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Gradient-boosted trees achieve strong performance on tabular data, yet often leave a long tail of poorly predicted instances. We introduce a Trajectory-based Difficulty Score (TDS), an instance-level difficulty estimator for boosted…

机器学习 · 计算机科学 2026-05-26 Tomer Lavi , Bracha Shapira , Nadav Rappoport

A large number of explicit estimators are proposed in this paper for loss rate estimation in a network of the tree topology. All of the estimators are proved to be unbiased and consistent instead of asymptotic unbiased as that obtained in…

信息论 · 计算机科学 2015-08-06 Weiping Zhu

Nowadays, there are many approaches to acquire three-dimensional (3D) point clouds of maize plants. However, automatic stem-leaf segmentation of maize shoots from three-dimensional (3D) point clouds remains challenging, especially for new…

计算机视觉与模式识别 · 计算机科学 2020-09-08 Chao Zhu , Teng Miao , Tongyu Xu , Tao Yang , Na Li

Within the domain of medical image analysis, three distinct methodologies have demonstrated commendable accuracy: Neural Networks, Decision Trees, and Ensemble-Based Learning Algorithms, particularly in the specialized context of genstro…

计算机视觉与模式识别 · 计算机科学 2025-10-14 Zeshan Khan

The collection of ecological data in the field is essential to diagnose, monitor and manage ecosystems in a sustainable way. Since acquisition of this information through traditional methods are generally time-consuming, due to the…

计算机视觉与模式识别 · 计算机科学 2024-01-12 Ion Ciobotari , Adriana Príncipe , Maria Alexandra Oliveira , João Nuno Silva

We propose a tree ensemble method, referred to as time series forest (TSF), for time series classification. TSF employs a combination of the entropy gain and a distance measure, referred to as the Entrance (entropy and distance) gain, for…

机器学习 · 计算机科学 2013-06-04 Houtao Deng , George Runger , Eugene Tuv , Martyanov Vladimir

We present a simple, efficient model for learning boundary detection based on a random forest classifier. Our approach combines (1) efficient clustering of training examples based on simple partitioning of the space of local edge…

计算机视觉与模式识别 · 计算机科学 2015-06-30 Sam Hallman , Charless C. Fowlkes

Extracting high-level structural information from 3D point clouds is challenging but essential for tasks like urban planning or autonomous driving requiring an advanced understanding of the scene at hand. Existing approaches are still not…

计算机视觉与模式识别 · 计算机科学 2022-10-25 Lukas Bode , Michael Weinmann , Reinhard Klein

In recent years, point cloud representation has become one of the research hotspots in the field of computer vision, and has been widely used in many fields, such as autonomous driving, virtual reality, robotics, etc. Although deep learning…

计算机视觉与模式识别 · 计算机科学 2023-11-07 Huang Zhang , Changshuo Wang , Shengwei Tian , Baoli Lu , Liping Zhang , Xin Ning , Xiao Bai

Plane detection in 3D point clouds is a crucial pre-processing step for applications such as point cloud segmentation, semantic mapping and SLAM. In contrast to many recent plane detection methods that are only applicable on organized point…

计算机视觉与模式识别 · 计算机科学 2019-05-08 Bo Sun , Philippos Mordohai

In this paper, we propose a point cloud classification method based on graph neural network and manifold learning. Different from the conventional point cloud analysis methods, this paper uses manifold learning algorithms to embed point…

计算机视觉与模式识别 · 计算机科学 2020-10-19 Dinghao Yang , Wei Gao

Lidar datasets are becoming more and more common. They are appreciated for their precise 3D nature, and have a wide range of applications, such as surface reconstruction, object detection, visualisation, etc. For all this applications,…

计算机视觉与模式识别 · 计算机科学 2018-01-17 Remi Cura , Julien Perret , Nicolas Paparoditis

Fire patterns, consisting of fire effects that offer insights into fire behavior and origin, are traditionally classified based on investigators' visual observations, leading to subjective interpretations. This study proposes a framework…

计算机视觉与模式识别 · 计算机科学 2025-04-11 Pengkun Liu , Shuna Ni , Stanislav I. Stoliarov , Pingbo Tang

Hypergraph spectral analysis has emerged as an effective tool processing complex data structures in data analysis. The surface of a three-dimensional (3D) point cloud and the multilateral relationship among their points can be naturally…

信号处理 · 电气工程与系统科学 2021-01-01 Songyang Zhang , Shuguang Cui , Zhi Ding

Edge detection is a critical component of many vision systems, including object detectors and image segmentation algorithms. Patches of edges exhibit well-known forms of local structure, such as straight lines or T-junctions. In this paper…

计算机视觉与模式识别 · 计算机科学 2014-11-26 Piotr Dollár , C. Lawrence Zitnick

Using 3D point clouds in odometry estimation in robotics often requires finding a set of correspondences between points in subsequent scans. While there are established methods for point clouds of sufficient quality, state-of-the-art still…

机器人学 · 计算机科学 2025-06-24 Jan Michalczyk , Stephan Weiss , Jan Steinbrener

Dynamic regression trees are an attractive option for automatic regression and classification with complicated response surfaces in on-line application settings. We create a sequential tree model whose state changes in time with the…

统计方法学 · 统计学 2010-11-23 Matthew A. Taddy , Robert B. Gramacy , Nicholas G. Polson

Quantification of forest biomass stocks and their dynamics is important for implementing effective climate change mitigation measures. The knowledge is needed, e.g., for local forest management, studying the processes driving af-, re-, and…

计算机视觉与模式识别 · 计算机科学 2023-02-23 Stefan Oehmcke , Lei Li , Katerina Trepekli , Jaime Revenga , Thomas Nord-Larsen , Fabian Gieseke , Christian Igel

Deep convolutional neural networks have shown high efficiency in computer visions and other applications. However, with the increase in the depth of the networks, the computational complexity is growing exponentially. In this paper, we…

机器学习 · 计算机科学 2021-01-08 Ali Mirzaeian , Sai Manoj , Ashkan Vakil , Houman Homayoun , Avesta Sasan

We present sparse tree-based and list-based density estimation methods for binary/categorical data. Our density estimation models are higher dimensional analogies to variable bin width histograms. In each leaf of the tree (or list), the…

机器学习 · 统计学 2023-11-16 Siong Thye Goh , Lesia Semenova , Cynthia Rudin