text: 143,4,1446264438340816923,240851505,Tomas Pfister,"""Fast Sample Reweighting"" is a new paper from our research group @GoogleCloud that allows you to re-weight training samples effectively without the need for additional unbiased reward data. <LINK> PS: We’re hiring! @GoogleAI @googlecloud #ML #research #ICCV2021 <LINK>",https://arxiv.org/abs/2109.03216,"Training sample re-weighting is an effective approach for tackling data biases such as imbalanced and corrupted labels. Recent methods develop learning-based algorithms to learn sample re-weighting strategies jointly with model training based on the frameworks of reinforcement learning and meta learning. However, depending on additional unbiased reward data is limiting their general applicability. Furthermore, existing learning-based sample re-weighting methods require nested optimizations of models and weighting parameters, which requires expensive second-order computation. This paper addresses these two problems and presents a novel learning-based fast sample re-weighting (FSR) method that does not require additional reward data. The method is based on two key ideas: learning from history to build proxy reward data and feature sharing to reduce the optimization cost. Our experiments show the proposed method achieves competitive results compared to state of the arts on label noise robustness and long-tailed recognition, and does so while achieving significantly improved training efficiency. The source code is publicly available at this https URL ",Learning Fast Sample Re-weighting Without Reward Data,1,"['""Fast Sample Reweighting"" is a new paper from our research group @GoogleCloud that allows you to re-weight training samples effectively without the need for additional unbiased reward data.  <LINK> PS: We’re hiring!  @GoogleAI\xa0@googlecloud\xa0#ML\xa0#research\xa0#ICCV2021 <LINK>']",21,09,268