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We hypothesize that explicit integration of contextual information into an Multi-task Learning framework would emphasize the significance of context for boosting performance in jointly learning Named Entity Recognition (NER) and Relation…

计算与语言 · 计算机科学 2021-02-23 Paul Barry , Sam Henry , Meliha Yetisgen , Bridget McInnes , Ozlem Uzuner

While spatio-temporal Graph Neural Networks (GNNs) excel at modeling recurring traffic patterns, their reliability plummets during non-recurring events like accidents. This failure occurs because GNNs are fundamentally correlational models,…

人工智能 · 计算机科学 2025-11-18 Luyao Niu , Zepu Wang , Shuyi Guan , Yang Liu , Peng Sun

Relation extraction is used to populate knowledge bases that are important to many applications. Prior datasets used to train relation extraction models either suffer from noisy labels due to distant supervision, are limited to certain…

计算与语言 · 计算机科学 2021-02-22 Robert Ormandi , Mohammad Saleh , Erin Winter , Vinay Rao

Events are inter-related in documents. Motivated by the one-sense-per-discourse theory, we hypothesize that a participant tends to play consistent roles across multiple events in the same document. However recent work on document-level…

计算与语言 · 计算机科学 2022-05-31 Qi Zeng , Qiusi Zhan , Heng Ji

This paper presents DWIE, the 'Deutsche Welle corpus for Information Extraction', a newly created multi-task dataset that combines four main Information Extraction (IE) annotation subtasks: (i) Named Entity Recognition (NER), (ii)…

计算与语言 · 计算机科学 2021-03-10 Klim Zaporojets , Johannes Deleu , Chris Develder , Thomas Demeester

Event Temporal Relation Extraction (ETRE) is paramount but challenging. Within a discourse, event pairs are situated at different distances or the so-called proximity bands. The temporal ordering communicated about event pairs where at more…

计算与语言 · 计算机科学 2024-07-29 Hao-Ren Yao , Luke Breitfeller , Aakanksha Naik , Chunxiao Zhou , Carolyn Rose

Multi-modal Event Reasoning (MMER) endeavors to endow machines with the ability to comprehend intricate event relations across diverse data modalities. MMER is fundamental and underlies a wide broad of applications. Despite extensive…

人工智能 · 计算机科学 2024-04-17 Zhengwei Tao , Zhi Jin , Junqiang Huang , Xiancai Chen , Xiaoying Bai , Haiyan Zhao , Yifan Zhang , Chongyang Tao

Recent large vision-language models have achieved strong performance on short- and medium-length video understanding, yet they remain inadequate for ultra-long or even infinite video reasoning, where models must preserve coherent memory…

人工智能 · 计算机科学 2026-05-08 Peizheng Yan , Yu Zhao , Liang Xie , Juntong Qi , Mingming Wang , Erwei Yin

Document-level Relation Extraction (DRE) aims to recognize the relations between two entities. The entity may correspond to multiple mentions that span beyond sentence boundary. Few previous studies have investigated the mention…

计算与语言 · 计算机科学 2022-01-14 Chao Zhao , Daojian Zeng , Lu Xu , Jianhua Dai

Document-level Relation Extraction (RE) requires extracting relations expressed within and across sentences. Recent works show that graph-based methods, usually constructing a document-level graph that captures document-aware interactions,…

计算与语言 · 计算机科学 2021-06-08 Damai Dai , Jing Ren , Shuang Zeng , Baobao Chang , Zhifang Sui

Event extraction (EE), which acquires structural event knowledge from texts, can be divided into two sub-tasks: event type classification and element extraction (namely identifying triggers and arguments under different role patterns). As…

计算与语言 · 计算机科学 2022-08-19 Qian Li , Shu Guo , Jia Wu , Jianxin Li , Jiawei Sheng , Lihong Wang , Xiaohan Dong , Hao Peng

The relation extraction (RE) in complex scenarios faces challenges such as diverse relation types and ambiguous relations between entities within a single sentence, leading to the poor performance of pure "text-in, text-out" language models…

计算与语言 · 计算机科学 2024-09-04 Yuchen Shi , Guochao Jiang , Tian Qiu , Deqing Yang

Few-shot relation extraction (FSRE) is of great importance in long-tail distribution problem, especially in special domain with low-resource data. Most existing FSRE algorithms fail to accurately classify the relations merely based on the…

计算与语言 · 计算机科学 2021-06-07 Shan Yang , Yongfei Zhang , Guanglin Niu , Qinghua Zhao , Shiliang Pu

Extracting biographical information from online documents is a popular research topic among the information extraction (IE) community. Various natural language processing (NLP) techniques such as text classification, text summarisation and…

信息检索 · 计算机科学 2022-05-03 Alistair Plum , Tharindu Ranasinghe , Spencer Jones , Constantin Orasan , Ruslan Mitkov

Distant Supervised Relation Extraction (DSRE) is usually formulated as a problem of classifying a bag of sentences that contain two query entities, into the predefined relation classes. Most existing methods consider those relation classes…

计算与语言 · 计算机科学 2019-12-16 Yanjie Gou , Yinjie Lei , Lingqiao Liu , Pingping Zhang , Xi Peng

Along with the increasing use of unmanned aerial vehicles (UAVs), large volumes of aerial videos have been produced. It is unrealistic for humans to screen such big data and understand their contents. Hence methodological research on the…

计算机视觉与模式识别 · 计算机科学 2020-06-26 Lichao Mou , Yuansheng Hua , Pu Jin , Xiao Xiang Zhu

Document-level relation extraction faces two overlooked challenges: long-tail problem and multi-label problem. Previous work focuses mainly on obtaining better contextual representations for entity pairs, hardly address the above…

计算与语言 · 计算机科学 2022-12-21 Ridong Han , Tao Peng , Benyou Wang , Lu Liu , Xiang Wan

Relation extraction (RE) aims to identify the semantic relations between named entities in text. Recent years have witnessed it raised to the document level, which requires complex reasoning with entities and mentions throughout an entire…

计算与语言 · 计算机科学 2020-09-23 Difeng Wang , Wei Hu , Ermei Cao , Weijian Sun

Medical event prediction (MEP) is a fundamental task in the medical domain, which needs to predict medical events, including medications, diagnosis codes, laboratory tests, procedures, outcomes, and so on, according to historical medical…

机器学习 · 计算机科学 2022-05-02 Sicen Liu , Xiaolong Wang , Yang Xiang , Hui Xu , Hui Wang , Buzhou Tang

Event extraction (EE) has considerably benefited from pre-trained language models (PLMs) by fine-tuning. However, existing pre-training methods have not involved modeling event characteristics, resulting in the developed EE models cannot…

计算与语言 · 计算机科学 2021-06-01 Ziqi Wang , Xiaozhi Wang , Xu Han , Yankai Lin , Lei Hou , Zhiyuan Liu , Peng Li , Juanzi Li , Jie Zhou