Search Results for author: Pietro Lió

Found 14 papers, 11 papers with code

A Feature Reuse Framework with Texture-adaptive Aggregation for Reference-based Super-Resolution

1 code implementation2 Jun 2023 Xiaoyong Mei, Yi Yang, Ming Li, Changqin Huang, Kai Zhang, Pietro Lió

In this study, we propose a feature reuse framework that guides the step-by-step texture reconstruction process through different stages, reducing the negative impacts of perceptual and adversarial loss.

Image Super-Resolution Reference-based Super-Resolution

Structure-based Drug Design with Equivariant Diffusion Models

2 code implementations24 Oct 2022 Arne Schneuing, Yuanqi Du, Charles Harris, Arian Jamasb, Ilia Igashov, Weitao Du, Tom Blundell, Pietro Lió, Carla Gomes, Max Welling, Michael Bronstein, Bruno Correia

Structure-based drug design (SBDD) aims to design small-molecule ligands that bind with high affinity and specificity to pre-determined protein targets.

Specificity

Global Concept-Based Interpretability for Graph Neural Networks via Neuron Analysis

1 code implementation22 Aug 2022 Han Xuanyuan, Pietro Barbiero, Dobrik Georgiev, Lucie Charlotte Magister, Pietro Lió

We propose a novel approach for producing global explanations for GNNs using neuron-level concepts to enable practitioners to have a high-level view of the model.

Approximate Latent Force Model Inference

1 code implementation24 Sep 2021 Jacob D. Moss, Felix L. Opolka, Bianca Dumitrascu, Pietro Lió

Physically-inspired latent force models offer an interpretable alternative to purely data driven tools for inference in dynamical systems.

Gaussian Processes

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

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

Gene Regulatory Network Inference with Latent Force Models

no code implementations6 Oct 2020 Jacob Moss, Pietro Lió

Delays in protein synthesis cause a confounding effect when constructing Gene Regulatory Networks (GRNs) from RNA-sequencing time-series data.

Gaussian Processes Time Series +2

Graph representation forecasting of patient's medical conditions: towards a digital twin

1 code implementation17 Sep 2020 Pietro Barbiero, Ramon Viñas Torné, Pietro Lió

Objective: Modern medicine needs to shift from a wait and react, curative discipline to a preventative, interdisciplinary science aiming at providing personalised, systemic and precise treatment plans to patients.

Generative Adversarial Network

Perturbation theory approach to study the latent space degeneracy of Variational Autoencoders

no code implementations10 Jul 2019 Helena Andrés-Terré, Pietro Lió

The use of Variational Autoencoders in different Machine Learning tasks has drastically increased in the last years.

BIG-bench Machine Learning Clustering +1

Proximal Distilled Evolutionary Reinforcement Learning

1 code implementation24 Jun 2019 Cristian Bodnar, Ben Day, Pietro Lió

We propose a novel algorithm called Proximal Distilled Evolutionary Reinforcement Learning (PDERL) that is characterised by a hierarchical integration between evolution and learning.

OpenAI Gym reinforcement-learning +1

Factorised Neural Relational Inference for Multi-Interaction Systems

2 code implementations21 May 2019 Ezra Webb, Ben Day, Helena Andres-Terre, Pietro Lió

Many complex natural and cultural phenomena are well modelled by systems of simple interactions between particles.

Trajectory Prediction

Learning Rare Word Representations using Semantic Bridging

no code implementations24 Jul 2017 Victor Prokhorov, Mohammad Taher Pilehvar, Dimitri Kartsaklis, Pietro Lió, Nigel Collier

We propose a methodology that adapts graph embedding techniques (DeepWalk (Perozzi et al., 2014) and node2vec (Grover and Leskovec, 2016)) as well as cross-lingual vector space mapping approaches (Least Squares and Canonical Correlation Analysis) in order to merge the corpus and ontological sources of lexical knowledge.

Graph Embedding Word Similarity

Comparative Study of Inference Methods for Bayesian Nonnegative Matrix Factorisation

1 code implementation13 Jul 2017 Thomas Brouwer, Jes Frellsen, Pietro Lió

In this paper, we study the trade-offs of different inference approaches for Bayesian matrix factorisation methods, which are commonly used for predicting missing values, and for finding patterns in the data.

Bayesian Inference Model Selection

Bayesian Hybrid Matrix Factorisation for Data Integration

2 code implementations17 Apr 2017 Thomas Brouwer, Pietro Lió

We introduce a novel Bayesian hybrid matrix factorisation model (HMF) for data integration, based on combining multiple matrix factorisation methods, that can be used for in- and out-of-matrix prediction of missing values.

Data Integration

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