中文
相关论文

相关论文: Reinforcement Learning-based N-ary Cross-Sentence …

200 篇论文

In this study, a novel method for extracting named entities and relations from unstructured text based on the table representation is presented. By using contextualized word embeddings, the proposed method computes representations for…

计算与语言 · 计算机科学 2022-01-28 Youmi Ma , Tatsuya Hiraoka , Naoaki Okazaki

The emergence of structured databases for Question Answering (QA) systems has led to developing methods, in which the problem of learning the correct answer efficiently is based on a linking task between the constituents of the question and…

机器学习 · 计算机科学 2020-03-05 Hamid Zafar , Maryam Tavakol , Jens Lehmann

To disclose overlapped multiple relations from a sentence still keeps challenging. Most current works in terms of neural models inconveniently assuming that each sentence is explicitly mapped to a relation label, cannot handle multiple…

计算与语言 · 计算机科学 2018-11-13 Xinsong Zhang , Pengshuai Li , Weijia Jia , Hai Zhao

Distant supervision for relation extraction heavily suffers from the wrong labeling problem. To alleviate this issue in news data with the timestamp, we take a new factor time into consideration and propose a novel time-aware distant…

计算与语言 · 计算机科学 2019-03-11 Tianwen Jiang , Sendong Zhao , Jing Liu , Jin-Ge Yao , Ming Liu , Bing Qin , Ting Liu , Chin-Yew Lin

The joint entity and relation extraction task aims to extract all relational triples from a sentence. In essence, the relational triples contained in a sentence are unordered. However, previous seq2seq based models require to convert the…

计算与语言 · 计算机科学 2020-11-06 Dianbo Sui , Yubo Chen , Kang Liu , Jun Zhao , Xiangrong Zeng , Shengping Liu

Regression methods assume that accurate labels are available for training. However, in certain scenarios, obtaining accurate labels may not be feasible, and relying on multiple specialists with differing opinions becomes necessary. Existing…

机器学习 · 统计学 2023-05-15 Milene Regina dos Santos , Rafael Izbicki

We describe an attentive encoder that combines tree-structured recursive neural networks and sequential recurrent neural networks for modelling sentence pairs. Since existing attentive models exert attention on the sequential structure, we…

计算与语言 · 计算机科学 2016-10-11 Yao Zhou , Cong Liu , Yan Pan

Retrieval augmented methods have shown promising results in various classification tasks. However, existing methods focus on retrieving extra context to enrich the input, which is noise sensitive and non-expandable. In this paper, following…

计算与语言 · 计算机科学 2023-04-12 Xinnian Liang , Shuangzhi Wu , Hui Huang , Jiaqi Bai , Chao Bian , Zhoujun Li

Extractive summarization and imbalanced multi-label classification often require vast amounts of training data to avoid overfitting. In situations where training data is expensive to generate, leveraging information between tasks is an…

计算与语言 · 计算机科学 2019-03-19 John Brandt

To reduce human annotations for relation extraction (RE) tasks, distantly supervised approaches have been proposed, while struggling with low performance. In this work, we propose a novel DSRE-NLI framework, which considers both distant…

计算与语言 · 计算机科学 2022-08-02 Kang Zhou , Qiao Qiao , Yuepei Li , Qi Li

Relation extraction (RE) consists in categorizing the relationship between entities in a sentence. A recent paradigm to develop relation extractors is Distant Supervision (DS), which allows the automatic creation of new datasets by taking…

计算与语言 · 计算机科学 2020-10-20 Johny Moreira , Chaina Oliveira , David Macêdo , Cleber Zanchettin , Luciano Barbosa

Contrastive pre-training on distant supervision has shown remarkable effectiveness in improving supervised relation extraction tasks. However, the existing methods ignore the intrinsic noise of distant supervision during the pre-training…

计算与语言 · 计算机科学 2023-02-13 Zhen Wan , Fei Cheng , Qianying Liu , Zhuoyuan Mao , Haiyue Song , Sadao Kurohashi

Connections between relations in relation extraction, which we call class ties, are common. In distantly supervised scenario, one entity tuple may have multiple relation facts. Exploiting class ties between relations of one entity tuple…

人工智能 · 计算机科学 2017-08-08 Hai Ye , Wenhan Chao , Zhunchen Luo , Zhoujun Li

Cross-situational word learning is based on the notion that a learner can determine the referent of a word by finding something in common across many observed uses of that word. Here we propose an adaptive learning algorithm that contains a…

神经元与认知 · 定量生物学 2013-11-20 Paulo F. C. Tilles , Jose F. Fontanari

Document-level relation extraction aims to discover relations between entities across a whole document. How to build the dependency of entities from different sentences in a document remains to be a great challenge. Current approaches…

计算与语言 · 计算机科学 2021-03-16 Jiaxin Pan , Min Peng , Yiyan Zhang

Jointly extracting entity pairs and their relations is challenging when working on distantly-supervised data with ambiguous or noisy labels. To mitigate such impact, we propose uncertainty-aware bootstrap learning, which is motivated by the…

计算与语言 · 计算机科学 2023-06-12 Yufei Li , Xiao Yu , Yanchi Liu , Haifeng Chen , Cong Liu

This paper proposes an approach to cross-language sentence selection in a low-resource setting. It uses data augmentation and negative sampling techniques on noisy parallel sentence data to directly learn a cross-lingual embedding-based…

计算与语言 · 计算机科学 2021-06-07 Yanda Chen , Chris Kedzie , Suraj Nair , Petra Galuščáková , Rui Zhang , Douglas W. Oard , Kathleen McKeown

In implicit discourse relation classification, we want to predict the relation between adjacent sentences in the absence of any overt discourse connectives. This is challenging even for humans, leading to shortage of annotated data, a fact…

计算与语言 · 计算机科学 2021-06-08 Murathan Kurfalı , Robert Östling

Recent work on language modelling has shifted focus from count-based models to neural models. In these works, the words in each sentence are always considered in a left-to-right order. In this paper we show how we can improve the…

计算与语言 · 计算机科学 2015-07-07 Piotr Mirowski , Andreas Vlachos

Inferring the probability distribution of sentences or word sequences is a key process in natural language processing. While word-level language models (LMs) have been widely adopted for computing the joint probabilities of word sequences,…

计算与语言 · 计算机科学 2021-03-16 Heewoong Park , Sukhyun Cho , Jonghun Park