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Making accurate forecasts for a complex system is a challenge in various practical applications. The major difficulty in solving such a problem concerns nonlinear spatiotemporal dynamics with time-varying characteristics. Takens' delay…

信号处理 · 电气工程与系统科学 2024-04-09 Hao Peng , Wei Wang , Pei Chen , Rui Liu

Deep reinforcement learning can learn effective policies for a wide range of tasks, but is notoriously difficult to use due to instability and sensitivity to hyperparameters. The reasons for this remain unclear. When using standard…

机器学习 · 计算机科学 2020-03-17 Aviral Kumar , Abhishek Gupta , Sergey Levine

Implicit feedback (e.g., clicks, dwell times, etc.) is an abundant source of data in human-interactive systems. While implicit feedback has many advantages (e.g., it is inexpensive to collect, user centric, and timely), its inherent biases…

信息检索 · 计算机科学 2016-08-17 Thorsten Joachims , Adith Swaminathan , Tobias Schnabel

When labeled data is scarce for a specific target task, transfer learning often offers an effective solution by utilizing data from a related source task. However, when transferring knowledge from a less related source, it may inversely…

机器学习 · 计算机科学 2019-10-08 Zirui Wang , Zihang Dai , Barnabás Póczos , Jaime Carbonell

Imitation learning practitioners have often noted that conditioning policies on previous actions leads to a dramatic divergence between "held out" error and performance of the learner in situ. Interactive approaches can provably address…

机器学习 · 计算机科学 2021-02-12 Jonathan Spencer , Sanjiban Choudhury , Arun Venkatraman , Brian Ziebart , J. Andrew Bagnell

Controllable generation through Stable Diffusion (SD) fine-tuning aims to improve fidelity, safety, and alignment with human guidance. Existing reinforcement learning from human feedback methods usually rely on predefined heuristic reward…

In text-to-image (T2I) generation applications, negative embeddings have proven to be a simple yet effective approach for enhancing generation quality. Typically, these negative embeddings are derived from user-defined negative prompts,…

计算机视觉与模式识别 · 计算机科学 2025-06-24 Xiaomin Li , Yixuan Liu , Takashi Isobe , Xu Jia , Qinpeng Cui , Dong Zhou , Dong Li , You He , Huchuan Lu , Zhongdao Wang , Emad Barsoum

Denoising diffusion models have emerged as a dominant approach for image generation, however they still suffer from slow convergence in training and color shift issues in sampling. In this paper, we identify that these obstacles can be…

计算机视觉与模式识别 · 计算机科学 2024-08-06 Hu Yu , Li Shen , Jie Huang , Hongsheng Li , Feng Zhao

In standard reinforcement learning settings, agents typically assume immediate feedback about the effects of their actions after taking them. However, in practice, this assumption may not hold true due to physical constraints and can…

机器学习 · 计算机科学 2024-06-27 Armin Karamzade , Kyungmin Kim , Montek Kalsi , Roy Fox

Deep learning has played a significant role in the success of facial expression recognition (FER), thanks to large models and vast amounts of labelled data. However, obtaining labelled data requires a tremendous amount of human effort,…

计算机视觉与模式识别 · 计算机科学 2023-07-07 Shuvendu Roy , Ali Etemad

In the realm of online advertising, accurately predicting the conversion rate (CVR) is crucial for enhancing advertising efficiency and user satisfaction. This paper addresses the challenge of CVR prediction while adhering to user privacy…

机器学习 · 计算机科学 2025-05-22 Kungang Li , Xiangyi Chen , Ling Leng , Jiajing Xu , Jiankai Sun , Behnam Rezaei

Diffusion models have emerged as a key pillar of foundation models in visual domains. One of their critical applications is to universally solve different downstream inverse tasks via a single diffusion prior without re-training for each…

机器学习 · 计算机科学 2023-10-03 Morteza Mardani , Jiaming Song , Jan Kautz , Arash Vahdat

Contextual biasing enables speech recognizers to transcribe important phrases in the speaker's context, such as contact names, even if they are rare in, or absent from, the training data. Attention-based biasing is a leading approach which…

Accurate delay models are important for static and dynamic timing analysis of digital circuits, and mandatory for formal verification. However, F\"ugger et al. [IEEE TC 2016] proved that pure and inertial delays, which are employed for…

其他计算机科学 · 计算机科学 2021-12-08 Matthias Függer , Jürgen Maier , Robert Najvirt , Thomas Nowak , Ulrich Schmid

Most change detection models based on vision transformers currently follow a "pretraining then fine-tuning" strategy. This involves initializing the model weights using large scale classification datasets, which can be either natural images…

计算机视觉与模式识别 · 计算机科学 2023-12-11 Yang Zhao , Yuxiang Zhang , Yanni Dong , Bo Du

Denoising Diffusion Probabilistic Models have shown an impressive generation quality, although their long sampling chain leads to high computational costs. In this paper, we observe that a long sampling chain also leads to an error…

机器学习 · 计算机科学 2023-06-21 Mang Ning , Enver Sangineto , Angelo Porrello , Simone Calderara , Rita Cucchiara

The negative sampling strategy can effectively train collaborative filtering (CF) recommendation models based on implicit feedback by constructing positive and negative samples. However, existing methods primarily optimize the negative…

信息检索 · 计算机科学 2026-02-27 Jiayi Wu , Zhengyu Wu , Xunkai Li , Rong-Hua Li , Guoren Wang

Programming robots to perform complex tasks is often difficult and time consuming, requiring expert knowledge and skills in robot software and sometimes hardware. Imitation learning is a method for training robots to perform tasks by…

机器人学 · 计算机科学 2026-03-30 John Bateman , Andy M. Tyrrell , Jihong Zhu

Neural ranking models (NRMs) have become one of the most important techniques in information retrieval (IR). Due to the limitation of relevance labels, the training of NRMs heavily relies on negative sampling over unlabeled data. In general…

信息检索 · 计算机科学 2022-09-13 Yinqiong Cai , Jiafeng Guo , Yixing Fan , Qingyao Ai , Ruqing Zhang , Xueqi Cheng

This paper enhances the feedback linearization controller for multirotors with a learned acceleration error model and a thrust input delay mitigation model. Feedback linearization controllers are theoretically appealing but their…

机器人学 · 计算机科学 2021-12-15 Alexander Spitzer , Nathan Michael