Search Results for author: Marco Gori

Found 60 papers, 11 papers with code

Clue-Instruct: Text-Based Clue Generation for Educational Crossword Puzzles

no code implementations9 Apr 2024 Andrea Zugarini, Kamyar Zeinalipour, Surya Sai Kadali, Marco Maggini, Marco Gori, Leonardo Rigutini

By gathering from Wikipedia pages informative content associated with relevant keywords, we use Large Language Models to automatically generate pedagogical clues related to the given input keyword and its context.

Multitask Kernel-based Learning with Logic Constraints

no code implementations16 Feb 2024 Michelangelo Diligenti, Marco Gori, Marco Maggini, Leonardo Rigutini

This paper presents a general framework to integrate prior knowledge in the form of logic constraints among a set of task functions into kernel machines.

Multi-Task Learning

On the Resurgence of Recurrent Models for Long Sequences -- Survey and Research Opportunities in the Transformer Era

no code implementations12 Feb 2024 Matteo Tiezzi, Michele Casoni, Alessandro Betti, Tommaso Guidi, Marco Gori, Stefano Melacci

A longstanding challenge for the Machine Learning community is the one of developing models that are capable of processing and learning from very long sequences of data.

Nature-Inspired Local Propagation

no code implementations4 Feb 2024 Alessandro Betti, Marco Gori

The spectacular results achieved in machine learning, including the recent advances in generative AI, rely on large data collections.

Neural Time-Reversed Generalized Riccati Equation

no code implementations14 Dec 2023 Alessandro Betti, Michele Casoni, Marco Gori, Simone Marullo, Stefano Melacci, Matteo Tiezzi

This paper introduces a novel neural-based approach to optimal control, with the aim of working forward-in-time.

The WebCrow French Crossword Solver

no code implementations27 Nov 2023 Giovanni Angelini, Marco Ernandes, Tommaso laquinta, Caroline Stehlé, Fanny Simões, Kamyar Zeinalipour, Andrea Zugarini, Marco Gori

Crossword puzzles are one of the most popular word games, played in different languages all across the world, where riddle style can vary significantly from one country to another.

Knowledge Graphs

Italian Crossword Generator: Enhancing Education through Interactive Word Puzzles

no code implementations27 Nov 2023 Kamyar Zeinalipour, Tommaso laquinta, Asya Zanollo, Giovanni Angelini, Leonardo Rigutini, Marco Maggini, Marco Gori

On the other hand, for generating crossword clues from a given text, Zero/Few-shot learning techniques were used to extract clues from the input text, adding variety and creativity to the puzzles.

Few-Shot Learning Zero-Shot Learning

Multitask Kernel-based Learning with First-Order Logic Constraints

no code implementations6 Nov 2023 Michelangelo Diligenti, Marco Gori, Marco Maggini, Leonardo Rigutini

In this paper we propose a general framework to integrate supervised and unsupervised examples with background knowledge expressed by a collection of first-order logic clauses into kernel machines.

Multi-Task Learning

Graph Neural Networks for Topological Feature Extraction in ECG Classification

no code implementations2 Nov 2023 Kamyar Zeinalipour, Marco Gori

While ECG situations have numerous similarities, little attention has been paid to categorizing ECGs using graph neural networks.

ECG Classification

Collectionless Artificial Intelligence

no code implementations13 Sep 2023 Marco Gori, Stefano Melacci

By and large, the professional handling of huge data collections is regarded as a fundamental ingredient of the progress of machine learning and of its spectacular results in related disciplines, with a growing agreement on risks connected to the centralization of such data collections.

Memorization Position

Continual Learning with Pretrained Backbones by Tuning in the Input Space

no code implementations5 Jun 2023 Simone Marullo, Matteo Tiezzi, Marco Gori, Stefano Melacci, Tinne Tuytelaars

The intrinsic difficulty in adapting deep learning models to non-stationary environments limits the applicability of neural networks to real-world tasks.

