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We propose a novel class of separable multilayer network models to capture cross-layer dependencies in multilayer networks, enabling the analysis of how interactions in one or more layers may influence interactions in other layers. Our…

Statistics Theory · Mathematics 2025-01-10 Jiaheng Li , Jonathan R. Stewart

We use machine learning techniques to investigate whether it is possible to replicate the behavior of bank managers who assess the risk of commercial loans made by a large commercial US bank. Even though a typical bank already relies on an…

Econometrics · Economics 2022-02-10 Matthew Harding , Gabriel F. R. Vasconcelos

Decision making in modern stochastic systems, including e-commerce platforms, financial markets and healthcare systems, has evolved into a multifaceted process that combines information acquisition and adaptive information sources. This…

Optimization and Control · Mathematics 2026-01-07 Renyuan Xu , Thaleia Zariphopoulou , Luhao Zhang

We propose a Bayesian regression method that accounts for multi-way interactions of arbitrary orders among the predictor variables. Our model makes use of a factorization mechanism for representing the regression coefficients of…

Machine Learning · Statistics 2017-09-28 Mikhail Yurochkin , XuanLong Nguyen , Nikolaos Vasiloglou

Much of contemporary systems biology owes its success to the abstraction of a network, the idea that diverse kinds of molecular, cellular, and organismal species and interactions can be modeled as relational nodes and edges in a graph of…

Molecular Networks · Quantitative Biology 2017-05-26 Joseph L. Natale , David Hofmann , Damian G. Hernández , Ilya Nemenman

Side information is being used extensively to improve the effectiveness of sequential recommendation models. It is said to help capture the transition patterns among items. Most previous work on sequential recommendation that uses side…

Information Retrieval · Computer Science 2023-02-22 Yujie Lin , Zhumin Chen , Zhaochun Ren , Chenyang Wang , Qiang Yan , Maarten de Rijke , Xiuzhen Cheng , Pengjie Ren

Including pairwise interactions between the predictors of a regression model can produce better predicting models. However, to fit such interaction models on typical data sets in biology and other fields can often require solving enormous…

Methodology · Statistics 2023-02-14 Guo Yu , Jacob Bien , Ryan Tibshirani

Modern AI systems are typically developed through multiple stages-pretraining, fine-tuning rounds, and subsequent adaptation or alignment, where each stage builds on the previous ones and updates the model in distinct ways. This raises a…

Machine Learning · Computer Science 2026-02-10 Shichang Zhang , Hongzhe Du , Jiaqi W. Ma , Himabindu Lakkaraju

Large Language Models have achieved strong performance on reasoning tasks with objective answers by generating step-by-step solutions, but diagnosing where a multi-step reasoning trace might fail remains difficult. Confidence estimation…

Computation and Language · Computer Science 2026-05-20 Xiaoou Liu , Tiejin Chen , Dengjia Zhang , Yaqing Wang , Lu Cheng , Hua Wei

There is a renewed interest in polynomial regression in the form of identifying influential interactions between features. In many settings, this takes place in a high-dimensional model, making the number of interactions unwieldy or…

Methodology · Statistics 2020-02-19 Kory D. Johnson , Robert A. Stine , Dean P. Foster

Session-based Recommendation (SR) aims to predict the next item for recommendation based on previously recorded sessions of user interaction. The majority of existing approaches to SR focus on modeling the transition patterns of items. In…

Information Retrieval · Computer Science 2022-04-06 Jiahao Yuan , Wendi Ji , Dell Zhang , Jinwei Pan , Xiaoling Wang

As the final stage of the multi-stage recommender system (MRS), reranking directly affects users' experience and satisfaction, thus playing a critical role in MRS. Despite the improvement achieved in the existing work, three issues are yet…

Information Retrieval · Computer Science 2022-04-21 Yunjia Xi , Weiwen Liu , Jieming Zhu , Xilong Zhao , Xinyi Dai , Ruiming Tang , Weinan Zhang , Rui Zhang , Yong Yu

In today's world, banks use artificial intelligence to optimize diverse business processes, aiming to improve customer experience. Most of the customer-related tasks can be categorized into two groups: 1) local ones, which focus on a…

We consider the problem of sequential evaluation, in which an evaluator observes candidates in a sequence and assigns scores to these candidates in an online, irrevocable fashion. Motivated by the psychology literature that has studied…

Machine Learning · Statistics 2023-11-20 Jingyan Wang , Ashwin Pananjady

When an interval of integers between the lower bound $l_i$ and the upper bound $u_i$ is the support of the marginal distribution $n_i|(n_{i-1}, ...,n_1)$, Chen et al, 2005 noticed that sampling from the interval at each step, for $n_i$…

Combinatorics · Mathematics 2018-01-19 Ruriko Yoshida , Jing Xi , Shaoceng Wei , Feng Zhou , David Haws

Most decision-focused learning work has focused on single stage problems whereas many real-world decision problems are more appropriately modelled using multistage optimisation. In multistage problems contextual information is revealed over…

Optimization and Control · Mathematics 2025-05-29 Egon Peršak , Miguel F. Anjos

In real-world applications, users always interact with items in multiple aspects, such as through implicit binary feedback (e.g., clicks, dislikes, long views) and explicit feedback (e.g., comments, reviews). Modern recommendation systems…

Information Retrieval · Computer Science 2025-08-26 Shuo Yang , Jiangxia Cao , Haipeng Li , Yuqi Mao , Shuchao Pang

In this paper, we propose a hybrid bankcard response model, which integrates decision tree based chi-square automatic interaction detection (CHAID) into logistic regression. In the first stage of the hybrid model, CHAID analysis is used to…

Machine Learning · Statistics 2019-01-03 Yan Wang , Xuelei Sherry Ni , Brian Stone

FinTech lending (e.g., micro-lending) has played a significant role in facilitating financial inclusion. It has reduced processing times and costs, enhanced the user experience, and made it possible for people to obtain loans who may not…

Machine Learning · Computer Science 2023-05-11 Xiyang Hu , Yan Huang , Beibei Li , Tian Lu

Stepwise inference protocols, such as scratchpads and chain-of-thought, help language models solve complex problems by decomposing them into a sequence of simpler subproblems. Despite the significant gain in performance achieved via these…

Machine Learning · Computer Science 2024-02-13 Mikail Khona , Maya Okawa , Jan Hula , Rahul Ramesh , Kento Nishi , Robert Dick , Ekdeep Singh Lubana , Hidenori Tanaka