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Giuseppe Castellucci

7 accepted papers

2024

Enhancing Low-Resource LLMs Classification with PEFT and Synthetic Data

COLING 2024main

Large Language Models (LLMs) operating in 0-shot or few-shot settings achieve competitive results in Text Classification tasks. In-Context Learning (ICL) typically achieves better accuracy than the 0-shot setting, but it pays in terms of efficiency, due to the longer input prompt. In this paper, we…

Cited by 2SourcePDFScholar
2024

Generative Explore-Exploit: Training-free Optimization of Generative Recommender Systems using LLM Optimizers

ACL 2024long

Recommender systems are widely used to suggest engaging content, and Large Language Models (LLMs) have given rise to generative recommenders. Such systems can directly generate items, including for open-set tasks like question suggestion. While the world knowledge of LLMs enables good recommendation…

Cited by 4SourcePDFScholar
2024

Leveraging Interesting Facts to Enhance User Engagement with Conversational Interfaces

NAACL 2024industry

Conversational Task Assistants (CTAs) guide users in performing a multitude of activities, such as making recipes. However, ensuring that interactions remain engaging, interesting, and enjoyable for CTA users is not trivial, especially for time-consuming or challenging tasks. Grounded in psychologic…

2022

Learning to Generate Examples for Semantic Processing Tasks

NAACL 2022long

Even if recent Transformer-based architectures, such as BERT, achieved impressive results in semantic processing tasks, their fine-tuning stage still requires large scale training resources. Usually, Data Augmentation (DA) techniques can help to deal with low resource settings. In Text Classificatio…

2022

Wizard of Tasks: A Novel Conversational Dataset for Solving Real-World Tasks in Conversational Settings

COLING 2022main

Conversational Task Assistants (CTAs) are conversational agents whose goal is to help humans perform real-world tasks. CTAs can help in exploring available tasks, answering task-specific questions and guiding users through step-by-step instructions. In this work, we present Wizard of Tasks, the firs…

Cited by 24SourcePDFScholar
2021

Continual Learning for Named Entity Recognition

AAAI 2021technical

Named Entity Recognition (NER) is a vital task in various NLP applications. However, in many real-world scenarios (e.g., voice-enabled assistants) new named entities are frequently introduced, entailing re-training NER models to support these new entities. Re-annotating the original training data fo…

Cited by 83SourcePDFScholar
2021

Learning to Solve NLP Tasks in an Incremental Number of Languages

ACL 2021short

In real scenarios, a multilingual model trained to solve NLP tasks on a set of languages can be required to support new languages over time. Unfortunately, the straightforward retraining on a dataset containing annotated examples for all the languages is both expensive and time-consuming, especially…

Cited by 21SourcePDFScholar