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For measuring tail risk with scarce extreme events, extreme value analysis is often invoked as the statistical tool to extrapolate to the tail of a distribution. The presence of large datasets benefits tail risk analysis by providing more…

统计方法学 · 统计学 2023-12-18 Liujun Chen , Deyuan Li , Chen Zhou

Long-tailed classification is challenging due to its heavy imbalance in class probabilities. While existing methods often focus on overall accuracy or accuracy for tail classes, they overlook a critical aspect: certain types of errors can…

机器学习 · 计算机科学 2025-01-27 Bolian Li , Ruqi Zhang

Online job ads serve as a valuable source of information for skill requirements, playing a crucial role in labor market analysis and e-recruitment processes. Since such ads are typically formatted in free text, natural language processing…

In a companion paper (McRobie(2013) arxiv:1304.3918), a simple set of `elemental' estimators was presented for the Generalized Pareto tail parameter. Each elemental estimator: involves only three log-spacings; is absolutely unbiased for all…

统计理论 · 数学 2013-04-17 Allan McRobie

This paper attempts to provide a decision-theoretic foundation for the measurement of economic tail risk, which is not only closely related to utility theory but also relevant to statistical model uncertainty. The main result is that the…

风险管理 · 定量金融 2015-08-18 Steven Kou , Xianhua Peng

In this paper, we consider the problem of linear regression with heavy-tailed distributions. Different from previous studies that use the squared loss to measure the performance, we choose the absolute loss, which is capable of estimating…

机器学习 · 计算机科学 2018-10-26 Lijun Zhang , Zhi-Hua Zhou

Class imbalance has been extensively studied in single-view scenarios; however, addressing this challenge in multi-view contexts remains an open problem, with even scarcer research focusing on trustworthy solutions. In this paper, we tackle…

机器学习 · 计算机科学 2025-11-13 Chuanqing Tang , Yifei Shi , Guanghao Lin , Lei Xing , Long Shi

Obtaining high-quality labels is costly, whereas unlabeled covariates are often abundant, motivating semi-supervised inference methods with reliable uncertainty quantification. Prediction-powered inference (PPI) leverages a machine-learning…

机器学习 · 统计学 2026-05-29 Se Yoon Lee , Jae Kwang Kim

Solving problems through tool use under explicit constraints constitutes a highly challenging yet unavoidable scenario for large language models (LLMs), requiring capabilities such as function calling, instruction following, and…

计算与语言 · 计算机科学 2026-03-17 Junjie Ye , Guoqiang Zhang , Wenjie Fu , Tao Gui , Qi Zhang , Xuanjing Huang

Multi-label classification is a type of supervised machine learning that can simultaneously assign multiple labels to an instance. To solve this task, some methods divide the original problem into several sub-problems (local approach),…

机器学习 · 计算机科学 2024-11-18 Elaine Cecília Gatto , Felipe Nakano Kenji , Jesse Read , Mauri Ferrandin , Ricardo Cerri , Celine Vens

Multi-label classification (MLC) is an ML task of predictive modeling in which a data instance can simultaneously belong to multiple classes. MLC is increasingly gaining interest in different application domains such as text mining,…

机器学习 · 计算机科学 2022-11-22 Ana Kostovska , Carola Doerr , Sašo Džeroski , Dragi Kocev , Panče Panov , Tome Eftimov

Foundation models have revolutionized artificial intelligence across numerous domains, yet their transformative potential remains largely untapped in Extreme Multi-label Classification (XMC). Queries in XMC are associated with relevant…

计算机视觉与模式识别 · 计算机科学 2025-11-18 Diego Ortego , Marlon Rodríguez , Mario Almagro , Kunal Dahiya , David Jiménez , Juan C. SanMiguel

Long-tailed data is prevalent in real-world classification tasks and heavily relies on supervised information, which makes the annotation process exceptionally labor-intensive and time-consuming. Unfortunately, despite being a common…

机器学习 · 计算机科学 2024-12-04 Meng Wei , Zhongnian Li , Yong Zhou , Xinzheng Xu

Programming is a core skill in computer science and software engineering (SE), yet identifying and resolving code errors remains challenging for both novice and experienced developers. While Large Language Models (LLMs) have shown…

Assigning a set of labels to a given text is a classification problem with many real-world applications, such as recommender systems. Two separate research streams address this issue. Hierarchical Text Classification (HTC) focuses on…

The extreme value theory is very popular in applied sciences including Finance, economics, hydrology and many other disciplines. In univariate extreme value theory, we model the data by a suitable distribution from the general max-domain of…

统计方法学 · 统计学 2019-05-09 Abhik Ghosh

Long-tail learning is the problem of learning under skewed label distributions, which pose a challenge for standard learners. Several recent approaches for the problem have proposed enforcing a suitable margin in logit space. Such…

机器学习 · 计算机科学 2022-04-29 Wittawat Jitkrittum , Aditya Krishna Menon , Ankit Singh Rawat , Sanjiv Kumar

The goal in label-imbalanced and group-sensitive classification is to optimize relevant metrics such as balanced error and equal opportunity. Classical methods, such as weighted cross-entropy, fail when training deep nets to the terminal…

机器学习 · 计算机科学 2021-11-09 Ganesh Ramachandra Kini , Orestis Paraskevas , Samet Oymak , Christos Thrampoulidis

Multi-label classification deals with the problem where each instance is associated with multiple class labels. Because evaluation in multi-label classification is more complicated than single-label setting, a number of performance measures…

机器学习 · 计算机科学 2020-07-07 Xi-Zhu Wu , Zhi-Hua Zhou

Ultra-reliable and low-latency communication (URLLC) will play a key role in fifth-generation (5G) and beyond networks, enabling mission-critical applications. Meeting the stringent URLLC requirements, characterized by extremely low packet…

信号处理 · 电气工程与系统科学 2026-04-29 Parmida Valiahdi , Niloofar Mehrnia , Walid Saad , Sinem Coleri