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Home / Proceedings / Proceedings of the AAAI Conference on Human Computation and Crowdsourcing

Active Learning with Unbalanced Classes and Example-Generation Queries

February 1, 2023

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Authors

Christopher Lin,Mausam Mausam,Daniel Weld

Microsoft,Indian Institute of Technology, Delhi,University of Washington


DOI:

10.1609/hcomp.v6i1.13334


Abstract:

Machine learning in real-world high-skew domains is difficult, because traditional strategies for crowdsourcing labeled training examples are ineffective at locating the scarce minority-class examples. For example, both random sampling and traditional active learning (which reduces to random sampling when just starting) will most likely recover very few minority-class examples. To bootstrap the machine learning process, researchers have proposed tasking the crowd with finding or generating minority-class examples, but such strategies have their weaknesses as well. They are unnecessarily expensive in well-balanced domains, and they often yield samples from a biased distribution that is unrepresentative of the one being learned.This paper extends the traditional active learning framework by investigating the problem of intelligently switching between various crowdsourcing strategies for obtaining labeled training examples in order to optimally train a classifier. We start by analyzing several such strategies (e.g., annotate an example, generate a minority-class example, etc.), and then develop a novel, skew-robust algorithm, called MB-CB, for the control problem. Experiments show that our method outperforms state-of-the-art GL-Hybrid by up to 14.3 points in F1 AUC, across various domains and class-frequency settings.

Topics: HCOMP

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HOW TO CITE:

Christopher Lin,Mausam Mausam,Daniel Weld Active Learning with Unbalanced Classes and Example-Generation Queries Proceedings of the AAAI Conference on Human Computation and Crowdsourcing (2018) 98-107.

Christopher Lin,Mausam Mausam,Daniel Weld Active Learning with Unbalanced Classes and Example-Generation Queries HCOMP 2018, 98-107.

Christopher Lin,Mausam Mausam,Daniel Weld (2018). Active Learning with Unbalanced Classes and Example-Generation Queries. Proceedings of the AAAI Conference on Human Computation and Crowdsourcing, 98-107.

Christopher Lin,Mausam Mausam,Daniel Weld. Active Learning with Unbalanced Classes and Example-Generation Queries. Proceedings of the AAAI Conference on Human Computation and Crowdsourcing 2018 p.98-107.

Christopher Lin,Mausam Mausam,Daniel Weld. 2018. Active Learning with Unbalanced Classes and Example-Generation Queries. "Proceedings of the AAAI Conference on Human Computation and Crowdsourcing". 98-107.

Christopher Lin,Mausam Mausam,Daniel Weld. (2018) "Active Learning with Unbalanced Classes and Example-Generation Queries", Proceedings of the AAAI Conference on Human Computation and Crowdsourcing, p.98-107

Christopher Lin,Mausam Mausam,Daniel Weld, "Active Learning with Unbalanced Classes and Example-Generation Queries", HCOMP, p.98-107, 2018.

Christopher Lin,Mausam Mausam,Daniel Weld. "Active Learning with Unbalanced Classes and Example-Generation Queries". Proceedings of the AAAI Conference on Human Computation and Crowdsourcing, 2018, p.98-107.

Christopher Lin,Mausam Mausam,Daniel Weld. "Active Learning with Unbalanced Classes and Example-Generation Queries". Proceedings of the AAAI Conference on Human Computation and Crowdsourcing, (2018): 98-107.

Christopher Lin,Mausam Mausam,Daniel Weld. Active Learning with Unbalanced Classes and Example-Generation Queries. HCOMP[Internet]. 2018[cited 2023]; 98-107.


ISSN: 2769-1349


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