흐름이 있는 문서에 적합한 비지도학습 추상 요약 방법
Unsupervised Abstractive Summarization Method that Suitable for Documents with Flows
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참고문헌
키워드
초록
최근 Encoder-Decoder를 기반한 요약은 거의 인간 수준에 도달하였다. 하지만 이는 영어, 중국어 등 수백만 건의 데이터세트가 잘 갖추어진주류 언어권에서만 활용 가능하며 데이터세트가 구축되지 않은 비주류 언어권에서는 활용하지 못하는 한계가 있다. 또한, 문서의 일부 영역에초점 하여 요약하는 편향의 문제를 갖고 있어 동화나 소설과 같이 흐름이 있는 문서에는 적합하지 않다. 본 논문에서는 두 개의 Discriminator가있는 GAN을 통해 비지도 학습 기반의 추상 요약을 하며, 가이드 토큰의 추출과 주입을 통해 편향 문제를 개선하는 추출 요약과 추상 요약을 혼합한하이브리드 요약 방법을 제안한다. CNN/Daily Mail 데이터세트를 통해 모델을 평가하여 객관적인 타당성을 검증하고 비주류 언어 중 하나인 한국어에서도 유효한 성능을 보인다는 것을 입증한다.
Abstract
Recently, a breakthrough has been made in the NLP area by Transformer techniques based on encoder-decoder. However, this onlycan be used in mainstream languages where millions of dataset are well-equipped, such as English and Chinese, and there is a limitationthat it cannot be used in non-mainstream languages where dataset are not established. In addition, there is a deflection problem thatfocuses on the beginning of the document in mechanical summarization. Therefore, these methods are not suitable for documents withflows such as fairy tales and novels. In this paper, we propose a hybrid summarization method that does not require a dataset and improvesthe deflection problem using GAN with two adaptive discriminators. We evaluate our model on the CNN/Daily Mail dataset to verifyan objective validity. Also, we proved that the model has valid performance in Korean, one of the non-mainstream languages.
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