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Computing an optimal classification tree that provably maximizes training performance within a given size limit, is NP-hard, and in practice, most state-of-the-art methods do not scale beyond computing optimal trees of depth three.…

机器学习 · 计算机科学 2025-01-15 Catalin E. Brita , Jacobus G. M. van der Linden , Emir Demirović

Without access to large compute clusters, building random forests on large datasets is still a challenging problem. This is, in particular, the case if fully-grown trees are desired. We propose a simple yet effective framework that allows…

机器学习 · 计算机科学 2018-02-20 Fabian Gieseke , Christian Igel

Decision trees are widely adopted machine learning models due to their simplicity and explainability. However, as training data size grows, standard methods become increasingly slow, scaling polynomially with the number of training…

量子物理 · 物理学 2025-01-23 Niraj Kumar , Romina Yalovetzky , Changhao Li , Pierre Minssen , Marco Pistoia

In the past several years a wide range of methods for the construction of regression trees and other estimators based on the recursive partitioning of samples have appeared in the statistics literature. Many applications involve data…

统计方法学 · 统计学 2014-07-07 Daniell Toth , John Eltinge

The election is a classical problem in distributed algorithmic. It aims to design and to analyze a distributed algorithm choosing a node in a graph, here, in a tree. In this paper, a class of randomized algorithms for the election is…

分布式、并行与集群计算 · 计算机科学 2015-07-20 Jean-François Marckert , Nasser Saheb-Djahromi , Akka Zemmari

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

The decision tree recursively partitions the input space into regions and derives axis-aligned decision boundaries from data. Despite its simplicity and interpretability, decision trees lack parameterized representation, which makes it…

机器学习 · 计算机科学 2024-11-19 Jinxiong Zhang

Tree-based machine learning techniques, such as Decision Trees and Random Forests, are top performers in several domains as they do well with limited training datasets and offer improved interpretability compared to Deep Neural Networks…

Decision Trees and Random Forests are among the most widely used machine learning models, and often achieve state-of-the-art performance in tabular, domain-agnostic datasets. Nonetheless, being primarily discriminative models they lack…

机器学习 · 统计学 2020-07-14 Alvaro H. C. Correia , Robert Peharz , Cassio de Campos

Existing ordinal trees and random forests typically use scores that are assigned to the ordered categories, which implies that a higher scale level is used. Versions of ordinal trees are proposed that take the scale level seriously and…

统计方法学 · 统计学 2021-02-02 Gerhard Tutz

Survival analysis studies and predicts the time of death, or other singular unrepeated events, based on historical data, while the true time of death for some instances is unknown. Survival trees enable the discovery of complex nonlinear…

机器学习 · 计算机科学 2024-01-10 Tim Huisman , Jacobus G. M. van der Linden , Emir Demirović

Tree-based priors for probability distributions are usually specified using a predetermined, data-independent collection of candidate recursive partitions of the sample space. To characterize an unknown target density in detail over the…

统计方法学 · 统计学 2025-04-14 Li Ma , Benedetta Bruni

In this paper we consider two continuous-mass population models as analogues of logistic branching random walks, one is supported on a finite trait space and the other one is supported on an infinite trait space. For the first model with…

概率论 · 数学 2013-04-18 Anton Bovier , Shi-Dong Wang

We give the first algorithm that maintains an approximate decision tree over an arbitrary sequence of insertions and deletions of labeled examples, with strong guarantees on the worst-case running time per update request. For instance, we…

数据结构与算法 · 计算机科学 2023-02-13 Marco Bressan , Mauro Sozio

We study the asymptotic behavior of the maximum degree in the evolving tree model with a choice based on both degree and fitness of a vertex. The tree is constructed in the following recursive way. Each vertex is assigned a parameter to it…

概率论 · 数学 2020-12-15 Yury Malyshkin

In a co-evolutionary context, the survive probability of individual elements of a system depends on their relation with their neighbors. The natural selection process depends on the whole population, which is determined by local events…

生物物理 · 物理学 2009-11-13 Juan G. Diaz Ochoa

We study the growth of a time-ordered rooted tree by probabilistic attachment of new vertices to leaves. We construct a likelihood function of the leaves based on the connectivity of the tree. We take such connectivity to be induced by the…

数据结构与算法 · 计算机科学 2020-11-03 Nomvelo Sibisi

We consider a fitness-structured population model with competition and migration between nearest neighbors. Under a combination of large population and rare migration limits we are particularly interested in the asymptotic behavior of the…

概率论 · 数学 2012-07-20 Anton Bovier , Shi-Dong Wang

We derive and analyze a generic, recursive algorithm for estimating all splits in a finite cluster tree as well as the corresponding clusters. We further investigate statistical properties of this generic clustering algorithm when it…

机器学习 · 统计学 2021-11-02 Ingo Steinwart , Bharath K. Sriperumbudur , Philipp Thomann

We address the problem of learning binary decision trees that partition data for some downstream task. We propose to learn discrete parameters (i.e., for tree traversals and node pruning) and continuous parameters (i.e., for tree split…

机器学习 · 计算机科学 2021-06-15 Valentina Zantedeschi , Matt J. Kusner , Vlad Niculae