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Heuristic negative sampling enhances recommendation performance by selecting negative samples of varying hardness levels from predefined candidate pools to guide the model toward learning more accurate decision boundaries. However, our…

机器学习 · 计算机科学 2025-08-12 Chu Zhao , Eneng Yang , Yizhou Dang , Jianzhe Zhao , Guibing Guo , Xingwei Wang

Learning user preferences for products based on their past purchases or reviews is at the cornerstone of modern recommendation engines. One complication in this learning task is that some users are more likely to purchase products or review…

信息检索 · 计算机科学 2023-03-08 Wanning Chen , Mohsen Bayati

Time series classification is an important problem in real world. Due to its non-stationary property that the distribution changes over time, it remains challenging to build models for generalization to unseen distributions. In this paper,…

机器学习 · 计算机科学 2023-03-01 Wang Lu , Jindong Wang , Xinwei Sun , Yiqiang Chen , Xing Xie

Machine learning-assisted retrosynthesis prediction models have been gaining widespread adoption, though their performances oftentimes degrade significantly when deployed in real-world applications embracing out-of-distribution (OOD)…

机器学习 · 计算机科学 2023-12-19 Yemin Yu , Luotian Yuan , Ying Wei , Hanyu Gao , Xinhai Ye , Zhihua Wang , Fei Wu

Invariant Causal Prediction (Peters et al., 2016) is a technique for out-of-distribution generalization which assumes that some aspects of the data distribution vary across the training set but that the underlying causal mechanisms remain…

机器学习 · 计算机科学 2021-03-30 Elan Rosenfeld , Pradeep Ravikumar , Andrej Risteski

Probabilistic models often use neural networks to control their predictive uncertainty. However, when making out-of-distribution (OOD)} predictions, the often-uncontrollable extrapolation properties of neural networks yield poor uncertainty…

机器学习 · 计算机科学 2022-01-19 Pierre Segonne , Yevgen Zainchkovskyy , Søren Hauberg

Detecting out-of-distribution (OOD) inputs is critical for safely deploying deep learning models in the real world. Existing approaches for detecting OOD examples work well when evaluated on benign in-distribution and OOD samples. However,…

机器学习 · 计算机科学 2021-12-10 Jiefeng Chen , Yixuan Li , Xi Wu , Yingyu Liang , Somesh Jha

Deep neural networks are known to be overconfident when applied to out-of-distribution (OOD) inputs which clearly do not belong to any class. This is a problem in safety-critical applications since a reliable assessment of the uncertainty…

机器学习 · 计算机科学 2021-03-11 Julian Bitterwolf , Alexander Meinke , Matthias Hein

This paper presents a novel evaluation framework for Out-of-Distribution (OOD) detection that aims to assess the performance of machine learning models in more realistic settings. We observed that the real-world requirements for testing OOD…

计算机视觉与模式识别 · 计算机科学 2023-09-01 Vahid Reza Khazaie , Anthony Wong , Mohammad Sabokrou

In open-set semi-supervised learning (OSSL), we consider unlabeled datasets that may contain unknown classes. Existing OSSL methods often use the softmax confidence for classifying data as in-distribution (ID) or out-of-distribution (OOD).…

机器学习 · 计算机科学 2026-01-26 Erik Wallin , Lennart Svensson , Fredrik Kahl , Lars Hammarstrand

Out-of-distribution (OOD) detection is concerned with identifying data points that do not belong to the same distribution as the model's training data. For the safe deployment of predictive models in a real-world environment, it is critical…

声音 · 计算机科学 2023-02-28 Zaharah Bukhsh , Aaqib Saeed

A fundamental challenge in physics-informed machine learning (PIML) is the design of robust PIML methods for out-of-distribution (OOD) forecasting tasks. These OOD tasks require learning-to-learn from observations of the same (ODE)…

机器学习 · 计算机科学 2023-03-07 S Chandra Mouli , Muhammad Ashraful Alam , Bruno Ribeiro

Out-of-distribution (OOD) detection is a crucial task for ensuring the reliability and safety of deep learning. Currently, discriminator models outperform other methods in this regard. However, the feature extraction process used by…

计算机视觉与模式识别 · 计算机科学 2023-06-06 Luping Liu , Yi Ren , Xize Cheng , Rongjie Huang , Chongxuan Li , Zhou Zhao

The problem of detecting whether a test sample is from in-distribution (i.e., training distribution by a classifier) or out-of-distribution sufficiently different from it arises in many real-world machine learning applications. However, the…

机器学习 · 统计学 2018-02-27 Kimin Lee , Honglak Lee , Kibok Lee , Jinwoo Shin

Despite the success of deep learning in dermoscopy image analysis, its inherent black-box nature hinders clinical trust, motivating the use of prototypical networks for case-based visual transparency. However, inevitable selection bias in…

图像与视频处理 · 电气工程与系统科学 2026-03-02 Junhao Jia , Yueyi Wu , Huangwei Chen , Haodong Jing , Haishuai Wang , Jiajun Bu , Lei Wu

This thesis makes considerable contributions to the realm of machine learning, specifically in the context of open-world scenarios where systems face previously unseen data and contexts. Traditional machine learning models are usually…

机器学习 · 计算机科学 2023-10-11 Yiyou Sun

Recent object detectors have achieved impressive accuracy in identifying objects seen during training. However, real-world deployment often introduces novel and unexpected objects, referred to as out-of-distribution (OOD) objects, posing…

Deep generative models with latent variables have been used lately to learn joint representations and generative processes from multi-modal data. These two learning mechanisms can, however, conflict with each other and representations can…

机器学习 · 计算机科学 2023-01-24 Rogelio A. Mancisidor , Michael Kampffmeyer , Kjersti Aas , Robert Jenssen

In this paper, we consider the contextual robust optimization problem under an out-of-distribution setting. The contextual robust optimization problem considers a risk-sensitive objective function for an optimization problem with the…

最优化与控制 · 数学 2025-06-06 Zhongze Cai , Hansheng Jiang , Xiaocheng Li

Recommender systems have become crucial in information filtering nowadays. Existing recommender systems extract user preferences based on the correlation in data, such as behavioral correlation in collaborative filtering, feature-feature,…

信息检索 · 计算机科学 2023-12-18 Chen Gao , Yu Zheng , Wenjie Wang , Fuli Feng , Xiangnan He , Yong Li