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Backward-compatible training circumvents the need for expensive updates to the old gallery database when deploying an advanced new model in the retrieval system. Previous methods achieved backward compatibility by aligning prototypes of the…

计算机视觉与模式识别 · 计算机科学 2024-05-28 Yu Liang , Yufeng Zhang , Shiliang Zhang , Yaowei Wang , Sheng Xiao , Rong Xiao , Xiaoyu Wang

In modern recommendation systems, the standard pipeline involves training machine learning models on historical data to predict user behaviors and improve recommendations continuously. However, these data training loops can introduce…

统计方法学 · 统计学 2024-04-08 Nian Si

In some studies \citep[e.g.,][]{zhang2016understanding} of deep learning, it is observed that over-parametrized deep neural networks achieve a small testing error even when the training error is almost zero. Despite numerous works towards…

机器学习 · 统计学 2022-02-25 Yue Xing , Qifan Song , Guang Cheng

In clinical settings, we often face the challenge of building prediction models based on small observational data sets. For example, such a data set might be from a medical center in a multi-center study. Differences between centers might…

Backfilling is the process of re-extracting all gallery embeddings from upgraded models in image retrieval systems. It inevitably requires a prohibitively large amount of computational cost and even entails the downtime of the service.…

计算机视觉与模式识别 · 计算机科学 2024-12-20 Seonguk Seo , Mustafa Gokhan Uzunbas , Bohyung Han , Sara Cao , Ser-Nam Lim

Recent advances in deep learning have achieved impressive gains in classification accuracy on a variety of types of data, including images and text. Despite these gains, however, concerns have been raised about the calibration, robustness,…

机器学习 · 计算机科学 2018-11-20 Dallas Card , Michael Zhang , Noah A. Smith

Machine learning models trained on real-world data may inadvertently make biased predictions that negatively impact marginalized communities. Reweighting, which assigns a weight to each data point used during model training, can mitigate…

With continuous outcomes, the average causal effect is typically defined using a contrast of expected potential outcomes. However, in the presence of skewed outcome data, the expectation may no longer be meaningful. In practice the typical…

统计方法学 · 统计学 2023-02-06 Daisy A. Shepherd , Benjamin R. Baer , Margarita Moreno-Betancur

The task of privacy-preserving model upgrades in image retrieval desires to reap the benefits of rapidly evolving new models without accessing the raw gallery images. A pioneering work introduced backward-compatible training, where the new…

计算机视觉与模式识别 · 计算机科学 2022-05-02 Shupeng Su , Binjie Zhang , Yixiao Ge , Xuyuan Xu , Yexin Wang , Chun Yuan , Ying Shan

Machine learning models trained on imbalanced datasets often exhibit intersectional biases-systematic errors arising from the interaction of multiple attributes such as object class and environmental conditions. This paper presents a…

计算机视觉与模式识别 · 计算机科学 2025-10-21 Farjana Yesmin

Selecting an appropriate evaluation metric for classifiers is crucial for model comparison, parameter optimization, and deployment decisions, yet there is no consensus on a broadly accepted evaluation paradigm explicitly aligned with Total…

机器学习 · 计算机科学 2026-05-28 Pierangelo Lombardo , Antonio Casoli , Cristian Cingolani , Shola Oshodi , Michele Zanatta

This study proposes a method to enhance neural network performance when training data and application data are not very similar, e.g., out of distribution problems, as well as pattern and regime shifts. The method consists of three main…

机器学习 · 计算机科学 2025-12-04 Jan Saynisch-Wagner , Saran Rajendran Sari

Under distribution shift (DS) where the training data distribution differs from the test one, a powerful technique is importance weighting (IW) which handles DS in two separate steps: weight estimation (WE) estimates the test-over-training…

机器学习 · 计算机科学 2020-11-06 Tongtong Fang , Nan Lu , Gang Niu , Masashi Sugiyama

This paper investigates when the importance weighting (IW) correction is needed to address covariate shift, a common situation in supervised learning where the input distributions of training and test data differ. Classic results show that…

Recurrent events are common and important clinical trial endpoints in many disease areas, e.g., cardiovascular hospitalizations in heart failure, relapses in multiple sclerosis, or exacerbations in asthma. During a trial, patients may…

统计方法学 · 统计学 2026-04-08 Jiren Sun , Tobias Mutze , Richard Cook , Tianmeng Lyu

Machine Learning models face increased concerns regarding the storage of personal user data and adverse impacts of corrupted data like backdoors or systematic bias. Machine Unlearning can address these by allowing post-hoc deletion of…

机器学习 · 计算机科学 2023-02-23 Shashwat Goel , Ameya Prabhu , Amartya Sanyal , Ser-Nam Lim , Philip Torr , Ponnurangam Kumaraguru

Deep models trained on large amounts of data often incorporate implicit biases present during training time. If later such a bias is discovered during inference or deployment, it is often necessary to acquire new data and retrain the model.…

计算机视觉与模式识别 · 计算机科学 2024-04-19 Niklas Penzel , Gideon Stein , Joachim Denzler

Supervised (linear) embedding models like Wsabie and PSI have proven successful at ranking, recommendation and annotation tasks. However, despite being scalable to large datasets they do not take full advantage of the extra data due to…

信息检索 · 计算机科学 2013-01-18 Jason Weston , Ron Weiss , Hector Yee

Behavior of deep neural networks can be inconsistent between different versions. Regressions during model update are a common cause of concern that often over-weigh the benefits in accuracy or efficiency gain. This work focuses on…

计算与语言 · 计算机科学 2021-05-10 Yuqing Xie , Yi-an Lai , Yuanjun Xiong , Yi Zhang , Stefano Soatto

With the increasing availability of data from historical studies and real-world data sources, hybrid control designs that incorporate external data into the evaluation of current studies are being increasingly adopted. In these designs, it…

统计方法学 · 统计学 2025-06-23 Masahiro Kojima , Shunichiro Orihara , Keisuke Hanada , Tomohiro Ohigashi