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Crowdfunding has emerged as a widespread strategy for startups seeking financing, particularly through reward-based methods. However, understanding its economic impact at both micro and macro levels requires thorough analysis, often…

分布式、并行与集群计算 · 计算机科学 2024-02-23 Giuseppe Pipitò , Emanuele Macca

Direct Preference Optimization (DPO) is a simple and efficient framework that has attracted substantial attention. However, it often struggles to meet its primary objectives -- increasing the generation probability of chosen responses while…

人工智能 · 计算机科学 2025-06-17 Jay Hyeon Cho , JunHyeok Oh , Myunsoo Kim , Byung-Jun Lee

While preference optimization is crucial for improving visual generative models, how to effectively scale this paradigm remains largely unexplored. Current open-source preference datasets contain conflicting preference patterns, where…

计算机视觉与模式识别 · 计算机科学 2026-04-30 Ming Li , Jie Wu , Justin Cui , Xiaojie Li , Rui Wang , Chen Chen

This article aims to reduce huge pilot overhead when estimating the reconfigurable intelligent surface (RIS) relayed wireless channel. Motivated by the compelling grasp of deep learning in tackling nonlinear mapping problems, the proposed…

信号处理 · 电气工程与系统科学 2021-04-26 Shen Gao , Peihao Dong , Zhiwen Pan , Geoffrey Ye Li

Aligning large language models with human preferences is essential for improving interaction quality and safety by ensuring outputs better reflect human values. A promising strategy involves Reinforcement Learning from Human Feedback…

信息检索 · 计算机科学 2025-12-17 Jiacong Zhou , Xianyun Wang , Min Zhang , Jun Yu

Latent reasoning has emerged as a promising paradigm for sequential recommendation, enabling models to capture complex user intent through multi-step deliberation. Yet existing approaches often rely on deterministic latent chains that…

信息检索 · 计算机科学 2026-02-13 Jie Jiang , Yang Wu , Qian Li , Yuling Xiong , Yihang Su , Junbang Huo , Longfei Lu , Jun Zhang , Huan Yu

An internet network service provider manages its network with multiple objectives, such as high quality of service (QoS) and minimum computing resource usage. To achieve these objectives, a reinforcement learning-based (RL) algorithm has…

网络与互联网体系结构 · 计算机科学 2025-06-17 DongNyeong Heo , Daniela Noemi Rim , Heeyoul Choi

Real-world recommendation systems often consist of two phases. In the first phase, multiple predictive models produce the probability of different immediate user actions. In the second phase, these predictions are aggregated according to a…

RL-based techniques can be employed to search for prompts that, when fed into a target language model, maximize a set of user-specified reward functions. However, in many target applications, the natural reward functions are in tension with…

计算与语言 · 计算机科学 2025-06-10 Yasaman Jafari , Dheeraj Mekala , Rose Yu , Taylor Berg-Kirkpatrick

With the rapid development of Deep Learning, more and more applications on the cloud and edge tend to utilize large DNN (Deep Neural Network) models for improved task execution efficiency as well as decision-making quality. Due to memory…

机器学习 · 计算机科学 2024-07-02 Jingran Shen , Nikos Tziritas , Georgios Theodoropoulos

Recent years have witnessed growing interest in the application of deep neural networks (DNNs) for receiver design, which can potentially be applied in complex environments without relying on knowledge of the channel model. However, the…

信息论 · 计算机科学 2023-02-14 Tomer Raviv , Sangwoo Park , Osvaldo Simeone , Yonina C. Eldar , Nir Shlezinger

Scaling deep learning recommendation models is an effective way to improve model expressiveness. Existing approaches often incur substantial computational overhead, making them difficult to deploy in large-scale industrial systems under…

The unprecedented performance of deep neural networks (DNNs) has led to large strides in various Artificial Intelligence (AI) inference tasks, such as object and speech recognition. Nevertheless, deploying such AI models across commodity…

机器学习 · 计算机科学 2021-06-30 Stylianos I. Venieris , Ioannis Panopoulos , Ilias Leontiadis , Iakovos S. Venieris

Multimodal reward models (MRMs) play a crucial role in aligning Multimodal Large Language Models (MLLMs) with human preferences. Training a good MRM requires high-quality multimodal preference data. However, existing preference datasets…

人工智能 · 计算机科学 2026-04-22 Zhihong Zhang , Jie Zhao , Xiaojian Huang , Jin Xu , Zhuodong Luo , Xin Liu , Jiansheng Wei , Xuejin Chen

Learning control policies to perform complex robotics tasks from human preference data presents significant challenges. On the one hand, the complexity of such tasks typically requires learning policies to perform a variety of subtasks,…

In today's economy, it becomes important for Internet platforms to consider the sequential information design problem to align its long term interest with incentives of the gig service providers. This paper proposes a novel model of…

人工智能 · 计算机科学 2022-02-23 Jibang Wu , Zixuan Zhang , Zhe Feng , Zhaoran Wang , Zhuoran Yang , Michael I. Jordan , Haifeng Xu

Deep Research agents tackle knowledge-intensive tasks through multi-round retrieval and decision-oriented generation. While reinforcement learning (RL) has been shown to improve performance in this paradigm, its contributions remain…

计算与语言 · 计算机科学 2026-02-24 Yinuo Xu , Shuo Lu , Jianjie Cheng , Meng Wang , Qianlong Xie , Xingxing Wang , Ran He , Jian Liang

The goal of person search is to localize and match query persons from scene images. For high efficiency, one-step methods have been developed to jointly handle the pedestrian detection and identification sub-tasks using a single network.…

计算机视觉与模式识别 · 计算机科学 2021-02-23 Chuchu Han , Zhedong Zheng , Changxin Gao , Nong Sang , Yi Yang

We present new algorithms for Personalized PageRank estimation and Personalized PageRank search. First, for the problem of estimating Personalized PageRank (PPR) from a source distribution to a target node, we present a new bidirectional…

数据结构与算法 · 计算机科学 2015-12-16 Peter Lofgren , Siddhartha Banerjee , Ashish Goel

Social agents powered by large language models (LLMs) can simulate human social behaviors but fall short in handling complex social dialogues. Direct Preference Optimization (DPO) has proven effective in aligning LLM behavior with human…

人工智能 · 计算机科学 2025-02-28 Aobo Kong , Wentao Ma , Shiwan Zhao , Yongbin Li , Yuchuan Wu , Ke Wang , Xiaoqian Liu , Qicheng Li , Yong Qin , Fei Huang