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Prior works formulate the extraction of event-specific arguments as a span extraction problem, where event arguments are explicit -- i.e. assumed to be contiguous spans of text in a document. In this study, we revisit this definition of…

Computation and Language · Computer Science 2024-10-07 Omar Sharif , Joseph Gatto , Madhusudan Basak , Sarah M. Preum

Social platforms have emerged as crucial platforms for distributing information and discussing social events, offering researchers an excellent opportunity to design and implement novel event detection frameworks. Identifying unspecified…

Computation and Language · Computer Science 2025-06-12 Mohammadali Sefidi Esfahani , Mohammad Akbari

Keyphrase extraction from a given document is the task of automatically extracting salient phrases that best describe the document. This paper proposes a novel unsupervised graph-based ranking method to extract high-quality phrases from a…

Information Retrieval · Computer Science 2022-01-27 Venktesh V , Mukesh Mohania , Vikram Goyal

Event detection in power systems aims to identify triggers and event types, which helps relevant personnel respond to emergencies promptly and facilitates the optimization of power supply strategies. However, the limited length of short…

Computation and Language · Computer Science 2022-11-16 Qian Li , Jianxin Li , Lihong Wang , Cheng Ji , Yiming Hei , Jiawei Sheng , Qingyun Sun , Shan Xue , Pengtao Xie

For monitoring crises, political events are extracted from the news. The large amount of unstructured full-text event descriptions makes a case-by-case analysis unmanageable, particularly for low-resource humanitarian aid organizations.…

Computation and Language · Computer Science 2023-05-08 Clément Lefebvre , Niklas Stoehr

Feature selection, an effective technique for dimensionality reduction, plays an important role in many machine learning systems. Supervised knowledge can significantly improve the performance. However, faced with the rapid growth of newly…

Computer Vision and Pattern Recognition · Computer Science 2021-07-15 Zheng Wang , Qiao Wang , Tingzhang Zhao , Xiaojun Ye

Zero-shot entity retrieval, aiming to link mentions to candidate entities under the zero-shot setting, is vital for many tasks in Natural Language Processing. Most existing methods represent mentions/entities via the sentence embeddings of…

Computation and Language · Computer Science 2022-11-22 Taiqiang Wu , Xingyu Bai , Weigang Guo , Weijie Liu , Siheng Li , Yujiu Yang

This paper studies zero-shot object recognition using event camera data. Guided by CLIP, which is pre-trained on RGB images, existing approaches achieve zero-shot object recognition by optimizing embedding similarities between event data…

Computer Vision and Pattern Recognition · Computer Science 2024-11-26 Yan Yang , Liyuan Pan , Dongxu Li , Liu Liu

Biomedical Event Extraction (BEE) is a challenging task that involves modeling complex relationships between fine-grained entities in biomedical text. BEE has traditionally been formulated as a classification problem. With recent…

Computation and Language · Computer Science 2025-02-24 Haohan Yuan , Siu Cheung Hui , Haopeng Zhang

Zero Shot Learning (ZSL) enables a learning model to classify instances of an unseen class during training. While most research in ZSL focuses on single-label classification, few studies have been done in multi-label ZSL, where an instance…

Machine Learning · Computer Science 2016-06-02 Ubai Sandouk , Ke Chen

We propose to leverage concept-level representations for complex event recognition in photographs given limited training examples. We introduce a novel framework to discover event concept attributes from the web and use that to extract…

Computer Vision and Pattern Recognition · Computer Science 2017-01-18 Unaiza Ahsan , Chen Sun , James Hays , Irfan Essa

Audio-visual generalized zero-shot learning is a rapidly advancing domain that seeks to understand the intricate relations between audio and visual cues within videos. The overarching goal is to leverage insights from seen classes to…

Computer Vision and Pattern Recognition · Computer Science 2024-07-19 Shentong Mo , Pedro Morgado

Recent works in Event Argument Extraction (EAE) have focused on improving model generalizability to cater to new events and domains. However, standard benchmarking datasets like ACE and ERE cover less than 40 event types and 25…

Computation and Language · Computer Science 2023-06-02 Tanmay Parekh , I-Hung Hsu , Kuan-Hao Huang , Kai-Wei Chang , Nanyun Peng

Event argument extraction (EAE) aims to extract arguments with given roles from texts, which have been widely studied in natural language processing. Most previous works have achieved good performance in specific EAE datasets with dedicated…

Computation and Language · Computer Science 2022-09-07 Jie Zhou , Qi Zhang , Qin Chen , Liang He , Xuanjing Huang

Contrarily to standard approaches to topic annotation, the technique used in this work does not centrally rely on some sort of -- possibly statistical -- keyword extraction. In fact, the proposed annotation algorithm uses a large scale…

Computation and Language · Computer Science 2007-05-23 Pierre Andrews , Martin Rajman

Event extraction requires high-quality expert human annotations, which are usually expensive. Therefore, learning a data-efficient event extraction model that can be trained with only a few labeled examples has become a crucial challenge.…

Computation and Language · Computer Science 2022-05-05 I-Hung Hsu , Kuan-Hao Huang , Elizabeth Boschee , Scott Miller , Prem Natarajan , Kai-Wei Chang , Nanyun Peng

Existing zero-shot learning (ZSL) models typically learn a projection function from a feature space to a semantic embedding space (e.g.~attribute space). However, such a projection function is only concerned with predicting the training…

Computer Vision and Pattern Recognition · Computer Science 2017-04-28 Elyor Kodirov , Tao Xiang , Shaogang Gong

Sound event detection (SED) is a task to detect sound events in an audio recording. One challenge of the SED task is that many datasets such as the Detection and Classification of Acoustic Scenes and Events (DCASE) datasets are weakly…

Sound · Computer Science 2020-08-25 Qiuqiang Kong , Yong Xu , Wenwu Wang , Mark D. Plumbley

Implicit event argument extraction (EAE) aims to identify arguments that could scatter over the document. Most previous work focuses on learning the direct relations between arguments and the given trigger, while the implicit relations with…

Computation and Language · Computer Science 2022-06-14 Jiaju Lin , Qin Chen , Jie Zhou , Jian Jin , Liang He

The goal of automatic sound event detection (SED) methods is to recognize what is happening in an audio signal and when it is happening. In practice, the goal is to recognize at what temporal instances different sounds are active within an…

Audio and Speech Processing · Electrical Eng. & Systems 2021-07-13 Annamaria Mesaros , Toni Heittola , Tuomas Virtanen , Mark D. Plumbley
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