Search Results for author: Gerardo I. Simari

Found 10 papers, 0 papers with code

Extensions to Generalized Annotated Logic and an Equivalent Neural Architecture

no code implementations23 Feb 2023 Paulo Shakarian, Gerardo I. Simari

While deep neural networks have led to major advances in image recognition, language translation, data mining, and game playing, there are well-known limits to the paradigm such as lack of explainability, difficulty of incorporating prior knowledge, and modularity.

Reasoning about Complex Networks: A Logic Programming Approach

no code implementations29 Sep 2022 Paulo Shakarian, Gerardo I. Simari, Devon Callahan

Reasoning about complex networks has in recent years become an important topic of study due to its many applications: the adoption of commercial products, spread of disease, the diffusion of an idea, etc.

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On the Importance of Domain-specific Explanations in AI-based Cybersecurity Systems (Technical Report)

no code implementations2 Aug 2021 Jose N. Paredes, Juan Carlos L. Teze, Gerardo I. Simari, Maria Vanina Martinez

With the availability of large datasets and ever-increasing computing power, there has been a growing use of data-driven artificial intelligence systems, which have shown their potential for successful application in diverse areas.

Explainable artificial intelligence Explainable Artificial Intelligence (XAI)

An Approach to Characterize Graded Entailment of Arguments through a Label-based Framework

no code implementations5 Mar 2019 Maximiliano C. D. Budán, Gerardo I. Simari, Ignacio Viglizzo, Guillermo R. Simari

A classical argumentation process takes into account only the properties related to the intrinsic logical soundness of an argument in order to determine its acceptability status.

DARKMENTION: A Deployed System to Predict Enterprise-Targeted External Cyberattacks

no code implementations30 Oct 2018 Mohammed Almukaynizi, Ericsson Marin, Eric Nunes, Paulo Shakarian, Gerardo I. Simari, Dipsy Kapoor, Timothy Siedlecki

In particular, we show that it outperforms baseline systems that attempt to generate warnings of cyber attacks related to two enterprises with an average increase in F1 score of about 45% and 57%.

Argumentation Models for Cyber Attribution

no code implementations7 Jul 2016 Eric Nunes, Paulo Shakarian, Gerardo I. Simari, Andrew Ruef

A major challenge in cyber-threat analysis is combining information from different sources to find the person or the group responsible for the cyber-attack.

An Argumentation-Based Framework to Address the Attribution Problem in Cyber-Warfare

no code implementations27 Apr 2014 Paulo Shakarian, Gerardo I. Simari, Geoffrey Moores, Simon Parsons, Marcelo A. Falappa

Attributing a cyber-operation through the use of multiple pieces of technical evidence (i. e., malware reverse-engineering and source tracking) and conventional intelligence sources (i. e., human or signals intelligence) is a difficult problem not only due to the effort required to obtain evidence, but the ease with which an adversary can plant false evidence.

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Belief Revision in Structured Probabilistic Argumentation

no code implementations7 Jan 2014 Paulo Shakarian, Gerardo I. Simari, Marcelo A. Falappa

In real-world applications, knowledge bases consisting of all the information at hand for a specific domain, along with the current state of affairs, are bound to contain contradictory data coming from different sources, as well as data with varying degrees of uncertainty attached.

Top-k Query Answering in Datalog+/- Ontologies under Subjective Reports (Technical Report)

no code implementations29 Nov 2013 Thomas Lukasiewicz, Maria Vanina Martinez, Cristian Molinaro, Livia Predoiu, Gerardo I. Simari

Theses pieces of information of every report are then combined, along with the querying user's preferences and his/her trust into each report, to rank the query results.

MANCaLog: A Logic for Multi-Attribute Network Cascades (Technical Report)

no code implementations2 Jan 2013 Paulo Shakarian, Gerardo I. Simari, Robert Schroeder

The modeling of cascade processes in multi-agent systems in the form of complex networks has in recent years become an important topic of study due to its many applications: the adoption of commercial products, spread of disease, the diffusion of an idea, etc.

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