collaborators

9 papers

cs.CL2026

Dissecting Training-Free Uncertainty Estimation in Multimodal Large Language Models

Soroush Seifi, Vaggelis Dorovatas, Lin Li +2

Multimodal Large Language Models (MLLMs) are increasingly deployed in safety-critical settings, yet estimating when their answers can be trusted remains underexplored. We systemati…

cs.LG2026

Continual Self-Improvement with Lightweight Experiential Latent Memories

Vaggelis Dorovatas, Nancy Kalaj, Rahaf Aljundi

Large language models achieve strong reasoning performance by scaling inference-time compute, yet remain fundamentally stateless, discarding the rich, self-produced reasoning trace…

cs.CV2026

Ego: Embedding-Guided Personalization of Vision-Language Models

Soroush Seifi, Simon Gardier, Vaggelis Dorovatas +2

AI assistants that support humans in daily life are becoming increasingly feasible, driven by the rapid advancements in multimodal language models. A key challenge lies in overcomi…

cs.LG2026

Position: Modular Memory is the Key to Continual Learning Agents

Vaggelis Dorovatas, Malte Schwerin, Andrew D. Bagdanov +21

Foundation models have transformed machine learning through large-scale pretraining and increased test-time compute. Despite surpassing human performance in several domains, these…

cs.CV2025

Recurrent Attention-based Token Selection for Efficient Streaming Video-LLMs

Vaggelis Dorovatas, Soroush Seifi, Gunshi Gupta +1

Video Large Language Models (Video-LLMs) excel at understanding videos in-context, provided they have full access to the video when answering queries. However, these models face ch…

cs.CV2025

Online In-Context Distillation for Low-Resource Vision Language Models

Zhiqi Kang, Rahaf Aljundi, Vaggelis Dorovatas +1

As the field continues its push for ever more resources, this work turns the spotlight on a critical question: how can vision-language models (VLMs) be adapted to thrive in low-res…

cs.CL2025

Masked Diffusion Language Models with Frequency-Informed Training

Despoina Kosmopoulou, Efthymios Georgiou, Vaggelis Dorovatas +2

We present a masked diffusion language modeling framework for data-efficient training for the BabyLM 2025 Challenge. Our approach applies diffusion training objectives to language…

cs.LG2025

Auto-Compressing Networks

Vaggelis Dorovatas, Georgios Paraskevopoulos, Alexandros Potamianos

Deep neural networks with short residual connections have demonstrated remarkable success across domains, but increasing depth often introduces computational redundancy without cor…

cs.CV2025

Personalization Toolkit: Training Free Personalization of Large Vision Language Models

Soroush Seifi, Vaggelis Dorovatas, Matteo Cassinelli +3

Personalization of Large Vision-Language Models (LVLMs) involves customizing models to recognize specific users or object instances and to generate contextually tailored responses.…