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This paper proposes a new principled multi-task representation learning framework (InfoMTL) to extract noise-invariant sufficient representations for all tasks. It ensures sufficiency of shared representations for all tasks and mitigates…

Computation and Language · Computer Science 2025-03-07 Dou Hu , Lingwei Wei , Wei Zhou , Songlin Hu

Large-scale web-scraped text corpora used to train general-purpose AI models often contain harmful demographic-targeted social biases, creating a regulatory need for data auditing and developing scalable bias-detection methods. Although…

Computation and Language · Computer Science 2026-04-10 Ayan Majumdar , Feihao Chen , Jinghui Li , Xiaozhen Wang

Large Language Models (LLMs) have demonstrated unprecedented language understanding and reasoning capabilities to capture diverse user preferences and advance personalized recommendations. Despite the growing interest in LLM-based…

Information Retrieval · Computer Science 2025-04-30 Zihuai Zhao , Wenqi Fan , Yao Wu , Qing Li

Despite recent success of deep network-based Reinforcement Learning (RL), it remains elusive to achieve human-level efficiency in learning novel tasks. While previous efforts attempt to address this challenge using meta-learning strategies,…

Machine Learning · Computer Science 2022-05-03 Haozhe Wang , Jiale Zhou , Xuming He

Much of vision-and-language research focuses on a small but diverse set of independent tasks and supporting datasets often studied in isolation; however, the visually-grounded language understanding skills required for success at these…

Computer Vision and Pattern Recognition · Computer Science 2020-04-28 Jiasen Lu , Vedanuj Goswami , Marcus Rohrbach , Devi Parikh , Stefan Lee

Stereotypes influence social perceptions and can escalate into discrimination and violence. While NLP research has extensively addressed gender bias and hate speech, stereotype detection remains an emerging field with significant societal…

Computation and Language · Computer Science 2025-10-08 Alessandra Teresa Cignarella , Anastasia Giachanou , Els Lefever

Recent research considers few-shot intent detection as a meta-learning problem: the model is learning to learn from a consecutive set of small tasks named episodes. In this work, we propose ProtAugment, a meta-learning algorithm for short…

Computation and Language · Computer Science 2021-05-28 Thomas Dopierre , Christophe Gravier , Wilfried Logerais

Reinforcement learning (RL) is a promising approach for aligning large language models (LLMs) knowledge with sequential decision-making tasks. However, few studies have thoroughly investigated the impact on LLM agents capabilities of…

Although Large Language Models (LLMs) are becoming increasingly powerful, they still exhibit significant but subtle weaknesses, such as mistakes in instruction-following or coding tasks. As these unexpected errors could lead to severe…

Computation and Language · Computer Science 2024-12-11 Jiale Cheng , Yida Lu , Xiaotao Gu , Pei Ke , Xiao Liu , Yuxiao Dong , Hongning Wang , Jie Tang , Minlie Huang

Recent advancements in reasoning abilities of Large Language Models (LLM) has promoted their usage in problems that require high-level planning for robots and artificial agents. However, current techniques that utilize LLMs for such…

Artificial Intelligence · Computer Science 2023-10-17 Yash Shukla , Wenchang Gao , Vasanth Sarathy , Alvaro Velasquez , Robert Wright , Jivko Sinapov

Large Language Models (LLMs) are increasingly being explored for building Agents capable of active environmental interaction (e.g., via tool use) to solve complex problems. Reinforcement Learning (RL) is considered a key technology with…

Computation and Language · Computer Science 2025-11-19 Mingyue Cheng , Jie Ouyang , Shuo Yu , Ruiran Yan , Yucong Luo , Zirui Liu , Daoyu Wang , Qi Liu , Enhong Chen

Recent advancements in Generative AI and Large Language Models (LLMs) have enabled the creation of highly realistic synthetic content, raising concerns about the potential for malicious use, such as misinformation and manipulation.…

Computation and Language · Computer Science 2025-06-02 Andrea Pedrotti , Michele Papucci , Cristiano Ciaccio , Alessio Miaschi , Giovanni Puccetti , Felice Dell'Orletta , Andrea Esuli

Pre-training text representations has recently been shown to significantly improve the state-of-the-art in many natural language processing tasks. The central goal of pre-training is to learn text representations that are useful for…

Computation and Language · Computer Science 2020-04-14 Shangwen Lv , Yuechen Wang , Daya Guo , Duyu Tang , Nan Duan , Fuqing Zhu , Ming Gong , Linjun Shou , Ryan Ma , Daxin Jiang , Guihong Cao , Ming Zhou , Songlin Hu

Recent advancements in Large Language Models(LLMs) have demonstrated their capabilities not only in reasoning but also in invoking external tools, particularly search engines. However, teaching models to discern when to invoke search and…

Computation and Language · Computer Science 2025-05-14 Zeyang Sha , Shiwen Cui , Weiqiang Wang

Stereotypes in large language models (LLMs) can perpetuate harmful societal biases. Despite the widespread use of models, little is known about where these biases reside in the neural network. This study investigates the internal mechanisms…

Computation and Language · Computer Science 2026-04-23 Alex D'Souza

The inherent uncertainty in the environmental transition model of Reinforcement Learning (RL) necessitates a delicate balance between exploration and exploitation. This balance is crucial for optimizing computational resources to accurately…

Machine Learning · Computer Science 2025-05-21 Yongxin Deng , Xihe Qiu , Jue Chen , Xiaoyu Tan

Reinforcement Learning (RL) has made significant strides in enabling artificial agents to learn diverse behaviors. However, learning an effective policy often requires a large number of environment interactions. To mitigate sample…

Artificial Intelligence · Computer Science 2024-04-04 Yash Shukla , Tanushree Burman , Abhishek Kulkarni , Robert Wright , Alvaro Velasquez , Jivko Sinapov

Foundation models contain a wealth of information from their vast number of training samples. However, most prior arts fail to extract this information in a precise and efficient way for small sample sizes. In this work, we propose a…

Machine Learning · Computer Science 2024-04-26 Nico Schiavone , Xingyu Li

Large language models (LLMs) have grown more powerful in language generation, producing fluent text and even imitating personal style. Yet, this ability also heightens the risk of identity impersonation. To the best of our knowledge, no…

Computation and Language · Computer Science 2026-05-01 Lang Gao , Xuhui Li , Chenxi Wang , Mingzhe Li , Wei Liu , Zirui Song , Jinghui Zhang , Rui Yan , Preslav Nakov , Xiuying Chen

To leverage the power of big data from source tasks and overcome the scarcity of the target task samples, representation learning based on multi-task pretraining has become a standard approach in many applications. However, up until now,…

Machine Learning · Computer Science 2022-02-03 Yifang Chen , Simon S. Du , Kevin Jamieson