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Alexandros Potamianos

7 accepted papers

2025

Aggregation Artifacts in Subjective Tasks Collapse Large Language Models’ Posteriors

NAACL 2025long

In-context Learning (ICL) has become the primary method for performing natural language tasks with Large Language Models (LLMs). The knowledge acquired during pre-training is crucial for this few-shot capability, providing the model with task priors. However, recent studies have shown that ICL predo…

2023

Adapted Multimodal Bert with Layer-Wise Fusion for Sentiment Analysis

ICASSP 2023accepted

Multimodal learning pipelines have benefited from the success of pretrained language models. However, this comes at the cost of increased model parameters. In this work, we propose Adapted Multimodal BERT (AMB), a BERT-based architecture for multimodal tasks that uses a combination of adapter module…

Cited by 0SourceScholar
2023

Multi-User MultiWOZ: Task-Oriented Dialogues among Multiple Users

EMNLP 2023long findings

While most task-oriented dialogues assume conversations between the agent and one user at a time, dialogue systems are increasingly expected to communicate with multiple users simultaneously who make decisions collaboratively. To facilitate development of such systems, we release the Multi-User Mult…

Cited by 0SourcecodeScholar
2022

Mmlatch: Bottom-Up Top-Down Fusion For Multimodal Sentiment Analysis

ICASSP 2022accepted

Current deep learning approaches for multimodal fusion rely on bottom-up fusion of high and mid-level latent modality representations (late/mid fusion) or low level sensory inputs (early fusion). Models of human perception highlight the importance of top-down fusion, where high-level representations…

Cited by 0SourceScholar
2021

UDALM: Unsupervised Domain Adaptation through Language Modeling

NAACL 2021long

In this work we explore Unsupervised Domain Adaptation (UDA) of pretrained language models for downstream tasks. We introduce UDALM, a fine-tuning procedure, using a mixed classification and Masked Language Model loss, that can adapt to the target domain distribution in a robust and sample efficient…

2017

Engagement detection for children with Autism Spectrum Disorder

ICASSP 2017accepted

Children with Autism Spectrum Disorder (ASD) face several difficulties in social communication. Hence, analyzing social interaction can provide insight on their social and cognitive skills. In this paper, we investigate the degree of engagement of children in interactions with their parents. Feature…

Cited by 0SourceScholar