Continual Learning Image Classification

PARTIME: Scalable and Parallel Processing Over Time with Deep Neural Networks

1 code implementation17 Oct 2022 Enrico Meloni, Lapo Faggi, Simone Marullo, Alessandro Betti, Matteo Tiezzi, Marco Gori, Stefano Melacci

nature of the streamed data with samples that are smoothly evolving over time for efficient gradient computations.

Learning to Identify Drilling Defects in Turbine Blades with Single Stage Detectors

no code implementations8 Aug 2022 Andrea Panizza, Szymon Tomasz Stefanek, Stefano Melacci, Giacomo Veneri, Marco Gori

The application is challenging due to the large image resolutions in which defects are very small and hardly captured by the commonly used anchor sizes, and also due to the small size of the available dataset.

Data Augmentation object-detection +1

Deep Learning to See: Towards New Foundations of Computer Vision

no code implementations30 Jun 2022 Alessandro Betti, Marco Gori, Stefano Melacci

The remarkable progress in computer vision over the last few years is, by and large, attributed to deep learning, fueled by the availability of huge sets of labeled data, and paired with the explosive growth of the GPU paradigm.

BIG-bench Machine Learning

Knowledge-driven Active Learning

1 code implementation15 Oct 2021 Gabriele Ciravegna, Frédéric Precioso, Alessandro Betti, Kevin Mottin, Marco Gori

The deployment of Deep Learning (DL) models is still precluded in those contexts where the amount of supervised data is limited.

Active Learning Multi-Label Classification +2

Logic Constraints to Feature Importances

no code implementations13 Oct 2021 Nicola Picchiotti, Marco Gori

In recent years, Artificial Intelligence (AI) algorithms have been proven to outperform traditional statistical methods in terms of predictivity, especially when a large amount of data was available.

Fairness Feature Importance

Clustering-Based Interpretation of Deep ReLU Network

1 code implementation13 Oct 2021 Nicola Picchiotti, Marco Gori

Amongst others, the adoption of Rectified Linear Units (ReLUs) is regarded as one of the ingredients of the success of deep learning.

Clustering Feature Importance

Can machines learn to see without visual databases?

no code implementations12 Oct 2021 Alessandro Betti, Marco Gori, Stefano Melacci, Marcello Pelillo, Fabio Roli

This paper sustains the position that the time has come for thinking of learning machines that conquer visual skills in a truly human-like context, where a few human-like object supervisions are given by vocal interactions and pointing aids only.

Position

Graph Neural Networks for Graph Drawing

no code implementations21 Sep 2021 Matteo Tiezzi, Gabriele Ciravegna, Marco Gori

Graph Drawing techniques have been developed in the last few years with the purpose of producing aesthetically pleasing node-link layouts.

Messing Up 3D Virtual Environments: Transferable Adversarial 3D Objects

1 code implementation17 Sep 2021 Enrico Meloni, Matteo Tiezzi, Luca Pasqualini, Marco Gori, Stefano Melacci

In the last few years, the scientific community showed a remarkable and increasing interest towards 3D Virtual Environments, training and testing Machine Learning-based models in realistic virtual worlds.

Benchmarking BIG-bench Machine Learning

Logic Explained Networks

1 code implementation11 Aug 2021 Gabriele Ciravegna, Pietro Barbiero, Francesco Giannini, Marco Gori, Pietro Lió, Marco Maggini, Stefano Melacci

The language used to communicate the explanations must be formal enough to be implementable in a machine and friendly enough to be understandable by a wide audience.

Explainable artificial intelligence

Friendly Training: Neural Networks Can Adapt Data To Make Learning Easier

no code implementations21 Jun 2021 Simone Marullo, Matteo Tiezzi, Marco Gori, Stefano Melacci

In the last decade, motivated by the success of Deep Learning, the scientific community proposed several approaches to make the learning procedure of Neural Networks more effective.

