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Relation reasoning in knowledge graphs (KGs) aims at predicting missing relations in incomplete triples, whereas the dominant paradigm is learning the embeddings of relations and entities, which is limited to a transductive setting and has…

计算机科学中的逻辑 · 计算机科学 2024-10-28 Yudai Pan , Jun Liu , Lingling Zhang , Xin Hu , Tianzhe Zhao , Qika Lin

This paper introduces a method for studying the correlation structure of a range of responses modelled by a multivariate generalised linear mixed model (MGLMM). The methodology requires the existence of clusters of observations and that…

统计方法学 · 统计学 2021-08-02 Jeanett S. Pelck , Rodrigo Labouriau

In this paper, we consider a finite difference grid-based semi-Lagrangian approach in solving the Vlasov-Poisson (VP) system. Many of existing methods are based on dimensional splitting, which decouples the problem into solving linear…

数值分析 · 数学 2016-03-01 Jing-Mei Qiu , Giovanni Russo

We introduce a new approach to functional causal modeling from observational data, called Causal Generative Neural Networks (CGNN). CGNN leverages the power of neural networks to learn a generative model of the joint distribution of the…

The advent of predictive methodologies has catalyzed the emergence of data-driven decision support across various domains. However, developing models capable of effectively handling input time series data presents an enduring challenge.…

机器学习 · 计算机科学 2023-11-17 Yijun Li , Mengzhuo Guo , Miłosz Kadziński , Qingpeng Zhang

We develop estimation for potentially high-dimensional additive structural equation models. A key component of our approach is to decouple order search among the variables from feature or edge selection in a directed acyclic graph encoding…

统计方法学 · 统计学 2014-12-02 Peter Bühlmann , Jonas Peters , Jan Ernest

We consider the problem of modeling the dependence among many time series. We build high dimensional time-varying copula models by combining pair-copula constructions (PCC) with stochastic autoregressive copula (SCAR) models to capture…

统计方法学 · 统计学 2012-02-10 Carlos Almeida , Claudia Czado , Hans Manner

We study a class of generalized linear programs (GLP) in a large-scale setting, which includes simple, possibly nonsmooth convex regularizer and simple convex set constraints. By reformulating (GLP) as an equivalent convex-concave min-max…

最优化与控制 · 数学 2023-04-10 Chaobing Song , Cheuk Yin Lin , Stephen J. Wright , Jelena Diakonikolas

In undirected graphical models, learning the graph structure and learning the functions that relate the predictive variables (features) to the responses given the structure are two topics that have been widely investigated in machine…

人工智能 · 计算机科学 2015-03-19 Shilin Ding

We propose a novel architecture called the Multi-view Self-Constructing Graph Convolutional Networks (MSCG-Net) for semantic segmentation. Building on the recently proposed Self-Constructing Graph (SCG) module, which makes use of learnable…

计算机视觉与模式识别 · 计算机科学 2020-05-19 Qinghui Liu , Michael Kampffmeyer , Robert Jenssen , Arnt-Børre Salberg

This paper endeavors to learn time-varying graphs by using structured temporal priors that assume underlying relations between arbitrary two graphs in the graph sequence. Different from many existing chain structure based methods in which…

机器学习 · 计算机科学 2022-02-24 Xiang Zhang , Qiao Wang

Learning directed acyclic graphs (DAGs) to identify causal relations underlying observational data is crucial but also poses significant challenges. Recently, topology-based methods have emerged as a two-step approach to discovering DAGs by…

机器学习 · 计算机科学 2023-08-17 Anpeng Wu , Haoxuan Li , Kun Kuang , Keli Zhang , Fei Wu

Many different classification tasks need to manage structured data, which are usually modeled as graphs. Moreover, these graphs can be dynamic, meaning that the vertices/edges of each graph may change during time. Our goal is to jointly…

机器学习 · 计算机科学 2019-08-20 Franco Manessi , Alessandro Rozza , Mario Manzo

Generating graph structures is a challenging problem due to the diverse representations and complex dependencies among nodes. In this paper, we introduce Graph Variational Recurrent Neural Network (GraphVRNN), a probabilistic autoregressive…

机器学习 · 计算机科学 2019-10-07 Shih-Yang Su , Hossein Hajimirsadeghi , Greg Mori

The univariate integer-valued time series has been extensively studied, but literature on multivariate integer-valued time series models is quite limited and the complex correlation structure among the multivariate integer-valued time…

统计方法学 · 统计学 2023-12-01 Weiyang Yu , Haitao Zheng

Probabilistic circuits (PCs) are a prominent representation of probability distributions with tractable inference. While parameter learning in PCs is rigorously studied, structure learning is often more based on heuristics than on…

机器学习 · 计算机科学 2023-02-24 Yang Yang , Gennaro Gala , Robert Peharz

Undirected graphical models encode in a graph $G$ the dependency structure of a random vector $Y$. In many applications, it is of interest to model $Y$ given another random vector $X$ as input. We refer to the problem of estimating the…

机器学习 · 统计学 2010-06-22 Han Liu , Xi Chen , John Lafferty , Larry Wasserman

In this paper we investigate the computational complexity of learning the graph structure underlying a discrete undirected graphical model from i.i.d. samples. We first observe that the notoriously difficult problem of learning parities…

机器学习 · 统计学 2014-12-04 Guy Bresler , David Gamarnik , Devavrat Shah

A large amount of recent research has the far-reaching goal of finding training methods for deep neural networks that can serve as alternatives to backpropagation (BP). A prominent example is predictive coding (PC), which is a…

机器学习 · 计算机科学 2022-11-08 Luca Pinchetti , Tommaso Salvatori , Yordan Yordanov , Beren Millidge , Yuhang Song , Thomas Lukasiewicz

In this work we study the problem of adaptive MPC for linear time-invariant uncertain models. We assume linear models with parametric uncertainties, and propose an iterative multi-variable extremum seeking (MES)-based learning MPC algorithm…

系统与控制 · 计算机科学 2016-11-15 Mouhacine Benosman , Stefano Di Cairano , Avishai Weiss