logic
Paulo
Shakarian, Austin Parker, Gerardo I. Simari, and V.S. Subrahmanian
ACM Transactions on
Computational Logic 12(2):14, January 2011.
~~~ 2010 ~~~
-
Cost-based Query Answering in Action
Probabilistic Logic Programs
Gerardo
I. Simari, John Dickerson, and V.S. Subrahmanian
Proceedings of the 4th
International Conference on Scalable Uncertainy Management (SUM 2010), LNCS
6379, pp. 319–332.
-
Efficient Policy-based Inconsistency Management
in Relational Databases
Maria Vanina Martinez, Francesco
Parisi, Andrea Pugliese, Gerardo I. Simari, and V.S. Subrahmanian
Proceedings of the 4th
International Conference on Scalable Uncertainy Management (SUM 2010), LNCS
6379, pp. 264–277.
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Abductive Inference in Probabilistic Logic
Programs
Gerardo I. Simari
and V.S. Subrahmanian
26th International
Conference on Logic Programming (ICLP 2010), Tech. Comm., LIPIcs
vol. 7, pp. 192–201.
-
A Graph-Theoretic Approach to Protect Static and
Moving Targets from Adversaries
John Dickerson, Gerardo I. Simari, Sarit Kraus, and V.S. Subrahmanian
Proceedings of the 9th
International Conference on Agents and Multiagent Systems (AAMAS 2010)
Toronto, Canada, May
10-14, 2010, pp. 299–306.
~~~ 2009 ~~~
-
Using Histograms to Better Answer Queries to
Probabilistic Logic Programs
Matthias Broecheler, Gerardo I. Simari, and V.S. Subrahmanian
25th International
Conference on Logic Programming (ICLP 2009), LNCS vol. 5649, pp. 40–54.
Selected by the ICLP 2009 Program Committee as the
Best Student Paper.
-
Aggregate Query Answering under Uncertain Schema
Mappings
Avigdor Gal,
Maria Vanina Martinez, Gerardo I. Simari, and V.S. Subrahmanian
Proceedings of the 25th International Conference on
Data Engineering (ICDE 2009), pp. 940–951.
-
CAPE: Automatically Predicting Changes in Group
Behavior
Amy Sliva,
V.S. Subrahmanian, Maria Vanina Martinez, and Gerardo I. Simari
Mathematical Methods in Counterterrorism, N. Memon,
J. D. Early, D. L. Hicks, and T. Rosenorn (Eds.) Springer-Verlag, 2009, pp. 247–263.
~~~ 2008 ~~~
-
Scaling Most Probable World Computations in
Probabilistic Logic Programs
Gerardo I.
Simari, Maria Vanina Martinez, Amy Sliva, and V.S. Subrahmanian
Proceedings of the 2nd International Conference on
Scalable Uncertainy Management (SUM 2008), LNCS vol. 5291, pp. 372–385.
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Promises Kept, Promises Broken: An Axiomatic and
Quantitative Treatment of Fulfillment
Gerardo I.
Simari, Matthias Broecheler, Sarit Kraus, and V.S. Subrahmanian
Proceedings of the 11th International Conference on
Knowledge Representation and Reasoning (KR 2008), pp. 56–69.
-
Inconsistency Management Policies
Maria Vanina
Martinez, Francesco Parisi, Andrea Pugliese, Gerardo I. Simari, and
V.S. Subrahmanian
Proceedings of the 11th International Conference on
Knowledge Representation and Reasoning (KR 2008), pp. 367–377.
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CONVEX: Similarity-based Algorithms for
Forecasting Group Behavior
Vanina Martinez, Gerardo
I. Simari, Amy Sliva, and V.S. Subrahmanian
IEEE Intelligent
Systems, vol. 23, no. 4, pp. 51–57, Jul/Aug 2008.
-
The SOMA Terror Organization Portal (STOP):
Social Network and Analytic Tools for the Real-time Analysis of Terror Groups
Vanina Martinez,
Gerardo Simari, Amy Sliva, and V.S. Subrahmanian
Proceedings of the
First International Workshop on Social Computing, Behavioral Modeling, and
Prediction, pp. 9–18.