Entropy-based Logic Explanations of Neural Networks

3 code implementations12 Jun 2021 Pietro Barbiero, Gabriele Ciravegna, Francesco Giannini, Pietro Lió, Marco Gori, Stefano Melacci

Explainable artificial intelligence has rapidly emerged since lawmakers have started requiring interpretable models for safety-critical domains.

Explainable artificial intelligence Image Classification

An Optimal Control Approach to Learning in SIDARTHE Epidemic model

1 code implementation28 Oct 2020 Andrea Zugarini, Enrico Meloni, Alessandro Betti, Andrea Panizza, Marco Corneli, Marco Gori

We formulate the problem in terms of a functional risk that depends on the learning variables through the solutions of a dynamic system.

Gravitational Models Explain Shifts on Human Visual Attention

no code implementations15 Sep 2020 Dario Zanca, Marco Gori, Stefano Melacci, Alessandra Rufa

Another where the information from these maps is merged in order to select a single location to be attended for further and more complex computations and reasoning.

Developing Constrained Neural Units Over Time

no code implementations1 Sep 2020 Alessandro Betti, Marco Gori, Simone Marullo, Stefano Melacci

In this paper we present a foundational study on a constrained method that defines learning problems with Neural Networks in the context of the principle of least cognitive action, which very much resembles the principle of least action in mechanics.

SAILenv: Learning in Virtual Visual Environments Made Simple

1 code implementation16 Jul 2020 Enrico Meloni, Luca Pasqualini, Matteo Tiezzi, Marco Gori, Stefano Melacci

Recently, researchers in Machine Learning algorithms, Computer Vision scientists, engineers and others, showed a growing interest in 3D simulators as a mean to artificially create experimental settings that are very close to those in the real world.

Optical Flow Estimation

Wave Propagation of Visual Stimuli in Focus of Attention

no code implementations19 Jun 2020 Lapo Faggi, Alessandro Betti, Dario Zanca, Stefano Melacci, Marco Gori

Fast reactions to changes in the surrounding visual environment require efficient attention mechanisms to reallocate computational resources to most relevant locations in the visual field.

Scanpath prediction

Focus of Attention Improves Information Transfer in Visual Features

no code implementations NeurIPS 2020 Matteo Tiezzi, Stefano Melacci, Alessandro Betti, Marco Maggini, Marco Gori

In order to better structure the input probability distribution, we use a human-like focus of attention model that, coherently with the information maximization model, is also based on second-order differential equations.

Domain Knowledge Alleviates Adversarial Attacks in Multi-Label Classifiers

no code implementations6 Jun 2020 Stefano Melacci, Gabriele Ciravegna, Angelo Sotgiu, Ambra Demontis, Battista Biggio, Marco Gori, Fabio Roli

Adversarial attacks on machine learning-based classifiers, along with defense mechanisms, have been widely studied in the context of single-label classification problems.

Multi-Label Classification

Local Propagation in Constraint-based Neural Network

no code implementations18 Feb 2020 Giuseppe Marra, Matteo Tiezzi, Stefano Melacci, Alessandro Betti, Marco Maggini, Marco Gori

In this paper we study a constraint-based representation of neural network architectures.

A Lagrangian Approach to Information Propagation in Graph Neural Networks

1 code implementation18 Feb 2020 Matteo Tiezzi, Giuseppe Marra, Stefano Melacci, Marco Maggini, Marco Gori

GNNs exploit a set of state variables, each assigned to a graph node, and a diffusion mechanism of the states among neighbor nodes, to implement an iterative procedure to compute the fixed point of the (learnable) state transition function.

Toward Improving the Evaluation of Visual Attention Models: a Crowdsourcing Approach

no code implementations11 Feb 2020 Dario Zanca, Stefano Melacci, Marco Gori

A computational modeling of this phenomenon must take into account where people look in order to evaluate which are the salient locations (spatial distribution of the fixations), when they look in those locations to understand the temporal development of the exploration (temporal order of the fixations), and how they move from one location to another with respect to the dynamics of the scene and the mechanics of the eyes (dynamics).

