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The goal in extreme multi-label classification is to learn a classifier which can assign a small subset of relevant labels to an instance from an extremely large set of target labels. Datasets in extreme classification exhibit a long tail…

机器学习 · 统计学 2018-03-06 Rohit Babbar , Bernhard Schölkopf

Curation of large fully supervised datasets has become one of the major roadblocks for machine learning. Weak supervision provides an alternative to supervised learning by training with cheap, noisy, and possibly correlated labeling…

机器学习 · 计算机科学 2021-06-01 Chidubem Arachie , Bert Huang

Extreme classification tasks are multi-label tasks with an extremely large number of labels (tags). These tasks are hard because the label space is usually (i) very large, e.g. thousands or millions of labels, (ii) very sparse, i.e. very…

机器学习 · 计算机科学 2020-12-04 Elham J. Barezi , Iacer Calixto , Kyunghyun Cho , Pascale Fung

Weakly-supervised object detection attempts to limit the amount of supervision by dispensing the need for bounding boxes, but still assumes image-level labels on the entire training set. In this work, we study the problem of training an…

计算机视觉与模式识别 · 计算机科学 2021-07-22 Zhaohui Yang , Miaojing Shi , Chao Xu , Vittorio Ferrari , Yannis Avrithis

Convolutional Dictionary Learning (CDL) has emerged as a powerful approach for signal representation by learning translation-invariant features through convolution operations. While existing CDL methods are predominantly designed and used…

信号处理 · 电气工程与系统科学 2025-05-22 Hao Chen , Dayuan Tan

Traditional supervised learning makes the closed-world assumption that the classes appeared in the test data must have appeared in training. This also applies to text learning or text classification. As learning is used increasingly in…

计算与语言 · 计算机科学 2017-09-27 Lei Shu , Hu Xu , Bing Liu

Labeling training data has become one of the major roadblocks to using machine learning. Among various weak supervision paradigms, programmatic weak supervision (PWS) has achieved remarkable success in easing the manual labeling bottleneck…

机器学习 · 计算机科学 2022-02-15 Jieyu Zhang , Cheng-Yu Hsieh , Yue Yu , Chao Zhang , Alexander Ratner

Recent works have shown that unstructured text (documents) from online sources can serve as useful auxiliary information for zero-shot image classification. However, these methods require access to a high-quality source like Wikipedia and…

In many multilingual text classification problems, the documents in different languages often share the same set of categories. To reduce the labeling cost of training a classification model for each individual language, it is important to…

计算与语言 · 计算机科学 2012-07-03 Yuhong Guo , Min Xiao

This paper looks at semi-supervised learning (SSL) for image-based text recognition. One of the most popular SSL approaches is pseudo-labeling (PL). PL approaches assign labels to unlabeled data before re-training the model with a…

计算机视觉与模式识别 · 计算机科学 2022-10-10 Gaurav Patel , Jan Allebach , Qiang Qiu

Neural text classification models typically treat output labels as categorical variables which lack description and semantics. This forces their parametrization to be dependent on the label set size, and, hence, they are unable to scale to…

计算与语言 · 计算机科学 2019-01-31 Nikolaos Pappas , James Henderson

In this paper we consider the problem of semi-supervised learning with deep Convolutional Neural Networks (ConvNets). Semi-supervised learning is motivated on the observation that unlabeled data is cheap and can be used to improve the…

计算机视觉与模式识别 · 计算机科学 2016-06-13 Mehdi Sajjadi , Mehran Javanmardi , Tolga Tasdizen

Zero-shot learning has received increasing interest as a means to alleviate the often prohibitive expense of annotating training data for large scale recognition problems. These methods have achieved great success via learning intermediate…

机器学习 · 计算机科学 2015-03-27 Yanwei Fu , Yongxin Yang , Tim Hospedales , Tao Xiang , Shaogang Gong

The availability of labelled data is one of the main limitations in machine learning. We can alleviate this using weak supervision: a framework that uses expert-defined rules $\boldsymbol{\lambda}$ to estimate probabilistic labels…

机器学习 · 计算机科学 2021-05-03 Samantha Biegel , Rafah El-Khatib , Luiz Otavio Vilas Boas Oliveira , Max Baak , Nanne Aben

3D weakly supervised semantic segmentation (3D WSSS) aims to achieve semantic segmentation by leveraging sparse or low-cost annotated data, significantly reducing reliance on dense point-wise annotations. Previous works mainly employ class…

计算机视觉与模式识别 · 计算机科学 2025-10-22 Xiaoxu Xu , Xuexun Liu , Jinlong Li , Yitian Yuan , Qiudan Zhang , Lin Ma , Nicu Sebe , Xu Wang

In open-world semi-supervised learning (OWSSL), a model learns from labeled data and unlabeled data containing both known and novel classes. In practical OWSSL applications, models are expected to perform rigorous classification by directly…

计算机视觉与模式识别 · 计算机科学 2026-05-01 Hezhao Liu , Jiacheng Yang , Junlong Gao , Mengke Li , Yiqun Zhang , Shreyank N Gowda , Yang Lu

Hierarchical text classification has many real-world applications. However, labeling a large number of documents is costly. In practice, we can use semi-supervised learning or weakly supervised learning (e.g., dataless classification) to…

机器学习 · 计算机科学 2019-02-26 Huiru Xiao , Xin Liu , Yangqiu Song

We study the named entity recognition (NER) problem under the extremely weak supervision (XWS) setting, where only one example entity per type is given in a context-free way. While one can see that XWS is lighter than one-shot in terms of…

计算与语言 · 计算机科学 2023-11-07 Letian Peng , Zihan Wang , Jingbo Shang

Semi-supervised learning (SSL) is a widely used technique in scenarios where labeled data is scarce and unlabeled data is abundant. While SSL is popular for image and text classification, it is relatively underexplored for the task of…

计算与语言 · 计算机科学 2024-07-03 Gaurav Sahu , Olga Vechtomova , Issam H. Laradji

The task of text and sentence classification is associated with the need for large amounts of labelled training data. The acquisition of high volumes of labelled datasets can be expensive or unfeasible, especially for highly-specialised…

计算与语言 · 计算机科学 2021-06-07 Aleksandra Edwards , David Rogers , Jose Camacho-Collados , Hélène de Ribaupierre , Alun Preece