Chinese Idiom Paraphrasing

TL;DR

This paper introduces Chinese Idiom Paraphrasing (CIP), a novel task to rephrase idiomatic sentences into non-idiomatic ones, enhancing Chinese NLP applications by creating a large dataset and proposing effective baseline methods.

Contribution

The study pioneers the CIP task, constructs a large-scale dataset, and develops new approaches that outperform baselines in idiom paraphrasing.

Findings

Proposed methods outperform baselines on CIP dataset

Established a large-scale CIP dataset with 115,530 sentence pairs

Demonstrated improved NLP task performance using CIP preprocessing

Abstract

Idioms, are a kind of idiomatic expression in Chinese, most of which consist of four Chinese characters. Due to the properties of non-compositionality and metaphorical meaning, Chinese Idioms are hard to be understood by children and non-native speakers. This study proposes a novel task, denoted as Chinese Idiom Paraphrasing (CIP). CIP aims to rephrase idioms-included sentences to non-idiomatic ones under the premise of preserving the original sentence's meaning. Since the sentences without idioms are easier handled by Chinese NLP systems, CIP can be used to pre-process Chinese datasets, thereby facilitating and improving the performance of Chinese NLP tasks, e.g., machine translation system, Chinese idiom cloze, and Chinese idiom embeddings. In this study, CIP task is treated as a special paraphrase generation task. To circumvent difficulties in acquiring annotations, we first establish a large-scale CIP dataset based on human and machine collaboration, which consists of 115,530 sentence pairs. We further deploy three baselines and two novel CIP approaches to deal with CIP problems. The results show that the proposed methods have better performances than the baselines based on the established CIP dataset.