~~~ 2007 ~~~
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Computing Most
Probable Worlds of Action Probabilistic Logic Programs: Scalable Estimation for
10^30,000 Worlds
Samir Khuller, Maria
Vanina Martinez, Dana Nau, Gerardo Simari, Amy Sliva, and
V.S. Subrahmanian
Annals of
Mathematics and Artificial Intelligence, vol. 51, no. 2-4, pp. 295–331,
December 2007.
-
Finding Most Probable Worlds of Probabilistic
Logic Programs
Samir Khuller, Maria
Vanina Martinez, Dana Nau, Gerardo Simari, Amy Sliva, and
V.S. Subrahmanian
Proceedings of the
First International Conference on Scalable Uncertainty Management (SUM
2007), LNCS vol. 4772, pp. 45–59, ISBN: 978-3-540-75407-7.
-
How Dirty is your Relational Database? An
Axiomatic Approach
Maria Vanina Martinez, Andrea Pugliese, Gerardo I.
Simari, V.S. Subrahmanian, and Henri Prade
Proceedings of the Ninth European Conference on
Symbolic and Quantitative Approaches to Reasoning with Uncertainty (ECSQARU
2007), LNCS vol. 4724, pp. 103–114, ISBN: 978-3-540-75255-4.
-
SOMA Models of the Behaviors of Stakeholders in
the Afghan Drug Economy: A Preliminary Report
Amy Sliva, Maria Vanina Martinez, Gerardo I.
Simari, and V.S. Subrahmanian
Proceedings of the First International
Conference on Computational Cultural Dynamics (ICCCD 2007), pp.
78–86, AAAI Press, ISBN: 978-1-57735-342-3.
-
CARA: A Cultural Adversarial Reasoning
Architecture
V. S. Subrahmanian,
Massimiliano Albanese, Maria Vanina Martinez, Dana Nau, Diego Recupero,
Gerardo I. Simari,
Amy Sliva, Octavian Udrea, and Jonathan Wilkenfeld
IEEE Intelligent
Systems, vol. 22, no. 2, pp 12-16, Mar/Apr 2007.
~~~ 2006 ~~~
-
A GPS-Based On-Demand Shuttle Bus System
Maria Vanina Martinez, Gerardo I. Simari, Carlos D. Castillo, and Nir Peer
Technical Report - Department of Computer Science, University of
Maryland College Park, Dec. 2006.
-
A Stochastic Language for Modeling Opponent
Agents
Gerardo I. Simari,
Amy Sliva, V.S. Subrahmanian, and Dana Nau
Fifth International Joint Conference on Autonomous
Agents and Multi-agent Systems (AAMAS 2006), pp. 244–246.
-
On the Relationship between MDPs and the BDI Architecture
Gerardo
I. Simari and Simon D. Parsons
Fifth International Joint Conference on Autonomous
Agents and Multi-agent Systems (AAMAS 2006), pp. 1041–1048.
~~~ 2004 ~~~
-
Rational
Decision Making in Autonomous Agents (Master’s Thesis)
Gerardo I. Simari
Department of Computer Science and Engineering, Universidad Nacional del
Sur, Bahia Blanca, Argentina (2004)
Thesis Advisors: Simon D. Parsons and Marcelo A. Falappa
Thesis Referees: Milind
Tambe and Martijn Schut
-
On
Approximating the Best Decision for an Autonomous Agent
Gerardo
I. Simari and Simon D. Parsons
Sixth Workshop on Game Theoretic and Decision
Theoretic Agents (GTDT 2004) @ AAMAS 2004, pp. 91–100.
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Designing an Agent System for Controlling a
Robotic Soccer Team
Alejandro
J. Garcia, Gerardo I. Simari, and Telma Delladio
X Argentine Conference on Computer Science
(CACIC 2004), La Matanza, Buenos Aires, Argentina.
