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Domain reweighting is an emerging research area aimed at adjusting the relative weights of different data sources to improve the effectiveness and efficiency of LLM pre-training. We show that data mixtures that perform well at smaller…

机器学习 · 计算机科学 2025-10-03 Feiyang Kang , Yifan Sun , Bingbing Wen , Si Chen , Dawn Song , Rafid Mahmood , Ruoxi Jia

Crowd counting is the task of estimating people numbers in crowd images. Modern crowd counting methods employ deep neural networks to estimate crowd counts via crowd density regressions. A major challenge of this task lies in the…

计算机视觉与模式识别 · 计算机科学 2019-04-02 Miaojing Shi , Zhaohui Yang , Chao Xu , Qijun Chen

Density-based spatial clustering of applications with noise (DBSCAN) is a data clustering algorithm which has the high-performance rate for dataset where clusters have the constant density of data points. One of the significant attributes…

In recent years, with the progress of deep learning technologies, crowd counting has been rapidly developed. In this work, we propose a simple yet effective crowd counting framework that is able to achieve the state-of-the-art performance…

计算机视觉与模式识别 · 计算机科学 2020-06-16 Yue Gu , Wenxi Liu

Crowd localization plays a crucial role in visual scene understanding towards predicting each pedestrian location in a crowd, thus being applicable to various downstream tasks. However, existing approaches suffer from significant…

计算机视觉与模式识别 · 计算机科学 2025-10-23 Juncheng Wang , Lei Shang , Ziqi Liu , Wang Lu , Xixu Hu , Zhe Hu , Jindong Wang , Shujun Wang

Fully-supervised crowd counting is a laborious task due to the large amounts of annotations. Few works focus on weekly-supervised crowd counting, where only the global crowd numbers are available for training. The main challenge of…

计算机视觉与模式识别 · 计算机科学 2022-02-23 Xiaoshuang Chen , Hongtao Lu

State-of-the-art methods for counting people in crowded scenes rely on deep networks to estimate crowd density in the image plane. While useful for this purpose, this image-plane density has no immediate physical meaning because it is…

计算机视觉与模式识别 · 计算机科学 2019-07-19 Weizhe Liu , Krzysztof Lis , Mathieu Salzmann , Pascal Fua

Modern methods for counting people in crowded scenes rely on deep networks to estimate people densities in individual images. As such, only very few take advantage of temporal consistency in video sequences, and those that do only impose…

计算机视觉与模式识别 · 计算机科学 2021-08-04 Weizhe Liu , Mathieu Salzmann , Pascal Fua

Current crowd counting algorithms are only concerned about the number of people in an image, which lacks low-level fine-grained information of the crowd. For many practical applications, the total number of people in an image is not as…

计算机视觉与模式识别 · 计算机科学 2021-02-24 Jia Wan , Nikil Senthil Kumar , Antoni B. Chan

We propose the DPSM method, a density-based node clustering approach that automatically determines the number of clusters and can be applied in both data space and graph space. Unlike traditional density-based clustering methods, which…

机器学习 · 计算机科学 2024-11-05 Feiping Nie , Yitao Song , Jingjing Xue , Rong Wang , Xuelong Li

Image clustering is a very useful technique that is widely applied to various areas, including remote sensing. Recently, visual representations by self-supervised learning have greatly improved the performance of image clustering. To…

计算机视觉与模式识别 · 计算机科学 2022-09-27 Qinglin Li , Guoping Qiu

Density map is an effective visualization technique for depicting the scalar field distribution in 2D space. Conventional methods for constructing density maps are mainly based on Euclidean distance, limiting their applicability in urban…

人机交互 · 计算机科学 2021-03-08 Zezheng Feng , Haotian Li , Wei Zeng , Shuang-Hua Yang , Huamin Qu

Most existing crowd counting methods require object location-level annotation, i.e., placing a dot at the center of an object. While being simpler than the bounding-box or pixel-level annotation, obtaining this annotation is still…

计算机视觉与模式识别 · 计算机科学 2020-03-03 Yinjie Lei , Yan Liu , Pingping Zhang , Lingqiao Liu

Crowd density estimation is an important task for crowd monitoring. Many efforts have been done to automate the process of estimating crowd density from images and videos. Despite series of efforts, it remains a challenging task. In this…

计算机视觉与模式识别 · 计算机科学 2019-05-16 Adwan Alownie Alanazi , Muhammad Bilal

Crowd instance segmentation is a crucial task with a wide range of applications, including surveillance and transportation. Currently, point labels are common in crowd datasets, while region labels (e.g., boxes) are rare and inaccurate. The…

计算机视觉与模式识别 · 计算机科学 2026-04-03 Hongru Chen , Jiyang Huang , Jia Wan , Antoni B. Chan

Fine resolution estimates of demographic and socioeconomic attributes are crucial for planning and policy development. While several efforts have been made to produce fine-scale gridded population estimates, socioeconomic features are…

Interactive visualization of embedding projections is a useful technique for understanding data and evaluating machine learning models. Labeling data within these visualizations is critical for interpretation, as labels provide an overview…

人机交互 · 计算机科学 2025-05-20 Donghao Ren , Fred Hohman , Dominik Moritz

In this paper, we tackle the problem of Crowd Counting, and present a crowd density estimation based approach for obtaining the crowd count. Most of the existing crowd counting approaches rely on local features for estimating the crowd…

计算机视觉与模式识别 · 计算机科学 2019-04-08 Viresh Ranjan , Mubarak Shah , Minh Hoai Nguyen

In real-world crowd counting applications, the crowd densities vary greatly in spatial and temporal domains. A detection based counting method will estimate crowds accurately in low density scenes, while its reliability in congested areas…

计算机视觉与模式识别 · 计算机科学 2018-03-08 Jiang Liu , Chenqiang Gao , Deyu Meng , Alexander G. Hauptmann

High resolution datasets of population density which accurately map sparsely-distributed human populations do not exist at a global scale. Typically, population data is obtained using censuses and statistical modeling. More recently,…