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Anomaly detection is a relevant problem in the area of data analysis. In networked systems, where individual entities interact in pairs, anomalies are observed when pattern of interactions deviates from patterns considered regular. Properly…

社会与信息网络 · 计算机科学 2023-10-25 Hadiseh Safdari , Caterina De Bacco

The objective of advanced topic modeling is not only to explore latent topical structures, but also to estimate relationships between the discovered topics and theoretically relevant metadata. Methods used to estimate such relationships…

计算与语言 · 计算机科学 2025-04-29 P. Schulze , S. Wiegrebe , P. W. Thurner , C. Heumann , M. Aßenmacher

Conventional topic models are ineffective for topic extraction from microblog messages, because the data sparseness exhibited in short messages lacking structure and contexts results in poor message-level word co-occurrence patterns. To…

计算与语言 · 计算机科学 2018-09-12 Jing Li , Yan Song , Zhongyu Wei , Kam-Fai Wong

Complex systems are often characterized by distinct types of interactions between the same entities. These can be described as a multilayer network where each layer represents one type of interaction. These layers may be interdependent in…

社会与信息网络 · 计算机科学 2018-08-21 Caterina De Bacco , Eleanor A. Power , Daniel B. Larremore , Cristopher Moore

The behavior of interacting populations typically displays irregular temporal and spatial patterns that are difficult to reconcile with an underlying deterministic dynamics. A classical example is the heterogeneous distribution of plankton…

种群与进化 · 定量生物学 2009-11-13 M. H. Vainstein , J. M. Rubi , J. M. G. Vilar

Large-scale transformer-based language models (LMs) demonstrate impressive capabilities in open text generation. However, controlling the generated text's properties such as the topic, style, and sentiment is challenging and often requires…

计算与语言 · 计算机科学 2021-03-12 Rohola Zandie , Mohammad H. Mahoor

This paper considers generalized linear models using rule-based features, also referred to as rule ensembles, for regression and probabilistic classification. Rules facilitate model interpretation while also capturing nonlinear dependences…

机器学习 · 计算机科学 2019-06-06 Dennis Wei , Sanjeeb Dash , Tian Gao , Oktay Günlük

Symbolic learning represents the most straightforward approach to interpretable modeling, but its applications have been hampered by a single structural design choice: the adoption of propositional logic as the underlying language.…

机器学习 · 计算机科学 2021-09-20 Giovanni Pagliarini , Guido Sciavicco

In this paper, we propose a deep probabilistic multi-view model that is composed of a linear multi-view layer based on probabilistic canonical correlation analysis (CCA) description in the latent space together with deep generative networks…

机器学习 · 计算机科学 2020-03-10 Mahdi Karami , Dale Schuurmans

In this paper, we present a general method that can improve the sample quality of pre-trained likelihood based generative models. Our method constructs an energy function on the latent variable space that yields an energy function on…

机器学习 · 计算机科学 2020-06-16 Zhisheng Xiao , Qing Yan , Yali Amit

We propose a combined model, which integrates the latent factor model and the logistic regression model, for the citation network. It is noticed that neither a latent factor model nor a logistic regression model alone is sufficient to…

机器学习 · 统计学 2019-12-03 Namjoon Suh , Xiaoming Huo , Eric Heim , Lee Seversky

The reconstruction of phylogenetic trees based on viral genetic sequence data sequentially sampled from an epidemic provides estimates of the past transmission dynamics, by fitting epidemiological models to these trees. To our knowledge,…

种群与进化 · 定量生物学 2013-06-17 Amaury Lambert , Helen K. Alexander , Tanja Stadler

A generative modeling framework is proposed that combines diffusion models and manifold learning to efficiently sample data densities on manifolds. The approach utilizes Diffusion Maps to uncover possible low-dimensional underlying (latent)…

机器学习 · 计算机科学 2025-04-22 Dimitris G. Giovanis , Ellis Crabtree , Roger G. Ghanem , Ioannis G. Kevrekidis

We present a probabilistic model for learning from dynamic relational data, wherein the observed interactions among networked nodes are modeled via the Bernoulli Poisson link function, and the underlying network structure are characterized…

社会与信息网络 · 计算机科学 2018-05-29 Sikun Yang , Heinz Koeppl

We present an integrated approach for structure and parameter estimation in latent tree graphical models. Our overall approach follows a "divide-and-conquer" strategy that learns models over small groups of variables and iteratively merges…

机器学习 · 计算机科学 2019-12-19 Furong Huang , Niranjan U. N. , Ioakeim Perros , Robert Chen , Jimeng Sun , Anima Anandkumar

Probabilistic Latent Semantic Analysis is a novel statistical technique for the analysis of two-mode and co-occurrence data, which has applications in information retrieval and filtering, natural language processing, machine learning from…

机器学习 · 计算机科学 2013-01-30 Thomas Hofmann

This work contributes to the development of neural forecasting models with novel randomization-based learning methods. These methods improve the fitting abilities of the neural model, in comparison to the standard method, by generating…

机器学习 · 计算机科学 2021-07-06 Grzegorz Dudek

In this paper we first propose a new statistical parsing model, which is a generative model of lexicalised context-free grammar. We then extend the model to include a probabilistic treatment of both subcategorisation and wh-movement.…

cmp-lg · 计算机科学 2008-02-03 Michael Collins

Latent structure methods, specifically linear continuous latent structure methods, are a type of fundamental statistical learning strategy. They are widely used for dimension reduction, regression and prediction, in the fields of…

统计方法学 · 统计学 2025-08-07 Clara Grazian , Qian Jin , Pierre Lafaye De Micheaux

We propose a novel statistical model for sparse networks with overlapping community structure. The model is based on representing the graph as an exchangeable point process, and naturally generalizes existing probabilistic models with…

统计方法学 · 统计学 2025-02-06 Adrien Todeschini , Xenia Miscouridou , François Caron