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Penalized transformation models (PTMs) are a semiparametric location-scale regression family that estimate a response's conditional distribution directly from the data, and model the location and scale through structured additive…

统计方法学 · 统计学 2025-09-22 Johannes Brachem , Paul F. V. Wiemann , Thomas Kneib

Graph learning architectures based on the k-dimensional Weisfeiler-Leman (k-WL) hierarchy offer a theoretically well-understood expressive power. However, such architectures often fail to deliver solid predictive performance on real-world…

机器学习 · 计算机科学 2024-11-11 Luis Müller , Daniel Kusuma , Blai Bonet , Christopher Morris

Variational quantum circuits (VQCs) are a leading approach to quantum machine learning on near-term devices, yet it remains unclear which circuit architecture yields the best accuracy-parameter trade-off on classical tabular data. We…

量子物理 · 物理学 2026-04-28 Chi-Sheng Chen , En-Jui Kuo

State-of-the-art results on neural machine translation often use attentional sequence-to-sequence models with some form of convolution or recursion. Vaswani et al. (2017) propose a new architecture that avoids recurrence and convolution…

人工智能 · 计算机科学 2017-11-08 Karim Ahmed , Nitish Shirish Keskar , Richard Socher

We extend the theory of concentration inequalities to simple random tensors with heavy-tailed coefficients. Specifically, we consider the class of sub-Weibull distributions $\mathcal{S}_\alpha$ for $\alpha \in [1, 2]$. We establish…

数理金融 · 定量金融 2026-03-11 Yunfan Zhao

Rating prediction is a core problem in recommender systems to quantify user's preferences towards items, however, rating imbalance naturally roots in real-world user ratings that cause biased predictions and lead to poor performance on tail…

信息检索 · 计算机科学 2022-08-18 Yuexin Wu , Xiaolei Huang

Geometric Attention (GA) specifies an attention layer by four independent inputs: a finite carrier (what indices are addressable), an evidence-kernel rule (how masked proto-scores and a link induce nonnegative weights), a probe family…

机器学习 · 计算机科学 2026-01-21 Luis Rosario Freytes

We propose a new class of claim severity distributions with six parameters, that has the standard two-parameter distributions, the log-normal, the log-Gamma, the Weibull, the Gamma and the Pareto, as special cases. This distribution is much…

统计方法学 · 统计学 2018-05-29 Erik Bølviken , Ingrid Hobæk Haff

Transformers trained on modular arithmetic exhibit sharp transitions between memorization, generalization, and collapse. We show that weight decay acts as a scalar empirical control parameter for these regimes, and introduce two cheap…

机器学习 · 计算机科学 2026-05-21 Lucky Verma

In engineering systems, it is usually assumed that lifetimes of components are independent and identically distributed (iid). But, the failure of a component results in a higher load on the remaining components and hence causes the…

统计理论 · 数学 2019-12-18 M. Doostparast , M. Hashempour , E. Velayati Moghaddam 1

Stress-strength models are widely used to assess the reliability of systems under uncertain conditions. While most studies assume independence between stress and strength variables, such an assumption may be unrealistic in many practical…

统计方法学 · 统计学 2026-04-15 Fatih Kızılaslan

We propose a new class of discrete generalized linear models based on the class of Poisson-Tweedie factorial dispersion models with variance of the form $\mu + \phi\mu^p$, where $\mu$ is the mean, $\phi$ and $p$ are the dispersion and…

In this article, we consider statistical inference based on dependent competing risks data from Marshall-Olkin bivariate Weibull distribution. The maximum likelihood estimates of the unknown model parameters have been computed by using the…

统计方法学 · 统计学 2023-04-20 Subhankar Dutta , Suchandan Kayal

Despite their power, Transformers face challenges with long sequences due to the quadratic complexity of self-attention. To address this limitation, methods like $k$-Nearest-Neighbor ($k$NN) attention have been introduced [Roy, Saffar,…

机器学习 · 计算机科学 2024-11-11 Themistoklis Haris

We study the extreme value distribution of stochastic processes modeled by superstatistics. Classical extreme value theory asserts that (under mild asymptotic independence assumptions) only three possible limit distributions are possible,…

统计力学 · 物理学 2015-06-22 Pau Rabassa , Christian Beck

Ensembles of neural network weight matrices are studied through the training process for the MNIST classification problem, testing the efficacy of matrix models for representing their distributions, under assumptions of Gaussianity and…

机器学习 · 计算机科学 2025-10-08 Edward Hirst , Sanjaye Ramgoolam

We introduce a general, flexible, parametric survival modelling framework which encompasses key shapes of hazard function (constant, increasing, decreasing, up-then-down, down-then-up), various common survival distributions (log-logistic,…

统计方法学 · 统计学 2019-01-11 Kevin Burke , M. C. Jones , Angela Noufaily

Variational methods are attractive for computing Bayesian inference for highly parametrized models and large datasets where exact inference is impractical. They approximate a target distribution - either the posterior or an augmented…

统计计算 · 统计学 2019-11-21 Michael Stanley Smith , Ruben Loaiza-Maya , David J. Nott

We present a novel approach to selective model quantization that transcends the limitations of architecture-specific and size-dependent compression methods for Large Language Models (LLMs) using Entropy-Weighted Quantization (EWQ). By…

In this paper, we analyze the relative errors that crop up in the various reliability measures due to the tacit assumption that the components are independently working associated with a $n$-component series system or a parallel system…

统计理论 · 数学 2025-03-28 Subarna Bhattacharjee , Aninda Kumar Nanda , Subhashree Patra