Publication Type
Conference Proceeding Article
Version
publishedVersion
Publication Date
9-2023
Abstract
Given a limited labeling budget, active learning (al) aims to sample the most informative instances from an unlabeled pool to acquire labels for subsequent model training. To achieve this, al typically measures the informativeness of unlabeled instances based on uncertainty and diversity. However, it does not consider erroneous instances with their neighborhood error density, which have great potential to improve the model performance. To address this limitation, we propose Real, a novel approach to select data instances with Representative Errors for Active Learning. It identifies minority predictions as pseudo errors within a cluster and allocates an adaptive sampling budget for the cluster based on estimated error density. Extensive experiments on five text classification datasets demonstrate that Real consistently outperforms all best-performing baselines regarding accuracy and F1-macro scores across a wide range of hyperparameter settings. Our analysis also shows that Real selects the most representative pseudo errors that match the distribution of ground-truth errors along the decision boundary. Our code is publicly available at https://github.com/withchencheng/ECML_PKDD_23_Real.
Keywords
Active Learning, Error density, Error-driven, Informativeness, Labelings, Model training, Neighbourhood, Pseudo errors, Text classification
Discipline
Databases and Information Systems
Research Areas
Data Science and Engineering
Publication
Proceedings of the European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases, Turin, Italy, 2023 September 18-22
First Page
20
Last Page
37
ISBN
9783031434112
Identifier
10.1007/978-3-031-43412-9_2
Publisher
Springer
City or Country
New York
Citation
CHEN, Cheng; WANG, Yong; LIAO, Lizi; CHEN, Yueguo; and DU, Xiaoyong.
Real: A representative error-driven approach for active learning. (2023). Proceedings of the European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases, Turin, Italy, 2023 September 18-22. 20-37.
Available at: https://ink.library.smu.edu.sg/sis_research/8586
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Additional URL
https://doi.org/10.1007/978-3-031-43412-9_2