Saliency Prediction

Relational Neural Machines

no code implementations6 Feb 2020 Giuseppe Marra, Michelangelo Diligenti, Francesco Giannini, Marco Gori, Marco Maggini

Deep learning has been shown to achieve impressive results in several tasks where a large amount of training data is available.

Backprop Diffusion is Biologically Plausible

no code implementations10 Dec 2019 Alessandro Betti, Marco Gori

The Backpropagation algorithm relies on the abstraction of using a neural model that gets rid of the notion of time, since the input is mapped instantaneously to the output.

Discrete and Continuous Deep Residual Learning Over Graphs

no code implementations21 Nov 2019 Pedro H. C. Avelar, Anderson R. Tavares, Marco Gori, Luis C. Lamb

In this paper we propose the use of continuous residual modules for graph kernels in Graph Neural Networks.

Jointly Learning to Detect Emotions and Predict Facebook Reactions

no code implementations24 Sep 2019 Lisa Graziani, Stefano Melacci, Marco Gori

In this paper we focus on Facebook posts paired with reactions of multiple users, and we investigate their relationships with classes of emotions that are typically considered in the task of emotion detection.

Emotion Classification

Learning Visual Features Under Motion Invariance

no code implementations1 Sep 2019 Alessandro Betti, Marco Gori, Stefano Melacci

Humans are continuously exposed to a stream of visual data with a natural temporal structure.

T-Norms Driven Loss Functions for Machine Learning

no code implementations26 Jul 2019 Giuseppe Marra, Francesco Giannini, Michelangelo Diligenti, Marco Maggini, Marco Gori

Neural-symbolic approaches have recently gained popularity to inject prior knowledge into a learner without requiring it to induce this knowledge from data.

BIG-bench Machine Learning General Knowledge

On the relation between Loss Functions and T-Norms

no code implementations18 Jul 2019 Francesco Giannini, Giuseppe Marra, Michelangelo Diligenti, Marco Maggini, Marco Gori

Deep learning has been shown to achieve impressive results in several domains like computer vision and natural language processing.

Relation

On the Role of Time in Learning

no code implementations14 Jul 2019 Alessandro Betti, Marco Gori

By and large the process of learning concepts that are embedded in time is regarded as quite a mature research topic.

Spatiotemporal Local Propagation

no code implementations11 Jul 2019 Alessandro Betti, Marco Gori

This paper proposes an in-depth re-thinking of neural computation that parallels apparently unrelated laws of physics, that are formulated in the variational framework of the least action principle.

Least Action Principles and Well-Posed Learning Problems

no code implementations4 Jul 2019 Alessandro Betti, Marco Gori

Machine Learning algorithms are typically regarded as appropriate optimization schemes for minimizing risk functions that are constructed on the training set, which conveys statistical flavor to the corresponding learning problem.

Neural-Symbolic Computing: An Effective Methodology for Principled Integration of Machine Learning and Reasoning

no code implementations15 May 2019 Artur d'Avila Garcez, Marco Gori, Luis C. Lamb, Luciano Serafini, Michael Spranger, Son N. Tran

In spite of the recent impact of AI, several works have identified the need for principled knowledge representation and reasoning mechanisms integrated with deep learning-based systems to provide sound and explainable models for such systems.

BIG-bench Machine Learning Explainable Models

LYRICS: a General Interface Layer to Integrate Logic Inference and Deep Learning

no code implementations18 Mar 2019 Giuseppe Marra, Francesco Giannini, Michelangelo Diligenti, Marco Gori

In spite of the amazing results obtained by deep learning in many applications, a real intelligent behavior of an agent acting in a complex environment is likely to require some kind of higher-level symbolic inference.

