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A deep-learning-based hybrid strategy for short-term load forecasting is presented. The strategy proposes a novel tree-based ensemble method Warm-start Gradient Tree Boosting (WGTB). Current strategies either ensemble submodels of a single…

机器学习 · 计算机科学 2020-12-08 Yuexin Zhang , Jiahong Wang

Random Forests (RF) are among the most powerful and widely used predictive models for centralized tabular data, yet few methods exist to adapt them to the federated learning setting. Unlike most federated learning approaches, the…

机器学习 · 统计学 2026-05-08 Rémi Khellaf , Erwan Scornet , Aurélien Bellet , Julie Josse

We propose two frameworks to deal with problem settings in which both structured and unstructured data are available. Structured data problems are best solved by traditional machine learning models such as boosting and tree-based…

机器学习 · 计算机科学 2023-03-01 Andrea Treviño Gavito , Diego Klabjan , Jean Utke

Gradient Boosted Decision Trees (GBDT) is a very successful ensemble learning algorithm widely used across a variety of applications. Recently, several variants of GBDT training algorithms and implementations have been designed and heavily…

机器学习 · 计算机科学 2019-06-27 Yu Shi , Jian Li , Zhize Li

The success of deep neural networks has inspired many to wonder whether other learners could benefit from deep, layered architectures. We present a general framework called forward thinking for deep learning that generalizes the…

机器学习 · 统计学 2017-05-23 Kevin Miller , Chris Hettinger , Jeffrey Humpherys , Tyler Jarvis , David Kartchner

Deep Neural Networks (DNN) have demonstrated superior ability to extract high level embedding vectors from low level features. Despite the success, the serving time is still the bottleneck due to expensive run-time computation of multiple…

机器学习 · 计算机科学 2017-03-16 Jie Zhu , Ying Shan , JC Mao , Dong Yu , Holakou Rahmanian , Yi Zhang

In a modern power system, real-time data on power generation/consumption and its relevant features are stored in various distributed parties, including household meters, transformer stations and external organizations. To fully exploit the…

机器学习 · 计算机科学 2022-01-11 Haizhou Liu , Xuan Zhang , Xinwei Shen , Hongbin Sun

We propose an unsupervised tree boosting algorithm for inferring the underlying sampling distribution of an i.i.d. sample based on fitting additive tree ensembles in a fashion analogous to supervised tree boosting. Integral to the algorithm…

统计方法学 · 统计学 2023-07-11 Naoki Awaya , Li Ma

In this paper we propose a method to build a neural network that is similar to an ensemble of decision trees. We first illustrate how to convert a learned ensemble of decision trees to a single neural network with one hidden layer and an…

机器学习 · 计算机科学 2019-11-07 Mohammad Saberian , Pablo Delgado , Yves Raimond

Stochastic gradient descent (SGD) has been the dominant optimization method for training deep neural networks due to its many desirable properties. One of the more remarkable and least understood quality of SGD is that it generalizes…

机器学习 · 计算机科学 2020-07-03 Erhan Bilal

While deep learning has enabled tremendous progress on text and image datasets, its superiority on tabular data is not clear. We contribute extensive benchmarks of standard and novel deep learning methods as well as tree-based models such…

机器学习 · 计算机科学 2022-07-20 Léo Grinsztajn , Edouard Oyallon , Gaël Varoquaux

Neural networks have proved to be very robust at processing unstructured data like images, text, videos, and audio. However, it has been observed that their performance is not up to the mark in tabular data; hence tree-based models are…

机器学习 · 计算机科学 2022-04-25 Tushar Sarkar

A novel graph-to-tree conversion mechanism called the deep-tree generation (DTG) algorithm is first proposed to predict text data represented by graphs. The DTG method can generate a richer and more accurate representation for nodes (or…

计算与语言 · 计算机科学 2018-09-06 Fenxiao Chen , Bin Wang , C. -C. Jay Kuo

We focus on generative AI for a type of data that still represent one of the most prevalent form of data: tabular data. Our paper introduces two key contributions: a new powerful class of forest-based models fit for such tasks and a simple…

机器学习 · 计算机科学 2024-11-15 Richard Nock , Mathieu Guillame-Bert

Tree ensemble models like random forests and gradient boosting machines are widely used in machine learning due to their excellent predictive performance. However, a high-performance ensemble consisting of a large number of decision trees…

机器学习 · 统计学 2024-10-28 Zebin Yang , Agus Sudjianto , Xiaoming Li , Aijun Zhang

TF Boosted Trees (TFBT) is a new open-sourced frame-work for the distributed training of gradient boosted trees. It is based on TensorFlow, and its distinguishing features include a novel architecture, automatic loss differentiation,…

Tabular data is hard to acquire and is subject to missing values. This paper introduces a novel approach for generating and imputing mixed-type (continuous and categorical) tabular data utilizing score-based diffusion and conditional flow…

机器学习 · 计算机科学 2024-02-21 Alexia Jolicoeur-Martineau , Kilian Fatras , Tal Kachman

Decision Trees (DTs) are commonly used for many machine learning tasks due to their high degree of interpretability. However, learning a DT from data is a difficult optimization problem, as it is non-convex and non-differentiable.…

机器学习 · 计算机科学 2024-08-20 Sascha Marton , Stefan Lüdtke , Christian Bartelt , Heiner Stuckenschmidt

Gradient boosted decision trees are a popular machine learning technique, in part because of their ability to give good accuracy with small models. We describe two extensions to the standard tree boosting algorithm designed to increase this…

机器学习 · 统计学 2017-11-01 Natalia Ponomareva , Thomas Colthurst , Gilbert Hendry , Salem Haykal , Soroush Radpour

Boosting is a method for finding a highly accurate hypothesis by linearly combining many ``weak" hypotheses, each of which may be only moderately accurate. Thus, boosting is a method for learning an ensemble of classifiers. While boosting…

机器学习 · 计算机科学 2021-07-30 Sai Saketh Rambhatla , Michael Jones , Rama Chellappa