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Learning to Optimize (LtO) is a problem setting in which a machine learning (ML) model is trained to emulate a constrained optimization solver. Learning to produce optimal and feasible solutions subject to complex constraints is a difficult…

机器学习 · 计算机科学 2024-03-18 James Kotary , Ferdinando Fioretto

Technology and collaboration enable dramatic increases in the size of psychological and psychiatric data collections, but finding structure in these large data sets with many collected variables is challenging. Decision tree ensembles like…

机器学习 · 统计学 2017-02-15 Patrick J. Miller , Gitta H. Lubke , Daniel B. McArtor , C. S. Bergeman

The gradient boosting machine is one of the powerful tools for solving regression problems. In order to cope with its shortcomings, an approach for constructing ensembles of gradient boosting models is proposed. The main idea behind the…

机器学习 · 计算机科学 2020-10-14 Andrei V. Konstantinov , Lev V. Utkin

We propose a tree-based algorithm for classification and regression problems in the context of functional data analysis, which allows to leverage representation learning and multiple splitting rules at the node level, reducing…

机器学习 · 统计学 2020-11-03 Edoardo Belli , Simone Vantini

Although binary classification is a well-studied problem in computer vision, training reliable classifiers under severe class imbalance remains a challenging problem. Recent work has proposed techniques that mitigate the effects of training…

机器学习 · 计算机科学 2024-06-06 Kelsey Lieberman , Shuai Yuan , Swarna Kamlam Ravindran , Carlo Tomasi

It is not uncommon that real-world data are distributed with a long tail. For such data, the learning of deep neural networks becomes challenging because it is hard to classify tail classes correctly. In the literature, several existing…

计算机视觉与模式识别 · 计算机科学 2024-07-19 Mengke Li , Yiu-ming Cheung , Yang Lu , Zhikai Hu , Weichao Lan , Hui Huang

Wepresentanovelcolumngenerationbasedboostingmethod for multi-class classification. Our multi-class boosting is formulated in a single optimization problem as in Shen and Hao (2011). Different from most existing multi-class boosting methods,…

计算机视觉与模式识别 · 计算机科学 2013-11-26 Guosheng Lin , Chunhua Shen , Anton van den Hengel , David Suter

Gradient boosting of prediction rules is an efficient approach to learn potentially interpretable yet accurate probabilistic models. However, actual interpretability requires to limit the number and size of the generated rules, and existing…

机器学习 · 计算机科学 2024-02-27 Fan Yang , Pierre Le Bodic , Michael Kamp , Mario Boley

We consider multi-class classification where the predictor has a hierarchical structure that allows for a very large number of labels both at train and test time. The predictive power of such models can heavily depend on the structure of…

机器学习 · 统计学 2017-03-06 Yacine Jernite , Anna Choromanska , David Sontag

We present an application of a particular machine-learning method (Boosted Decision Trees, BDTs using AdaBoost) to separate stars and galaxies in photometric images using their catalog characteristics. BDTs are a well established machine…

天体物理仪器与方法 · 物理学 2015-04-28 Ignacio Sevilla-Noarbe , Penélope Etayo-Sotos

Well-known for its simplicity and effectiveness in classification, AdaBoost, however, suffers from overfitting when class-conditional distributions have significant overlap. Moreover, it is very sensitive to noise that appears in the…

机器学习 · 统计学 2018-06-22 Zhi Xiao , Zhe Luo , Bo Zhong , Xin Dang

In this paper, we propose a gradient boosting algorithm called \textit{adaptive boosting histogram transform} (\textit{ABHT}) for regression to illustrate the local adaptivity of gradient boosting algorithms in histogram transform ensemble…

机器学习 · 统计学 2021-12-07 Hanyuan Hang

Domain adaptation is to transfer the shared knowledge learned from the source domain to a new environment, i.e., target domain. One common practice is to train the model on both labeled source-domain data and unlabeled target-domain data.…

计算机视觉与模式识别 · 计算机科学 2022-12-13 Zhedong Zheng , Yi Yang

ATPboost is a system for solving sets of large-theory problems by interleaving ATP runs with state-of-the-art machine learning of premise selection from the proofs. Unlike many previous approaches that use multi-label setting, the learning…

人工智能 · 计算机科学 2018-02-12 Bartosz Piotrowski , Josef Urban

Combining the merits of both denoising diffusion probabilistic models and gradient boosting, the diffusion boosting paradigm is introduced for tackling supervised learning problems. We develop Diffusion Boosted Trees (DBT), which can be…

机器学习 · 统计学 2024-06-05 Xizewen Han , Mingyuan Zhou

Tree ensembles such as XGBoost are often preferred for discriminative tasks in mixed-type tabular data, due to their inductive biases, minimal hyperparameter tuning, and training efficiency. We argue that these qualities, when leveraged…

机器学习 · 计算机科学 2026-03-10 Jim Achterberg , Marcel Haas , Bram van Dijk , Marco Spruit

The ratio of two densities provides a direct characterization of their differences. We consider the two-sample comparison problem by estimating this ratio given i.i.d. observations from two distributions. To this end, we propose additive…

统计方法学 · 统计学 2026-04-23 Naoki Awaya , Yuliang Xu , Li Ma

ProBoost, a new boosting algorithm for probabilistic classifiers, is proposed in this work. This algorithm uses the epistemic uncertainty of each training sample to determine the most challenging/uncertain ones; the relevance of these…

Boosting is an extremely successful idea, allowing one to combine multiple low accuracy classifiers into a much more accurate voting classifier. In this work, we present a new and surprisingly simple Boosting algorithm that obtains a…

机器学习 · 计算机科学 2024-09-02 Mikael Møller Høgsgaard , Kasper Green Larsen , Markus Engelund Mathiasen

In recent years, the clandestine nature of darknet activities has presented an escalating challenge to cybersecurity efforts, necessitating sophisticated methods for the detection and classification of network traffic associated with these…

机器学习 · 计算机科学 2024-08-31 Anjali Sureshkumar Nair , Prashant Nitnaware