Typed Graph Networks

2 code implementations23 Jan 2019 Marcelo O. R. Prates, Pedro H. C. Avelar, Henrique Lemos, Marco Gori, Luis Lamb

To illustrate the generality of the original model, we present a Graph Neural Network formalisation, which partitions the vertices of a graph into a number of types.

Integrating Learning and Reasoning with Deep Logic Models

no code implementations14 Jan 2019 Giuseppe Marra, Francesco Giannini, Michelangelo Diligenti, Marco Gori

Deep learning is very effective at jointly learning feature representations and classification models, especially when dealing with high dimensional input patterns.

Cognitive Action Laws: The Case of Visual Features

no code implementations28 Aug 2018 Alessandro Betti, Marco Gori, Stefano Melacci

A special choice of the functional index, which leads to forth-order differential equations---Cognitive Action Laws (CAL)---exhibits a structure that mirrors classic formulation of machine learning.

BIG-bench Machine Learning

Backpropagation and Biological Plausibility

no code implementations21 Aug 2018 Alessandro Betti, Marco Gori, Giuseppe Marra

This might open the doors to a truly novel class of learning algorithms where, because of the introduction of the notion of support neurons, the optimization scheme also plays a fundamental role in the construction of the architecture.

Learning Neuron Non-Linearities with Kernel-Based Deep Neural Networks

no code implementations ICLR 2019 Giuseppe Marra, Dario Zanca, Alessandro Betti, Marco Gori

The effectiveness of deep neural architectures has been widely supported in terms of both experimental and foundational principles.

Constraint-Based Visual Generation

no code implementations16 Jul 2018 Giuseppe Marra, Francesco Giannini, Michelangelo Diligenti, Marco Gori

We use deep architectures to model the involved variables, and propose a computational scheme where the learning process carries out a satisfaction of the constraints.

Generalization in quasi-periodic environments

no code implementations14 Jul 2018 Giovanni Bellettini, Alessandro Betti, Marco Gori

By and large the behavior of stochastic gradient is regarded as a challenging problem, and it is often presented in the framework of statistical machine learning.

Motion Invariance in Visual Environments

no code implementations14 Jul 2018 Alessandro Betti, Marco Gori, Stefano Melacci

The puzzle of computer vision might find new challenging solutions when we realize that most successful methods are working at image level, which is remarkably more difficult than processing directly visual streams, just as happens in nature.

Convolutional Networks in Visual Environments

no code implementations16 Jan 2018 Alessandro Betti, Marco Gori

Basically, while the theory enables the implementation of novel computer vision systems, it is also provides an intriguing explanation of the solution that evolution has discovered for humans, where it looks like that the video blurring in newborns and the day-night rhythm seem to emerge in a general computational framework, regardless of biology.

Variational Laws of Visual Attention for Dynamic Scenes

1 code implementation NeurIPS 2017 Dario Zanca, Marco Gori

We devise variational laws of the eye-movement that rely on a generalized view of the Least Action Principle in physics.

Saliency Detection Scanpath prediction

The principle of cognitive action - Preliminary experimental analysis

no code implementations9 Jan 2017 Marco Gori, Marco Maggini, Alessandro Rossi

In this document we shows a first implementation and some preliminary results of a new theory, facing Machine Learning problems in the frameworks of Classical Mechanics and Variational Calculus.

BIG-bench Machine Learning

Collapsing of dimensionality

no code implementations3 Jan 2017 Marco Gori, Marco Maggini, Alessandro Rossi

We analyze a new approach to Machine Learning coming from a modification of classical regularization networks by casting the process in the time dimension, leading to a sort of collapse of dimensionality in the problem of learning the model parameters.

Learning to see like children: proof of concept

no code implementations11 Aug 2014 Marco Gori, Marco Lippi, Marco Maggini, Stefano Melacci

In the last few years we have seen a growing interest in machine learning approaches to computer vision and, especially, to semantic labeling.

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