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Stefano Bertolasi

dblp:427/9134 · DBLP profile ↗
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1ranked-venue papers
1as first author
1since 2021 · last 2025
0009-0004-9895-8520ORCID · reported

Domains — the database's venue-derived domains; a paper can count in several

Artificial intelligence and machine learning · 1 · 1 first-author · 1 since 2021Databases, data management, data science and information retrieval · 1 · 1 first-author · 1 since 2021

Expertise — from the expertise taxonomy: the topics of the expert's papers under the CCF categories. A weight counts papers with recency: 1 for a paper about the topic, 0.3 when the topic is its context, halved every five years.

Databases, data mining, and information retrieval
1 paper
Data mining · 88% Machine learning and data management · 12%

Topics — the 4 heaviest of 4, each with the papers that count most for it

TopicWeightPapersLastEvidence papers
Data mining › time series analysis
change point detection
0.912025
MuRAL-CPD: Active Learning for Multiresolution Change Point Detection · ICDM 2025
Data mining
time series analysis
0.912025
MuRAL-CPD: Active Learning for Multiresolution Change Point Detection · ICDM 2025
Machine learning and data management
active learning
0.312025
MuRAL-CPD: Active Learning for Multiresolution Change Point Detection · ICDM 2025
Data mining
semi-supervised learning
0.312025
MuRAL-CPD: Active Learning for Multiresolution Change Point Detection · ICDM 2025

Methods — techniques the papers use, named apart from their topics

wavelet decomposition · 0.9active learning · 0.9
YearPublicationVenuePosition
2025 MuRAL-CPD: Active Learning for Multiresolution Change Point Detection
abstract
Change Point Detection (CPD) is a critical task in time series analysis, aiming to identify moments when the underlying data-generating process shifts. Traditional CPD methods often rely on unsupervised techniques, which lack adaptability to task-specific definitions of change and cannot benefit from user knowledge. To address these limitations, we propose MuRAL-CPD, a novel semi-supervised method that integrates active learning into a multiresolution CPD algorithm. MuRALCPD leverages a wavelet-based multiresolution decomposition to detect changes across multiple temporal scales and incorporates user feedback to iteratively optimize key hyperparameters. This interaction enables the model to align its notion of change with that of the user, improving both accuracy and interpretability. Our experimental results on several real-world datasets show the effectiveness of MuRAL-CPD against state-of-the-art methods, particularly in scenarios where minimal supervision is available.
Stefano Bertolasi, Diego Carrera, Diego Stucchi, Pasqualina Fragneto, Luigi Amedeo Bianchi
ICDM1