-
Non Prioritized Answer
Set Revision
Gerardo I. Simari and Marcelo A. Falappa
X Argentine Conference on Computer Science
(CACIC 2004), La Matanza, Buenos
Aires, Argentina.
-
Cognitive
Robotics in a Soccer Game Domain: A Proposal for the E-League
Competition
Alejandro
J. Garcia, Gerardo I. Simari, Telma Delladio, Diego Garcia, Mariano Tucat, Nicolas D. Rotstein,
Fernando A. Martin, and Sebastian Gottifredi
VI
Workshop of Researchers in Computer Science (WICC 2004)
Universidad
Nacional del Comahue, Neuquen, Provincia de Neuquen, Argentina.
-
Rational
Decision Making in Autonomous Agents
Gerardo
I. Simari and Simon D. Parsons
VI
Workshop of Researchers in Computer Science (WICC 2004)
Universidad
Nacional del Comahue, Neuquen, Provincia de Nequen, Argentina.
-
Non Prioritized Belief Revision with AnsProlog*
Gerardo I.
Simari and Marcelo A. Falappa
VI
Workshop of Researchers in Computer Science (WICC 2004)
Universidad
Nacional del Comahue, Neuquen, Provincia de Neuquen, Argentina.
~~~ 2003 ~~~
-
On
the Problem of Comparing Two Models for Rational Decision Making in
Autonomous Agents
Simon D.
Parsons and Gerardo I. Simari
IX
Argentine Conference on Computer Science (CACIC 2003)
Universidad
Nacional de La Plata, La Plata, Provincia de Buenos Aires, Argentina.
-
Belief
Dynamics and Explanations in AnsProlog*
Gerardo I.
Simari and Marcelo A. Falappa
IX
Argentine Conference on Computer Science (CACIC 2003)
Universidad
Nacional de La Plata, La Plata, Provincia de Buenos Aires, Argentina.
-
The
Monkey and Bananas Problem Revisited: A Situation Calculus Approach
Gerardo I.
Simari, Diego R. Garcia, and Gabriel R. Filocamo
IX
Argentine Conference on Computer Science (CACIC 2003)
Universidad
Nacional de La Plata, La Plata, Provincia de Buenos Aires, Argentina.
-
A
General Approach to the Implementation of Action Theories
Gerardo I.
Simari, Diego R. Garcia, and Gabriel R. Filocamo
V
Workshop of Researchers in Computer Science (WICC 2003)
Universidad
Nacional del Centro, Tandil, Provincia de Buenos Aires, Argentina.
-
Non Prioritized Reasoning in Intelligent Agents
Marcelo A.
Falappa and Gerardo I. Simari
V
Workshop of Researchers in Computer Science (WICC 2003)
Universidad
Nacional del Centro, Tandil, Provincia de Buenos Aires, Argentina.
~~~ 2002 ~~~
-
A Primer
on Zero Knowledge Protocols
Gerardo
I. Simari
Technical Report -
Universidad Nacional del Sur, Bahia Blanca, Buenos
Aires, Argentina, 2002.
Other Links
-
Guillermo Ricardo Simari - Home Page
-
Patricio Dario Simari - Home Page
-
Maria Vanina Martinez - Home Page
-
Paulo Shakarian - Google Scholar
-
Department
of Computer Science, University of Oxford
-
Department of Computer Science, University of
Maryland College Park
-
University
of Maryland Institute for Advanced computer Studies (UMIACS)
-
Laboratory for Computational Cultural
Dynamics (LCCD)
-
RoboCup 2004 ELeague Team (MateBots Home Page)
-
Society
for Imprecise Probability: Theories and Applications (SIPTA)
-
Touristic
information about Bahia Blanca, Buenos Aires, and Argentina in general
|
Address: Departamento de Ciencias e Ingeniería de
la Computación, Universidad Nacional del Sur San Andres 800 (Campus
Palihue) (8000) Bahía Blanca ARGENTINA |
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Phone: ++ 54 (0) 291 459
5135 |
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