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Scaling Large Language Models (LLMs) yields performance gains but incurs substantial training costs. Depth up-scaling offers training efficiency by adding new layers to pre-trained models. However, most existing methods copy or average…

计算与语言 · 计算机科学 2025-08-12 Mingzi Cao , Xi Wang , Nikolaos Aletras

Label error is a ubiquitous problem in annotated data. Large amounts of label error substantially degrades the quality of deep learning models. Existing methods to tackle the label error problem largely focus on the classification task, and…

Depth estimation (DE) provides spatial information about a scene and enables tasks such as 3D reconstruction, object detection, and scene understanding. Recently, there has been an increasing interest in using deep learning (DL)-based…

计算机视觉与模式识别 · 计算机科学 2025-01-10 Ali Rohan , Md Junayed Hasan , Andrei Petrovski

This paper presents CLEAR, a retrieval model that seeks to complement classical lexical exact-match models such as BM25 with semantic matching signals from a neural embedding matching model. CLEAR explicitly trains the neural embedding to…

信息检索 · 计算机科学 2021-03-30 Luyu Gao , Zhuyun Dai , Tongfei Chen , Zhen Fan , Benjamin Van Durme , Jamie Callan

In this paper, we propose a novel supervised learning method that is called Deep Embedding Kernel (DEK). DEK combines the advantages of deep learning and kernel methods in a unified framework. More specifically, DEK is a learnable kernel…

机器学习 · 统计学 2018-04-17 Linh Le , Ying Xie

Recent work has shown pre-trained language models capture social biases from the large amounts of text they are trained on. This has attracted attention to developing techniques that mitigate such biases. In this work, we perform an…

计算与语言 · 计算机科学 2022-04-05 Nicholas Meade , Elinor Poole-Dayan , Siva Reddy

Preference alignment in Large Language Models (LLMs) has significantly improved their ability to adhere to human instructions and intentions. However, existing direct alignment algorithms primarily focus on relative preferences and often…

机器学习 · 计算机科学 2025-05-13 Shenao Zhang , Zhihan Liu , Boyi Liu , Yufeng Zhang , Yingxiang Yang , Yongfei Liu , Liyu Chen , Tao Sun , Zhaoran Wang

Deep learning (DL) has shown promise for faster, high quality accelerated MRI reconstruction. However, supervised DL methods depend on extensive amounts of fully-sampled (labeled) data and are sensitive to out-of-distribution (OOD) shifts,…

This paper presents a general scheme for enhancing the convergence and performance of DETR (DEtection TRansformer). We investigate the slow convergence problem in transformers from a new perspective, suggesting that it arises from the…

计算机视觉与模式识别 · 计算机科学 2024-07-17 Xiuquan Hou , Meiqin Liu , Senlin Zhang , Ping Wei , Badong Chen , Xuguang Lan

Differential Evolution (DE) is a renowned optimization stratagem that can easily solve nonlinear and comprehensive problems. DE is a well known and uncomplicated population based probabilistic approach for comprehensive optimization. It has…

神经与进化计算 · 计算机科学 2015-06-22 Sandeep Kumar , Vivek Kumar Sharma , Rajani Kumari

Dense retrievers have made significant strides in text retrieval and open-domain question answering. However, most of these achievements have relied heavily on extensive human-annotated supervision. In this study, we aim to develop…

计算与语言 · 计算机科学 2024-10-31 Rui Meng , Ye Liu , Semih Yavuz , Divyansh Agarwal , Lifu Tu , Ning Yu , Jianguo Zhang , Meghana Bhat , Yingbo Zhou

Recent studies have shown that Dense Retrieval (DR) techniques can significantly improve the performance of first-stage retrieval in IR systems. Despite its empirical effectiveness, the application of DR is still limited. In contrast to…

信息检索 · 计算机科学 2023-04-27 Haitao Li , Qingyao Ai , Jingtao Zhan , Jiaxin Mao , Yiqun Liu , Zheng Liu , Zhao Cao

Bayesian optimization (BO) is a powerful paradigm for optimizing expensive black-box functions. Traditional BO methods typically rely on separate hand-crafted acquisition functions and surrogate models for the underlying function, and often…

机器学习 · 计算机科学 2025-07-10 Fengxue Zhang , Yuxin Chen

The Denoising Autoencoder (DAE) enhances the flexibility of the data stream method in exploiting unlabeled samples. Nonetheless, the feasibility of DAE for data stream analytic deserves an in-depth study because it characterizes a fixed…

机器学习 · 计算机科学 2020-01-10 Andri Ashfahani , Mahardhika Pratama , Edwin Lughofer , Yew Soon Ong

The information retrieval community has made significant progress in improving the efficiency of Dual Encoder (DE) dense passage retrieval systems, making them suitable for latency-sensitive settings. However, many proposed procedures are…

信息检索 · 计算机科学 2023-06-21 Yuxuan Wang , Hong Lyu

Dense object detection is widely used in automatic driving, video surveillance, and other fields. This paper focuses on the challenging task of dense object detection. Currently, detection methods based on greedy algorithms, such as…

计算机视觉与模式识别 · 计算机科学 2025-02-12 Yueming Huang , Chenrui Ma , Hao Zhou , Hao Wu , Guowu Yuan

Building dense retrievers requires a series of standard procedures, including training and validating neural models and creating indexes for efficient search. However, these procedures are often misaligned in that training objectives do not…

计算与语言 · 计算机科学 2022-10-26 Gyuwan Kim , Jinhyuk Lee , Barlas Oguz , Wenhan Xiong , Yizhe Zhang , Yashar Mehdad , William Yang Wang

We present DuPO, a dual learning-based preference optimization framework that generates annotation-free feedback via a generalized duality. DuPO addresses two key limitations: Reinforcement Learning with Verifiable Rewards (RLVR)'s reliance…

机器学习 · 计算机科学 2025-08-21 Shuaijie She , Yu Bao , Yu Lu , Lu Xu , Tao Li , Wenhao Zhu , Shujian Huang , Shanbo Cheng , Lu Lu , Yuxuan Wang

The generated responses of large language models (LLMs) are often fine-tuned to human preferences through a process called reinforcement learning from human feedback (RLHF). As RLHF relies on a challenging training sequence, whereby a…

机器学习 · 计算机科学 2025-06-10 Xiangkun Hu , Lemin Kong , Tong He , David Wipf

Speculative decoding (SD) accelerates Large Language Model (LLM) generation by using an efficient draft model to propose the next few tokens, which are verified by the LLM in a single forward call, reducing latency while preserving its…

计算与语言 · 计算机科学 2025-05-30 Milan Gritta , Huiyin Xue , Gerasimos Lampouras