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Named entity recognition (NER) is a vital task in spoken language understanding, which aims to identify mentions of named entities in text e.g., from transcribed speech. Existing neural models for NER rely mostly on dedicated word-level…

计算与语言 · 计算机科学 2019-09-24 Abdalghani Abujabal , Judith Gaspers

Document-level relation extraction aims to extract relations among multiple entity pairs from a document. Previously proposed graph-based or transformer-based models utilize the entities independently, regardless of global information among…

计算与语言 · 计算机科学 2023-01-27 Ningyu Zhang , Xiang Chen , Xin Xie , Shumin Deng , Chuanqi Tan , Mosha Chen , Fei Huang , Luo Si , Huajun Chen

Face clustering can provide pseudo-labels to the massive unlabeled face data and improve the performance of different face recognition models. The existing clustering methods generally aggregate the features within subgraphs that are often…

计算机视觉与模式识别 · 计算机科学 2023-04-24 Yuan Cao , Di Jiang , Guanqun Hou , Fan Deng , Xinjia Chen , Qiang Yang

Form understanding is a challenging problem which aims to recognize semantic entities from the input document and their hierarchical relations. Previous approaches face significant difficulty dealing with the complexity of the task, thus…

人工智能 · 计算机科学 2021-06-03 Tuan-Anh Nguyen Dang , Duc-Thanh Hoang , Quang-Bach Tran , Chih-Wei Pan , Thanh-Dat Nguyen

Conventional approaches to relation extraction usually require a fixed set of pre-defined relations. Such requirement is hard to meet in many real applications, especially when new data and relations are emerging incessantly and it is…

计算与语言 · 计算机科学 2019-03-27 Hong Wang , Wenhan Xiong , Mo Yu , Xiaoxiao Guo , Shiyu Chang , William Yang Wang

In the last few years, neural networks have been intensively used to develop meaningful distributed representations of words and contexts around them. When these representations, also known as "embeddings", are learned from unsupervised…

计算与语言 · 计算机科学 2019-08-07 Giuseppe Marra , Andrea Zugarini , Stefano Melacci , Marco Maggini

Eliciting semantic similarity between concepts in the biomedical domain remains a challenging task. Recent approaches founded on embedding vectors have gained in popularity as they risen to efficiently capture semantic relationships The…

计算与语言 · 计算机科学 2018-12-07 Saïd Abdeddaïm , Sylvestre Vimard , Lina Fatima Soualmia

Many modern NLP systems rely on word embeddings, previously trained in an unsupervised manner on large corpora, as base features. Efforts to obtain embeddings for larger chunks of text, such as sentences, have however not been so…

计算与语言 · 计算机科学 2018-07-10 Alexis Conneau , Douwe Kiela , Holger Schwenk , Loic Barrault , Antoine Bordes

While paragraph embedding models are remarkably effective for downstream classification tasks, what they learn and encode into a single vector remains opaque. In this paper, we investigate a state-of-the-art paragraph embedding method…

计算与语言 · 计算机科学 2019-06-11 Tu Vu , Mohit Iyyer

We analyze a word embedding method in supervised tasks. It maps words on a sphere such that words co-occurring in similar contexts lie closely. The similarity of contexts is measured by the distribution of substitutes that can fill them. We…

计算与语言 · 计算机科学 2014-07-28 Volkan Cirik , Deniz Yuret

CNN feature spaces can be linearly mapped and consequently are often interchangeable. This equivalence holds across variations in architectures, training datasets, and network tasks. Specifically, we mapped between 10 image-classification…

计算机视觉与模式识别 · 计算机科学 2021-02-15 David McNeely-White , Benjamin Sattelberg , Nathaniel Blanchard , Ross Beveridge

Networks are ubiquitous structure that describes complex relationships between different entities in the real world. As a critical component of prediction task over nodes in networks, learning the feature representation of nodes has become…

机器学习 · 计算机科学 2018-09-10 Hansheng Xue , Jiajie Peng , Xuequn Shang

This paper proposes a new model for extracting an interpretable sentence embedding by introducing self-attention. Instead of using a vector, we use a 2-D matrix to represent the embedding, with each row of the matrix attending on a…

计算与语言 · 计算机科学 2017-03-10 Zhouhan Lin , Minwei Feng , Cicero Nogueira dos Santos , Mo Yu , Bing Xiang , Bowen Zhou , Yoshua Bengio

We introduce a transductive model for parsing into Universal Decompositional Semantics (UDS) representations, which jointly learns to map natural language utterances into UDS graph structures and annotate the graph with decompositional…

计算与语言 · 计算机科学 2020-05-05 Elias Stengel-Eskin , Aaron Steven White , Sheng Zhang , Benjamin Van Durme

We demonstrate that frequently appearing objects can be discovered by training randomly sampled patches from a small number of images (100 to 200) by self-supervision. Key to this approach is the pattern space, a latent space of patterns…

计算机视觉与模式识别 · 计算机科学 2021-06-17 Hankyu Moon , Heng Hao , Sima Didari , Jae Oh Woo , Patrick Bangert

Stance detection is an important task, supporting many downstream tasks such as discourse parsing and modeling the propagation of fake news, rumors, and science denial. In this paper, we propose a novel framework for stance detection. Our…

计算与语言 · 计算机科学 2021-12-21 Ron Korenblum Pick , Vladyslav Kozhukhov , Dan Vilenchik , Oren Tsur

The large size and fast growth of data repositories, such as data lakes, has spurred the need for data discovery to help analysts find related data. The problem has become challenging as (i) a user typically does not know what datasets…

数据库 · 计算机科学 2023-01-16 Tianji Cong , Fatemeh Nargesian , H. V. Jagadish

In this paper we present a unified framework for modeling multi-relational representations, scoring, and learning, and conduct an empirical study of several recent multi-relational embedding models under the framework. We investigate the…

计算与语言 · 计算机科学 2014-11-18 Bishan Yang , Wen-tau Yih , Xiaodong He , Jianfeng Gao , Li Deng

Large-scale multi-relational embedding refers to the task of learning the latent representations for entities and relations in large knowledge graphs. An effective and scalable solution for this problem is crucial for the true success of…

机器学习 · 计算机科学 2017-07-07 Hanxiao Liu , Yuexin Wu , Yiming Yang

Textual network embeddings aim to learn a low-dimensional representation for every node in the network so that both the structural and textual information from the networks can be well preserved in the representations. Traditionally, the…

社会与信息网络 · 计算机科学 2021-08-13 Zenan Xu , Qinliang Su , Xiaojun Quan , Weijia Zhang