Search Results for author: Fabio Massimo Zennaro

Found 19 papers, 11 papers with code

Interventionally Consistent Surrogates for Agent-based Simulators

no code implementations18 Dec 2023 Joel Dyer, Nicholas Bishop, Yorgos Felekis, Fabio Massimo Zennaro, Anisoara Calinescu, Theodoros Damoulas, Michael Wooldridge

Agent-based simulators provide granular representations of complex intelligent systems by directly modelling the interactions of the system's constituent agents.

Causal Optimal Transport of Abstractions

1 code implementation13 Dec 2023 Yorgos Felekis, Fabio Massimo Zennaro, Nicola Branchini, Theodoros Damoulas

Causal abstraction (CA) theory establishes formal criteria for relating multiple structural causal models (SCMs) at different levels of granularity by defining maps between them.

Data Augmentation

Quantifying Consistency and Information Loss for Causal Abstraction Learning

1 code implementation7 May 2023 Fabio Massimo Zennaro, Paolo Turrini, Theodoros Damoulas

However, switching between different levels of abstraction requires evaluating a trade-off between the consistency and the information loss among different models.

Jointly Learning Consistent Causal Abstractions Over Multiple Interventional Distributions

1 code implementation14 Jan 2023 Fabio Massimo Zennaro, Máté Drávucz, Geanina Apachitei, W. Dhammika Widanage, Theodoros Damoulas

An abstraction can be used to relate two structural causal models representing the same system at different levels of resolution.

Towards Computing an Optimal Abstraction for Structural Causal Models

1 code implementation1 Aug 2022 Fabio Massimo Zennaro, Paolo Turrini, Theodoros Damoulas

Working with causal models at different levels of abstraction is an important feature of science.

Abstraction between Structural Causal Models: A Review of Definitions and Properties

no code implementations18 Jul 2022 Fabio Massimo Zennaro

Structural causal models (SCMs) are a widespread formalism to deal with causal systems.

Stack-based Buffer Overflow Detection using Recurrent Neural Networks

1 code implementation30 Dec 2020 William Arild Dahl, Laszlo Erdodi, Fabio Massimo Zennaro

Moreover, we subscribe to the hypothesis that code may be treated as natural language, and thus we process assembly code using standard architectures commonly employed in natural language processing.

Vulnerability Detection

Firearm Detection via Convolutional Neural Networks: Comparing a Semantic Segmentation Model Against End-to-End Solutions

no code implementations17 Dec 2020 Alexander Egiazarov, Fabio Massimo Zennaro, Vasileios Mavroeidis

Threat detection of weapons and aggressive behavior from live video can be used for rapid detection and prevention of potentially deadly incidents such as terrorism, general criminal offences, or even domestic violence.

Segmentation Semantic Segmentation

Using Subjective Logic to Estimate Uncertainty in Multi-Armed Bandit Problems

1 code implementation17 Aug 2020 Fabio Massimo Zennaro, Audun Jøsang

The multi-armed bandit problem is a classical decision-making problem where an agent has to learn an optimal action balancing exploration and exploitation.

Decision Making Multi-Armed Bandits

Modeling Penetration Testing with Reinforcement Learning Using Capture-the-Flag Challenges: Trade-offs between Model-free Learning and A Priori Knowledge

1 code implementation26 May 2020 Fabio Massimo Zennaro, Laszlo Erdodi

In this paper, we focus our attention on simplified penetration testing problems expressed in the form of capture the flag hacking challenges, and we analyze how model-free reinforcement learning algorithms may help to solve them.

Q-Learning reinforcement-learning +1

Firearm Detection and Segmentation Using an Ensemble of Semantic Neural Networks

no code implementations11 Feb 2020 Alexander Egiazarov, Vasileios Mavroeidis, Fabio Massimo Zennaro, Kamer Vishi

In this paper, we present a weapon detection system based on an ensemble of semantic Convolutional Neural Networks that decomposes the problem of detecting and locating a weapon into a set of smaller problems concerned with the individual component parts of a weapon.

Towards Further Understanding of Sparse Filtering via Information Bottleneck

1 code implementation20 Oct 2019 Fabio Massimo Zennaro, Ke Chen

In this paper we examine a formalization of feature distribution learning (FDL) in information-theoretic terms relying on the analytical approach and on the tools already used in the study of the information bottleneck (IB).

Counterfactually Fair Prediction Using Multiple Causal Models

1 code implementation1 Oct 2018 Fabio Massimo Zennaro, Magdalena Ivanovska

In this paper we study the problem of making predictions using multiple structural casual models defined by different agents, under the constraint that the prediction satisfies the criterion of counterfactual fairness.

counterfactual Fairness

Pooling of Causal Models under Counterfactual Fairness via Causal Judgement Aggregation

no code implementations24 May 2018 Fabio Massimo Zennaro, Magdalena Ivanovska

In this paper we consider the problem of combining multiple probabilistic causal models, provided by different experts, under the requirement that the aggregated model satisfy the criterion of counterfactual fairness.

BIG-bench Machine Learning Causal Judgment +2

On the Use of Sparse Filtering for Covariate Shift Adaptation

1 code implementation22 Jul 2016 Fabio Massimo Zennaro, Ke Chen

We provide a theoretical analysis of sparse filtering by evaluating the conditions required to perform covariate shift adaptation.

Towards Understanding Sparse Filtering: A Theoretical Perspective

no code implementations29 Mar 2016 Fabio Massimo Zennaro, Ke Chen

In this paper we present a theoretical analysis to understand sparse filtering, a recent and effective algorithm for unsupervised learning.

Cannot find the paper you are looking for? You can Submit a new open access paper.