Search Results for author: Sebastiano Vascon

Found 16 papers, 8 papers with code

Reassembling Broken Objects using Breaking Curves

1 code implementation5 Jun 2023 Ali Alagrami, Luca Palmieri, Sinem Aslan, Marcello Pelillo, Sebastiano Vascon

Results show that our solution performs well in reassembling different kinds of broken objects.

Object

Wild Patterns Reloaded: A Survey of Machine Learning Security against Training Data Poisoning

no code implementations4 May 2022 Antonio Emanuele Cinà, Kathrin Grosse, Ambra Demontis, Sebastiano Vascon, Werner Zellinger, Bernhard A. Moser, Alina Oprea, Battista Biggio, Marcello Pelillo, Fabio Roli

In this survey, we provide a comprehensive systematization of poisoning attacks and defenses in machine learning, reviewing more than 100 papers published in the field in the last 15 years.

BIG-bench Machine Learning Data Poisoning

The Group Loss++: A deeper look into group loss for deep metric learning

no code implementations4 Apr 2022 Ismail Elezi, Jenny Seidenschwarz, Laurin Wagner, Sebastiano Vascon, Alessandro Torcinovich, Marcello Pelillo, Laura Leal-Taixe

Deep metric learning has yielded impressive results in tasks such as clustering and image retrieval by leveraging neural networks to obtain highly discriminative feature embeddings, which can be used to group samples into different classes.

Clustering Image Retrieval +3

Relaxation Labeling Meets GANs: Solving Jigsaw Puzzles with Missing Borders

no code implementations28 Mar 2022 Marina Khoroshiltseva, Arianna Traviglia, Marcello Pelillo, Sebastiano Vascon

This paper proposes JiGAN, a GAN-based method for solving Jigsaw puzzles with eroded or missing borders.

Backdoor Learning Curves: Explaining Backdoor Poisoning Beyond Influence Functions

1 code implementation14 Jun 2021 Antonio Emanuele Cinà, Kathrin Grosse, Sebastiano Vascon, Ambra Demontis, Battista Biggio, Fabio Roli, Marcello Pelillo

Backdoor attacks inject poisoning samples during training, with the goal of forcing a machine learning model to output an attacker-chosen class when presented a specific trigger at test time.

BIG-bench Machine Learning Incremental Learning

The Hammer and the Nut: Is Bilevel Optimization Really Needed to Poison Linear Classifiers?

1 code implementation23 Mar 2021 Antonio Emanuele Cinà, Sebastiano Vascon, Ambra Demontis, Battista Biggio, Fabio Roli, Marcello Pelillo

One of the most concerning threats for modern AI systems is data poisoning, where the attacker injects maliciously crafted training data to corrupt the system's behavior at test time.

Bilevel Optimization Data Poisoning

Transductive Visual Verb Sense Disambiguation

1 code implementation20 Dec 2020 Sebastiano Vascon, Sinem Aslan, Gianluca Bigaglia, Lorenzo Giudice, Marcello Pelillo

Verb Sense Disambiguation is a well-known task in NLP, the aim is to find the correct sense of a verb in a sentence.

Sentence

DSLib: An open source library for the dominant set clustering method

1 code implementation15 Oct 2020 Sebastiano Vascon, Samuel Rota Bulò, Vittorio Murino, Marcello Pelillo

This package provides an implementation of the original DS clustering algorithm since no code has been officially released yet, together with a still growing collection of methods and variants related to it.

Clustering Graph Matching

The Group Loss for Deep Metric Learning

2 code implementations ECCV 2020 Ismail Elezi, Sebastiano Vascon, Alessandro Torcinovich, Marcello Pelillo, Laura Leal-Taixe

Deep metric learning has yielded impressive results in tasks such as clustering and image retrieval by leveraging neural networks to obtain highly discriminative feature embeddings, which can be used to group samples into different classes.

Ranked #20 on Metric Learning on CUB-200-2011 (using extra training data)

Clustering Image Retrieval +2

Unsupervised Domain Adaptation using Graph Transduction Games

no code implementations6 May 2019 Sebastiano Vascon, Sinem Aslan, Alessandro Torcinovich, Twan van Laarhoven, Elena Marchiori, Marcello Pelillo

Unsupervised domain adaptation (UDA) amounts to assigning class labels to the unlabeled instances of a dataset from a target domain, using labeled instances of a dataset from a related source domain.

Object Recognition Unsupervised Domain Adaptation

Ancient Coin Classification Using Graph Transduction Games

no code implementations2 Oct 2018 Sinem Aslan, Sebastiano Vascon, Marcello Pelillo

Experiments are conducted on the only publicly available dataset which is composed of 180 images of 60 types of Roman coins.

Classification General Classification +1

Transductive Label Augmentation for Improved Deep Network Learning

no code implementations26 May 2018 Ismail Elezi, Alessandro Torcinovich, Sebastiano Vascon, Marcello Pelillo

Motivated by the observation that in virtually all application domains it is easy to obtain unlabeled data, in this paper we take a different perspective and propose a \emph{label augmentation} approach.

Data Augmentation General Classification +2

Speaker Clustering Using Dominant Sets

1 code implementation21 May 2018 Feliks Hibraj, Sebastiano Vascon, Thilo Stadelmann, Marcello Pelillo

We report on a comprehensive set of experiments on the TIMIT dataset against standard clustering techniques and specific speaker clustering methods.

Sound Audio and Speech Processing

Context Aware Nonnegative Matrix Factorization Clustering

no code implementations15 Sep 2016 Rocco Tripodi, Sebastiano Vascon, Marcello Pelillo

These interactions allow the players to choose a cluster which is coherent with the clusters chosen by similar players, a property which is not guaranteed by NMF, since it produces a soft clustering of the data.

Clustering

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