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Supervised training of deep neural nets typically relies on minimizing cross-entropy. However, in many domains, we are interested in performing well on metrics specific to the application. In this paper we propose a direct loss minimization…

机器学习 · 计算机科学 2016-06-03 Yang Song , Alexander G. Schwing , Richard S. Zemel , Raquel Urtasun

The predominant approach in reinforcement learning is to assign credit to actions based on the expected return. However, we show that the return may depend on the policy in a way which could lead to excessive variance in value estimation…

机器学习 · 计算机科学 2023-02-07 Hsiao-Ru Pan , Nico Gürtler , Alexander Neitz , Bernhard Schölkopf

The emergence of 6G wireless communication enables massive edge device access and supports real-time intelligent services such as the Internet of things (IoT) and vehicle-to-everything (V2X). However, the surge in edge devices connectivity…

信息论 · 计算机科学 2026-01-27 Hanwen Zhang , Haijian Sun

Semantic segmentation of satellite imagery plays a vital role in land cover mapping and environmental monitoring. However, annotating large-scale, high-resolution satellite datasets is costly and time consuming, especially when covering…

计算机视觉与模式识别 · 计算机科学 2026-04-13 Gadi Hemanth Kumar , Athira Nambiar , Pankaj Bodani

We design an active learning algorithm for cost-sensitive multiclass classification: problems where different errors have different costs. Our algorithm, COAL, makes predictions by regressing to each label's cost and predicting the…

机器学习 · 计算机科学 2021-10-13 Akshay Krishnamurthy , Alekh Agarwal , Tzu-Kuo Huang , Hal Daume , John Langford

Deep learning (DL) algorithms rely on massive amounts of labeled data. Semi-supervised learning (SSL) and active learning (AL) aim to reduce this label complexity by leveraging unlabeled data or carefully acquiring labels, respectively. In…

机器学习 · 计算机科学 2023-02-16 Seo Taek Kong , Soomin Jeon , Dongbin Na , Jaewon Lee , Hong-Seok Lee , Kyu-Hwan Jung

Active learning is usually applied to acquire labels of informative data points in supervised learning, to maximize accuracy in a sample-efficient way. However, maximizing the accuracy is not the end goal when the results are used for…

While deep learning succeeds in a wide range of tasks, it highly depends on the massive collection of annotated data which is expensive and time-consuming. To lower the cost of data annotation, active learning has been proposed to…

计算机视觉与模式识别 · 计算机科学 2022-12-22 Siyu Huang , Tianyang Wang , Haoyi Xiong , Bihan Wen , Jun Huan , Dejing Dou

We propose a framework for online meta-optimization of parameters that govern optimization, called Amortized Proximal Optimization (APO). We first interpret various existing neural network optimizers as approximate stochastic proximal point…

机器学习 · 计算机科学 2022-03-02 Juhan Bae , Paul Vicol , Jeff Z. HaoChen , Roger Grosse

Machine learning in medical imaging during clinical routine is impaired by changes in scanner protocols, hardware, or policies resulting in a heterogeneous set of acquisition settings. When training a deep learning model on an initial…

计算机视觉与模式识别 · 计算机科学 2022-03-16 Matthias Perkonigg , Johannes Hofmanninger , Christian Herold , Helmut Prosch , Georg Langs

Active learning (AL) uses a data selection algorithm to select useful training samples to minimize annotation cost. This is now an essential tool for building low-resource syntactic analyzers such as part-of-speech (POS) taggers. Existing…

计算与语言 · 计算机科学 2020-11-24 Aditi Chaudhary , Antonios Anastasopoulos , Zaid Sheikh , Graham Neubig

Active Learning (AL) techniques aim to minimize the training data required to train a model for a given task. Pool-based AL techniques start with a small initial labeled pool and then iteratively pick batches of the most informative samples…

机器学习 · 计算机科学 2021-07-15 Akshay L Chandra , Sai Vikas Desai , Chaitanya Devaguptapu , Vineeth N Balasubramanian

The Deep Learning revolution has enabled groundbreaking achievements in recent years. From breast cancer detection to protein folding, deep learning algorithms have been at the core of very important advancements. However, these modern…

计算机视觉与模式识别 · 计算机科学 2024-03-01 Bonaventure F. P. Dossou

In many classification problems unlabelled data is abundant and a subset can be chosen for labelling. This defines the context of active learning (AL), where methods systematically select that subset, to improve a classifier by retraining.…

机器学习 · 统计学 2014-07-31 Lewis P. G. Evans , Niall M. Adams , Christoforos Anagnostopoulos

Deep learning revolution happened thanks to the availability of a massive amount of labelled data which have contributed to the development of models with extraordinary inference capabilities. Despite the public availability of a large…

计算机视觉与模式识别 · 计算机科学 2020-03-31 Jurandy Almeida , Cristiano Saltori , Paolo Rota , Nicu Sebe

Pool-based active learning (AL) aims to optimize the annotation process (i.e., labeling) as the acquisition of annotations is often time-consuming and therefore expensive. For this purpose, an AL strategy queries annotations intelligently…

机器学习 · 计算机科学 2022-01-06 Marek Herde , Denis Huseljic , Bernhard Sick , Adrian Calma

Event extraction (EE) plays an important role in many industrial application scenarios, and high-quality EE methods require a large amount of manual annotation data to train supervised learning models. However, the cost of obtaining…

计算与语言 · 计算机科学 2023-03-21 Shirong Shen , Zhen Li , Guilin Qi

Active learning (AL) seeks to reduce annotation costs by selecting the most informative samples for labeling, making it particularly valuable in resource-constrained settings. However, traditional evaluation methods, which focus solely on…

机器学习 · 计算机科学 2025-07-22 Julia Machnio , Mads Nielsen , Mostafa Mehdipour Ghazi

Active learning typically focuses on training a model on few labeled examples alone, while unlabeled ones are only used for acquisition. In this work we depart from this setting by using both labeled and unlabeled data during model training…

计算机视觉与模式识别 · 计算机科学 2019-11-20 Oriane Siméoni , Mateusz Budnik , Yannis Avrithis , Guillaume Gravier

Active Learning (AL) is increasingly important in a broad range of applications. Two main AL principles to obtain accurate classification with few labeled data are refinement of the current decision boundary and exploration of poorly…

机器学习 · 计算机科学 2012-10-19 Jens Roeder , Boaz Nadler , Kevin Kunzmann , Fred A. Hamprecht