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Sabino Roccotelli

dblp:407/3246 · DBLP profile ↗
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2ranked-venue papers
0as first author
2since 2021 · last 2026
0009-0003-3479-9607ORCID · corroborated

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

Databases, data management, data science and information retrieval · 1 · 1 since 2021Human-computer interaction and ubiquitous computing · 1 · 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
Information retrieval · 62% Recommender systems · 38%

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

TopicWeightPapersLastEvidence papers
Recommender systems
graph-based recommendation
1.012026
ACE: Semantically-Grounded Graph Alignment via Affective Contrastive Learning · SIGIR 2026
Information retrieval
semantic alignment
1.012026
ACE: Semantically-Grounded Graph Alignment via Affective Contrastive Learning · SIGIR 2026
Information retrieval › retrieval models › neural retrieval
dense retrieval
0.312026
ACE: Semantically-Grounded Graph Alignment via Affective Contrastive Learning · SIGIR 2026
Information retrieval › similarity search
top-k retrieval
0.312026
ACE: Semantically-Grounded Graph Alignment via Affective Contrastive Learning · SIGIR 2026

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

noise contrastive estimation · 1.0large language model · 1.0contrastive learning · 1.0
YearPublicationVenuePosition
2026 ACE: Semantically-Grounded Graph Alignment via Affective Contrastive Learning
abstract
Graph Contrastive Learning (GCL) methods for recommendation learn representations by propagating signals over user-item interaction graphs. However, modeling these graphs with homogeneous edges can lead to semantic-structural misalignment, where information is exchanged between structurally adjacent but semantically dissimilar items, adversely affecting retrieval quality. Existing solutions typically rely on auxiliary encoders or additional supervision, increasing model complexity and training cost. We propose ACE (Affective Contrastive Embeddings), a framework that improves representation alignment by incorporating affective semantics into contrastive learning. ACE encodes the affective dimensions of valence and arousal as a topological prior, encouraging consistency between learned embeddings and an affective semantic space distilled from large language models. To operationalize this alignment, we introduce a Semantically Weighted Noise Contrastive Estimation (SW-NCE) loss that modulates contrastive gradients according to users' affective preferences. Experiments on Amazon, Last.fm, and SiTunes demonstrate that ACE consistently improves top-K retrieval performance over 11 baselines while reducing computational overhead. These results indicate that affective geometric alignment is an effective and efficient mechanism for enhancing graph-based retrieval models.
Potito Aghilar, Sabino Roccotelli, Vito Walter Anelli, Alejandro Bellogín, Michelantonio Trizio, Tommaso Di Noia
SIGIR2
2025 Adaptive User Modeling in Visual Merchandising: Balancing Brand Identity with Operational Efficiency
abstract
Maintaining a consistent brand identity across a global network of retail stores while adhering to local constraints has long challenged Visual Merchandisers.Legacy processes, often reliant on subjective "by-eye" adjustments, can drive up operational costs and lead to inconsistent in-store execution.We formalize a user modeling framework implementing a multi-criteria utility function that balances brand identity and operational overhead.We integrated our framework in a 3D virtual tour design platform, deploying it in the ecosystem of OVS, a global fashion firm.Through a preliminary user study, we showcase that our solution enables lower iteration cycles and decreases store-to-store discrepancies.
Potito Aghilar, Vito Walter Anelli, Andrea Lops, Fedelucio Narducci, Azzurra Ragone, Sabino Roccotelli, Michelantonio Trizio
UMAP6