We present an approach for recursively splitting and rephrasing complex English sentences into a novel semantic hierarchy of simplified sentences, with each of them presenting a more regular structure that may facilitate a wide variety of artificial intelligence tasks, such as machine translation (MT) or information extraction (IE). Using a set of hand-crafted transformation rules, input sentences are recursively transformed into a two-layered hierarchical representation in the form of core sentences and accompanying contexts that are linked via rhetorical relations. In this way, the semantic relationship of the decomposed constituents is preserved in the output, maintaining its interpretability for downstream applications. Both a thorough manual analysis and automatic evaluation across three datasets from two different domains demonstrate that the proposed syntactic simplification approach outperforms the state of the art in structural text simplification. Moreover, an extrinsic evaluation shows that when applying our framework as a preprocessing step the performance of state-of-the-art Open IE systems can be improved by up to 346% in precision and 52% in recall. To enable reproducible research, all code is provided online.
Exploring Anisotropy and Outliers in Multilingual Language Models for Cross-Lingual Semantic Sentence Similarity
Center for Information and Language Processing, LMU Munich（慕尼黑大学信息与语言处理中心）；Munich Centre for Machine Learning (MCML)（慕尼黑机器学习中心（MCML））；Faculty of Mathematics and Physics, Charles University（查理大学数学与物理学院）
Hierarchical Local-Global Transformer for Temporal Sentence Grounding
Hubei Engineering Research Center on Big Data Security, School of Cyber Science and Engineering, Huazhong University of Science and Technology（大数据安全湖北工程研究中心，华中科技大学网络安全科学与工程学院）；Wangxuan Institute of Computer fTechnology, Peking University（王宣计算机技术研究院，北京大学）；School of software, Dalian University of Technology（软件学院，大连理工大学）；School of Computer Science, and Technology, Huazhong University of Science, and Technology（计算机科学与技术学院，华中科技大学）
