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Biased regularization and fine-tuning are two recent meta-learning approaches. They have been shown to be effective to tackle distributions of tasks, in which the tasks' target vectors are all close to a common meta-parameter vector.…

机器学习 · 计算机科学 2020-08-26 Giulia Denevi , Massimiliano Pontil , Carlo Ciliberto

The benefit of multi-task learning over single-task learning relies on the ability to use relations across tasks to improve performance on any single task. While sharing representations is an important mechanism to share information across…

机器学习 · 计算机科学 2021-06-14 Shagun Sodhani , Amy Zhang , Joelle Pineau

The goal of optimization-based meta-learning is to find a single initialization shared across a distribution of tasks to speed up the process of learning new tasks. Conditional meta-learning seeks task-specific initialization to better…

机器学习 · 计算机科学 2020-10-20 Ruohan Wang , Yiannis Demiris , Carlo Ciliberto

Few-shot meta-learning methods consider the problem of learning new tasks from a small, fixed number of examples, by meta-learning across static data from a set of previous tasks. However, in many real world settings, it is more natural to…

机器学习 · 计算机科学 2020-12-15 Tianhe Yu , Xinyang Geng , Chelsea Finn , Sergey Levine

Typically, loss functions, regularization mechanisms and other important aspects of training parametric models are chosen heuristically from a limited set of options. In this paper, we take the first step towards automating this process,…

Recent studies on catastrophic forgetting during sequential learning typically focus on fixing the accuracy of the predictions for a previously learned task. In this paper we argue that the outputs of neural networks are subject to rapid…

机器学习 · 计算机科学 2020-02-14 Yuwen Xiong , Mengye Ren , Raquel Urtasun

Multi-Task Learning (MTL) involves the concurrent training of multiple tasks, offering notable advantages for dense prediction tasks in computer vision. MTL not only reduces training and inference time as opposed to having multiple…

计算机视觉与模式识别 · 计算机科学 2024-12-05 Maxime Fontana , Michael Spratling , Miaojing Shi

Existing gradient-based meta-learning approaches to few-shot learning assume that all tasks have the same input feature space. However, in the real world scenarios, there are many cases that the input structures of tasks can be different,…

人工智能 · 计算机科学 2021-09-29 Jiayi Chen , Aidong Zhang

Meta-learning represents a strong class of approaches for solving few-shot learning tasks. Nonetheless, recent research suggests that simply pre-training a generic encoder can potentially surpass meta-learning algorithms. In this paper, we…

机器学习 · 计算机科学 2025-03-14 Wei Cui , Tongzi Wu , Jesse C. Cresswell , Yi Sui , Keyvan Golestan

We build a theoretical framework for designing and understanding practical meta-learning methods that integrates sophisticated formalizations of task-similarity with the extensive literature on online convex optimization and sequential…

机器学习 · 计算机科学 2019-12-10 Mikhail Khodak , Maria-Florina Balcan , Ameet Talwalkar

In modern supervised learning, there are a large number of tasks, but many of them are associated with only a small amount of labeled data. These include data from medical image processing and robotic interaction. Even though each…

机器学习 · 计算机科学 2020-02-21 Weihao Kong , Raghav Somani , Zhao Song , Sham Kakade , Sewoong Oh

When faced with learning a set of inter-related tasks from a limited amount of usable data, learning each task independently may lead to poor generalization performance. Multi-Task Learning (MTL) exploits the latent relations between tasks…

机器学习 · 计算机科学 2015-08-14 Niloofar Yousefi , Michael Georgiopoulos , Georgios C. Anagnostopoulos

Metalearning and multitask learning are two frameworks for solving a group of related learning tasks more efficiently than we could hope to solve each of the individual tasks on their own. In multitask learning, we are given a fixed set of…

机器学习 · 计算机科学 2024-04-02 Maryam Aliakbarpour , Konstantina Bairaktari , Gavin Brown , Adam Smith , Nathan Srebro , Jonathan Ullman

Learning from small data sets is critical in many practical applications where data collection is time consuming or expensive, e.g., robotics, animal experiments or drug design. Meta learning is one way to increase the data efficiency of…

机器学习 · 统计学 2018-07-10 Steindór Sæmundsson , Katja Hofmann , Marc Peter Deisenroth

In Meta-Reinforcement Learning (meta-RL) an agent is trained on a set of tasks to prepare for and learn faster in new, unseen, but related tasks. The training tasks are usually hand-crafted to be representative of the expected distribution…

人工智能 · 计算机科学 2021-07-07 Ricardo Luna Gutierrez , Matteo Leonetti

In order to learn quickly with few samples, meta-learning utilizes prior knowledge learned from previous tasks. However, a critical challenge in meta-learning is task uncertainty and heterogeneity, which can not be handled via globally…

机器学习 · 计算机科学 2019-11-19 Huaxiu Yao , Ying Wei , Junzhou Huang , Zhenhui Li

We develop information geometric techniques to understand the representations learned by deep networks when they are trained on different tasks using supervised, meta-, semi-supervised and contrastive learning. We shed light on the…

Given a finite set of sample points, meta-learning algorithms aim to learn an optimal adaptation strategy for new, unseen tasks. Often, this data can be ambiguous as it might belong to different tasks concurrently. This is particularly the…

机器学习 · 计算机科学 2024-10-24 Alfredo Reichlin , Gustaf Tegnér , Miguel Vasco , Hang Yin , Mårten Björkman , Danica Kragic

In recent years, multi-task learning has turned out to be of great success in various applications. Though single model training has promised great results throughout these years, it ignores valuable information that might help us estimate…

机器学习 · 计算机科学 2022-09-28 Yeshwant Singh , Anupam Biswas , Angshuman Bora , Debashish Malakar , Subham Chakraborty , Suman Bera

The reason for Meta Overfitting can be attributed to two factors: Mutual Non-exclusivity and the Lack of diversity, consequent to which a single global function can fit the support set data of all the meta-training tasks and fail to…

机器学习 · 计算机科学 2024-11-12 Manas Gogoi , Sambhavi Tiwari , Shekhar Verma