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Umberto Michieli

21 accepted papers

2026

CLUSTERING-DRIVEN MEMORY COMPRESSION FOR ON-DEVICE LARGE LANGUAGE MODELS

ICASSP 2026poster

Large language models (LLMs) often rely on user-specific memories distilled from past interactions to enable personalized generation. A common practice is to concatenate these memories with the input prompt, but this approach quickly exhausts the limited context available in on-device LLMs. Compress…

Cited by 0SourcePDFScholar
2026

DATA-DRIVEN CLUSTERING AND MERGING OF ADAPTERS FOR ON-DEVICE LARGE LANGUAGE MODELS

ICASSP 2026poster

On-device large language models commonly employ task-specific adapters (e.g., LoRAs) to deliver strong performance on downstream tasks. While storing all available adapters is impractical due to memory constraints, mobile devices typically have sufficient capacity to store a limited number of these…

Cited by 0SourcePDFScholar
2025

Adaptive Cannistraci-Hebb Network Automata Modelling of Complex Networks for Path-based Link Prediction

NeurIPS 2025poster

Many complex networks have partially observed or evolving connectivity, making link prediction a fundamental task. Topological link prediction infers missing links using only network topology, with applications in social, biological, and technological systems. The Cannistraci-Hebb (CH) theory prov…

Cited by 0SourcecodeScholar
2025

Brain network science modelling of sparse neural networks enables Transformers and LLMs to perform as fully connected

NeurIPS 2025poster

This study aims to enlarge our current knowledge on the application of brain-inspired network science principles for training artificial neural networks (ANNs) with sparse connectivity. Dynamic sparse training (DST) emulates the synaptic turnover of real brain networks, reducing the computational de…

Cited by 0SourcecodeScholar
2025

Controllable Forgetting Mechanism for Few-Shot Class-Incremental Learning

ICASSP 2025accepted

Class-incremental learning in the context of limited personal labeled samples (few-shot) is critical for numerous real-world applications, such as smart home devices. A key challenge in these scenarios is balancing the trade-off between adapting to new, personalized classes and maintaining the perfo…

Cited by 0SourceScholar
2025

DreamCache: Finetuning-Free Lightweight Personalized Image Generation via Feature Caching

CVPR 2025poster

Personalized image generation requires text-to-image generative models that capture the core features of a reference subject to allow for controlled generation across different contexts. Existing methods face challenges due to complex training requirements, high inference costs, limited flexibility,…

2025

Efficient Compositional Multi-tasking for On-device Large Language Models

EMNLP 2025

Adapter parameters provide a mechanism to modify the behavior of machine learning models and have gained significant popularity in the context of large language models (LLMs) and generative AI. These parameters can be merged to support multiple tasks via a process known as task merging. However, pri

Cited by 0SourcePDFScholar
2025

HydraOpt: Navigating the Efficiency-Performance Trade-off of Adapter Merging

EMNLP 2025

Large language models (LLMs) often leverage adapters, such as low-rank-based adapters, to achieve strong performance on downstream tasks. However, storing a separate adapter for each task significantly increases memory requirements, posing a challenge for resource-constrained environ ments such as m

Cited by 0SourcePDFScholar
2025

LoRA.rar: Learning to Merge LoRAs via Hypernetworks for Subject-Style Conditioned Image Generation

ICCV 2025poster

Recent advancements in image generation models have enabled personalized image creation with both user-defined subjects (content) and styles. Prior works achieved personalization by merging corresponding low-rank adapters (LoRAs) through optimization-based methods, which are computationally demandin…

2024

Cross-Architecture Auxiliary Feature Space Translation for Efficient Few-Shot Personalized Object Detection

IROS 2024poster

Recent years have seen object detection robotic systems deployed in several personal devices (e.g., home robots and appliances). This has highlighted a challenge in their design, i.e., they cannot efficiently update their knowledge to distinguish between general classes and user-specific instances (…

Cited by 3SourceScholar
2024

Deep Neural Network Models Trained with a Fixed Random Classifier Transfer Better Across Domains

ICASSP 2024accepted

The recently discovered Neural collapse (NC) phenomenon states that the last-layer weights of Deep Neural Networks (DNN), converge to the so-called Equiangular Tight Frame (ETF) simplex, at the terminal phase of their training. This ETF geometry is equivalent to vanishing within-class variability of…

Cited by 0SourceScholar
2024

Enhanced Model Robustness to Input Corruptions by Per-corruption Adaptation of Normalization Statistics

IROS 2024poster

Developing a reliable vision system is a fundamental challenge for robotic technologies (e.g., indoor service robots and outdoor autonomous robots) which can ensure reliable navigation even in challenging environments such as adverse weather conditions (e.g., fog, rain), poor lighting conditions (e.…

Cited by 1SourceScholar
2024

FFT-Based Selection and Optimization of Statistics for Robust Recognition of Severely Corrupted Images

ICASSP 2024accepted

Improving model robustness in case of corrupted images is among the key challenges to enable robust vision systems on smart devices, such as robotic agents. Particularly, robust test-time performance is imperative for most of the applications. This paper presents a novel approach to improve robustne…

Cited by 0SourceScholar
2024

Model Merging and Safety Alignment: One Bad Model Spoils the Bunch

EMNLP 2024finding

Merging Large Language Models (LLMs) is a cost-effective technique for combining multiple expert LLMs into a single versatile model, retaining the expertise of the original ones. However, current approaches often overlook the importance of safety alignment during merging, leading to highly misaligne…

2024

Object-Conditioned Bag of Instances for Few-Shot Personalized Instance Recognition

ICASSP 2024accepted

Nowadays, users demand for increased personalization of vision systems to localize and identify personal instances of objects (e.g., my dog rather than dog) from a few-shot dataset only. Despite outstanding results of deep networks on classical label-abundant benchmarks (e.g., those of the latest YO…

Cited by 0SourceScholar
2024

Swiss DINO: Efficient and Versatile Vision Framework for On-device Personal Object Search

IROS 2024poster

In this paper, we address a recent trend in robotic home appliances to include vision systems on personal devices, capable of personalizing the appliances on the fly. In particular, we formulate and address an important technical task of personal object search, which involves localization and identi…

Cited by 2SourcecodeScholar
2021

Continual Semantic Segmentation via Repulsion-Attraction of Sparse and Disentangled Latent Representations

CVPR 2021poster

Deep neural networks suffer from the major limitation of catastrophic forgetting old tasks when learning new ones. In this paper we focus on class incremental continual learning in semantic segmentation, where new categories are made available over time while previous training data is not retained.…

Cited by 193PDFScholar
2021

RECALL: Replay-Based Continual Learning in Semantic Segmentation

ICCV 2021poster

Deep networks allow to obtain outstanding results in semantic segmentation, however they need to be trained in a single shot with a large amount of data. Continual learning settings where new classes are learned in incremental steps and previous training data is no longer available are challenging d…

Cited by 158PDFcodeScholar
2020

GMNet: Graph Matching Network for Large Scale Part Semantic Segmentation in the Wild

ECCV 2020poster

The semantic segmentation of parts of objects in the wild is a challenging task in which multiple instances of objects and multiple parts within those objects must be detected in the scene. This problem remains nowadays very marginally explored, despite its fundamental importance towards detailed ob…