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Deep learning has proved an effective means to capture the non-linear associations of user preferences. However, the main drawback of existing deep learning architectures is that they follow a fixed recommendation strategy, ignoring users'…

Information Retrieval · Computer Science 2020-12-02 Dimitrios Rafailidis , Stefanos Antaris

Reinforcement Learning from Human Feedback (RLHF) has emerged as a popular paradigm for capturing human intent to alleviate the challenges of hand-crafting the reward values. Despite the increasing interest in RLHF, most works learn black…

Machine Learning · Computer Science 2024-10-14 Akansha Kalra , Daniel S. Brown

By augmenting Large Language Models (LLMs) with external tools, their capacity to solve complex problems has been significantly enhanced. However, despite ongoing advancements in the parsing capabilities of LLMs, incorporating all available…

Computation and Language · Computer Science 2025-11-24 Hang Gao , Yongfeng Zhang

Various deep learning models, especially some latest Transformer-based approaches, have greatly improved the state-of-art performance for long-term time series forecasting.However, those transformer-based models suffer a severe…

Machine Learning · Computer Science 2022-06-27 Tian Zhou , Jianqing Zhu , Xue Wang , Ziqing Ma , Qingsong Wen , Liang Sun , Rong Jin

Researchers have demonstrated that Deep Reinforcement Learning (DRL) is a powerful tool for finding policies that perform well on complex robotic systems. However, these policies are often unpredictable and can induce highly variable…

Robotics · Computer Science 2022-03-08 Sean Gillen , Asutay Ozmen , Katie Byl

Tool learning has emerged as a promising paradigm for large language models (LLMs) to address real-world challenges. Due to the extensive and irregularly updated number of tools, tool retrieval for selecting the desired tool subset is…

Computation and Language · Computer Science 2026-04-10 Kunfeng Chen , Luyao Zhuang , Fei Liao , Juhua Liu , Jian Wang , Bo Du

Every data selection method inherently has a target. In practice, these targets often emerge implicitly through benchmark-driven iteration: researchers develop selection strategies, train models, measure benchmark performance, then refine…

Dense passage retrieval (DPR) is the first step in the retrieval augmented generation (RAG) paradigm for improving the performance of large language models (LLM). DPR fine-tunes pre-trained networks to enhance the alignment of the…

Computation and Language · Computer Science 2024-10-07 Benjamin Reichman , Larry Heck

Pseudo-relevance feedback (PRF) can enhance average retrieval effectiveness over a sufficiently large number of queries. However, PRF often introduces a drift into the original information need, thus hurting the retrieval effectiveness of…

Information Retrieval · Computer Science 2024-01-23 Suchana Datta , Debasis Ganguly , Sean MacAvaney , Derek Greene

Recent advancements in large language models (LLMs) integrated with external tools and APIs have successfully addressed complex tasks by using in-context learning or fine-tuning. Despite this progress, the vast scale of tool retrieval…

Information Retrieval · Computer Science 2024-10-07 Yuxiang Zhang , Xin Fan , Junjie Wang , Chongxian Chen , Fan Mo , Tetsuya Sakai , Hayato Yamana

Deep learning based recommendation models (DLRM) are widely used in several business critical applications. Training such recommendation models efficiently is challenging because they contain billions of embedding-based parameters, leading…

Distributed, Parallel, and Cluster Computing · Computer Science 2023-11-02 Saurabh Agarwal , Chengpo Yan , Ziyi Zhang , Shivaram Venkataraman

We investigate the exploitation of both lexical and neural relevance signals for ad-hoc passage retrieval. Our exploration involves a large-scale training dataset in which dense neural representations of MS-MARCO queries and passages are…

Information Retrieval · Computer Science 2025-10-21 Franco Maria Nardini , Raffaele Perego , Nicola Tonellotto , Salvatore Trani

Deep neural networks (DNNs) and decision trees (DTs) are both state-of-the-art classifiers. DNNs perform well due to their representational learning capabilities, while DTs are computationally efficient as they perform inference along one…

Computer Vision and Pattern Recognition · Computer Science 2022-11-22 Noam Gottlieb , Michael Werman

In contemporary radiotherapy planning (RTP), a key module leaf sequencing is predominantly addressed by optimization-based approaches. In this paper, we propose a novel deep reinforcement learning (DRL) model termed as Reinforced Leaf…

Machine Learning · Computer Science 2024-06-05 Riqiang Gao , Florin C. Ghesu , Simon Arberet , Shahab Basiri , Esa Kuusela , Martin Kraus , Dorin Comaniciu , Ali Kamen

Retrieval-augmented generation (RAG) integrates large language models ( LLM s) with retrievers to access external knowledge, improving the factuality of LLM generation in knowledge-grounded tasks. To optimize the RAG performance, most…

Information Retrieval · Computer Science 2025-05-07 Zhengliang Shi , Lingyong Yan , Weiwei Sun , Yue Feng , Pengjie Ren , Xinyu Ma , Shuaiqiang Wang , Dawei Yin , Maarten de Rijke , Zhaochun Ren

Deep neural networks have achieved significant improvements in information retrieval (IR). However, most existing models are computational costly and can not efficiently scale to long documents. This paper proposes a novel End-to-End neural…

Computation and Language · Computer Science 2019-08-13 Chen Zheng , Yu Sun , Shengxian Wan , Dianhai Yu

Faster inference of deep learning models is highly demanded on edge devices and even servers, for both financial and environmental reasons. To address this issue, we propose SoftNeuro, a novel, high-performance inference framework with…

Machine Learning · Computer Science 2021-10-13 Masaki Hilaga , Yasuhiro Kuroda , Hitoshi Matsuo , Tatsuya Kawaguchi , Gabriel Ogawa , Hiroshi Miyake , Yusuke Kozawa

Meta-learning methods typically learn tasks under the assumption that all tasks are equally important. However, this assumption is often not valid. In real-world applications, tasks can vary both in their importance during different…

Machine Learning · Computer Science 2024-05-14 Donglin Zhan , James Anderson

Combining the merits of both denoising diffusion probabilistic models and gradient boosting, the diffusion boosting paradigm is introduced for tackling supervised learning problems. We develop Diffusion Boosted Trees (DBT), which can be…

Machine Learning · Statistics 2024-06-05 Xizewen Han , Mingyuan Zhou

Deep pretrained transformer networks are effective at various ranking tasks, such as question answering and ad-hoc document ranking. However, their computational expenses deem them cost-prohibitive in practice. Our proposed approach, called…

Information Retrieval · Computer Science 2020-05-27 Sean MacAvaney , Franco Maria Nardini , Raffaele Perego , Nicola Tonellotto , Nazli Goharian , Ophir Frieder