Search Results for author: Andrea Cini

Found 16 papers, 9 papers with code

On the Regularization of Learnable Embeddings for Time Series Processing

no code implementations18 Oct 2024 Luca Butera, Giovanni De Felice, Andrea Cini, Cesare Alippi

In this paper, we address this issue by investigating methods to regularize the learning of local learnable embeddings for time series processing.

Time Series Time Series Analysis

Graph-based Virtual Sensing from Sparse and Partial Multivariate Observations

1 code implementation19 Feb 2024 Giovanni De Felice, Andrea Cini, Daniele Zambon, Vladimir V. Gusev, Cesare Alippi

Virtual sensing techniques allow for inferring signals at new unmonitored locations by exploiting spatio-temporal measurements coming from physical sensors at different locations.

Graph Deep Learning for Time Series Forecasting

no code implementations24 Oct 2023 Andrea Cini, Ivan Marisca, Daniele Zambon, Cesare Alippi

The conditioning can take the form of an architectural inductive bias on the neural forecasting architecture, resulting in a family of deep learning models called spatiotemporal graph neural networks.

Deep Learning Inductive Bias +2

Graph-based Time Series Clustering for End-to-End Hierarchical Forecasting

1 code implementation30 May 2023 Andrea Cini, Danilo Mandic, Cesare Alippi

Relationships among time series can be exploited as inductive biases in learning effective forecasting models.

Clustering Time Series +2

Feudal Graph Reinforcement Learning

1 code implementation11 Apr 2023 Tommaso Marzi, Arshjot Khehra, Andrea Cini, Cesare Alippi

In this work, we propose a novel methodology, named Feudal Graph Reinforcement Learning (FGRL), that addresses such challenges by relying on hierarchical RL and a pyramidal message-passing architecture.

Decision Making Graph Clustering +5

Object-Centric Relational Representations for Image Generation

1 code implementation26 Mar 2023 Luca Butera, Andrea Cini, Alberto Ferrante, Cesare Alippi

In particular, we propose a methodology to condition the generation of objects in an image on the attributed graph representing their structure and the associated semantic information.

Image Generation Inductive Bias +1

Taming Local Effects in Graph-based Spatiotemporal Forecasting

1 code implementation NeurIPS 2023 Andrea Cini, Ivan Marisca, Daniele Zambon, Cesare Alippi

Spatiotemporal graph neural networks have shown to be effective in time series forecasting applications, achieving better performance than standard univariate predictors in several settings.

Time Series Time Series Forecasting

Graph state-space models

no code implementations4 Jan 2023 Daniele Zambon, Andrea Cini, Lorenzo Livi, Cesare Alippi

State-space models constitute an effective modeling tool to describe multivariate time series and operate by maintaining an updated representation of the system state from which predictions are made.

Decoder State Space Models +2

Scalable Spatiotemporal Graph Neural Networks

1 code implementation14 Sep 2022 Andrea Cini, Ivan Marisca, Filippo Maria Bianchi, Cesare Alippi

The training procedure can then be parallelized node-wise by sampling the node embeddings without breaking any dependency, thus enabling scalability to large networks.

Temporal Sequences Time Series +1

Learning to Reconstruct Missing Data from Spatiotemporal Graphs with Sparse Observations

2 code implementations26 May 2022 Ivan Marisca, Andrea Cini, Cesare Alippi

In particular, we propose a novel class of attention-based architectures that, given a set of highly sparse discrete observations, learn a representation for points in time and space by exploiting a spatiotemporal propagation architecture aligned with the imputation task.

Multivariate Time Series Imputation Time Series +2

Sparse Graph Learning from Spatiotemporal Time Series

1 code implementation NeurIPS 2023 Andrea Cini, Daniele Zambon, Cesare Alippi

Outstanding achievements of graph neural networks for spatiotemporal time series analysis show that relational constraints introduce an effective inductive bias into neural forecasting architectures.

Graph Learning Inductive Bias +3

A Graph Deep Learning Framework for High-Level Synthesis Design Space Exploration

no code implementations29 Nov 2021 Lorenzo Ferretti, Andrea Cini, Georgios Zacharopoulos, Cesare Alippi, Laura Pozzi

The design of efficient hardware accelerators for high-throughput data-processing applications, e. g., deep neural networks, is a challenging task in computer architecture design.

Graph Neural Network High-Level Synthesis

Filling the G_ap_s: Multivariate Time Series Imputation by Graph Neural Networks

2 code implementations ICLR 2022 Andrea Cini, Ivan Marisca, Cesare Alippi

In particular, we introduce a novel graph neural network architecture, named GRIN, which aims at reconstructing missing data in the different channels of a multivariate time series by learning spatio-temporal representations through message passing.

Graph Neural Network Missing Values +4

Deep Reinforcement Learning with Weighted Q-Learning

no code implementations20 Mar 2020 Andrea Cini, Carlo D'Eramo, Jan Peters, Cesare Alippi

In this regard, Weighted Q-Learning (WQL) effectively reduces bias and shows remarkable results in stochastic environments.

Deep Reinforcement Learning Gaussian Processes +4

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