Search Results for author: Felice Antonio Merra

Found 7 papers, 3 papers with code

Formalizing Multimedia Recommendation through Multimodal Deep Learning

1 code implementation11 Sep 2023 Daniele Malitesta, Giandomenico Cornacchia, Claudio Pomo, Felice Antonio Merra, Tommaso Di Noia, Eugenio Di Sciascio

Recommender systems (RSs) offer personalized navigation experiences on online platforms, but recommendation remains a challenging task, particularly in specific scenarios and domains.

Benchmarking Multimedia recommendation +1

Understanding the Effects of Adversarial Personalized Ranking Optimization Method on Recommendation Quality

no code implementations29 Jul 2021 Vito Walter Anelli, Yashar Deldjoo, Tommaso Di Noia, Felice Antonio Merra

However, a key overlooked aspect has been the beyond-accuracy performance of APR, i. e., novelty, coverage, and amplification of popularity bias, considering that recent results suggest that BPR, the building block of APR, is sensitive to the intensification of biases and reduction of recommendation novelty.

Learning-To-Rank Recommendation Systems

Multi-Step Adversarial Perturbations on Recommender Systems Embeddings

no code implementations3 Oct 2020 Vito Walter Anelli, Alejandro Bellogín, Yashar Deldjoo, Tommaso Di Noia, Felice Antonio Merra

However, while the single-step fast gradient sign method (FGSM) is the most explored perturbation strategy, multi-step (iterative) perturbation strategies, that demonstrated higher efficacy in the computer vision domain, have been highly under-researched in recommendation tasks.

Recommendation Systems

An Empirical Study of DNNs Robustification Inefficacy in Protecting Visual Recommenders

no code implementations2 Oct 2020 Vito Walter Anelli, Tommaso Di Noia, Daniele Malitesta, Felice Antonio Merra

However, since adversarial training techniques have proven to successfully robustify DNNs in preserving classification accuracy, to the best of our knowledge, two important questions have not been investigated yet: 1) How well can these defensive mechanisms protect the VRSs performance?

Recommendation Systems

A survey on Adversarial Recommender Systems: from Attack/Defense strategies to Generative Adversarial Networks

1 code implementation20 May 2020 Yashar Deldjoo, Tommaso Di Noia, Felice Antonio Merra

Latent-factor models (LFM) based on collaborative filtering (CF), such as matrix factorization (MF) and deep CF methods, are widely used in modern recommender systems (RS) due to their excellent performance and recommendation accuracy.

BIG-bench Machine Learning Collaborative Filtering +1

Assessing the Impact of a User-Item Collaborative Attack on Class of Users

no code implementations21 Aug 2019 Yashar Deldjoo, Tommaso Di Noia, Felice Antonio Merra

While previous works have focused on evaluating shilling attack strategies from a global perspective paying particular attention to the effect of the size of attacks and attacker's knowledge, in this work we explore the effectiveness of shilling attacks under novel aspects.

Collaborative Filtering Recommendation Systems

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