Kyungho Kim
2023
Cross-task Knowledge Transfer for Extremely Weakly Supervised Text Classification
Seongmin Park
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Kyungho Kim
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Jihwa Lee
Findings of the Association for Computational Linguistics: ACL 2023
Text classification with extremely weak supervision (EWS) imposes stricter supervision constraints compared to regular weakly supervise classification. Absolutely no labeled training samples or hand-crafted rules specific to the evaluation data are allowed. Such restrictions limit state-of-the-art EWS classification methods to indirect weak labeling techniques that assign unnatural label uncertainty estimates. We present PLAT, a framework that creates weak labels by leveraging recent developments in zero-shot text classification. PLAT employs models trained for sub-tasks other than classification to label documents. Most importantly, PLAT refrains from assigning overly confident weak labels and improves soft-label training performance for downstream classifiers. Classifiers trained with PLAT significantly outperform those trained on weak labels generated by the previous state-of-the-art in extremely weakly supervised text classification.
2021
Query Generation for Multimodal Documents
Kyungho Kim
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Kyungjae Lee
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Seung-won Hwang
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Young-In Song
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Seungwook Lee
Proceedings of the 16th Conference of the European Chapter of the Association for Computational Linguistics: Main Volume
This paper studies the problem of generatinglikely queries for multimodal documents withimages. Our application scenario is enablingefficient “first-stage retrieval” of relevant doc-uments, by attaching generated queries to doc-uments before indexing. We can then indexthis expanded text to efficiently narrow downto candidate matches using inverted index, sothat expensive reranking can follow. Our eval-uation results show that our proposed multi-modal representation meaningfully improvesrelevance ranking. More importantly, ourframework can achieve the state of the art inthe first stage retrieval scenarios
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Co-authors
- Kyungjae Lee 1
- Seung-won Hwang 1
- Young-In Song 1
- Seungwook Lee 1
- Seongmin Park 1
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