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Background: Identifying relationships between clinical events and temporal expressions is a key challenge in meaningfully analyzing clinical text for use in advanced AI applications. While previous studies exist, the state-of-the-art…

计算与语言 · 计算机科学 2020-04-15 Hong Guan , Jianfu Li , Hua Xu , Murthy Devarakonda

The standard BERT adopts subword-based tokenization, which may break a word into two or more wordpieces (e.g., converting "lossless" to "loss" and "less"). This will bring inconvenience in following situations: (1) what is the best way to…

计算与语言 · 计算机科学 2022-02-25 Zhangyin Feng , Duyu Tang , Cong Zhou , Junwei Liao , Shuangzhi Wu , Xiaocheng Feng , Bing Qin , Yunbo Cao , Shuming Shi

We present ReasonBert, a pre-training method that augments language models with the ability to reason over long-range relations and multiple, possibly hybrid contexts. Unlike existing pre-training methods that only harvest learning signals…

计算与语言 · 计算机科学 2021-09-13 Xiang Deng , Yu Su , Alyssa Lees , You Wu , Cong Yu , Huan Sun

Transformers \citep{vaswani2017attention} have gradually become a key component for many state-of-the-art natural language representation models. A recent Transformer based model- BERT \citep{devlin2018bert} achieved state-of-the-art…

计算与语言 · 计算机科学 2020-05-15 Ashish Khetan , Zohar Karnin

Recently, pre-trained language representation flourishes as the mainstay of the natural language understanding community, e.g., BERT. These pre-trained language representations can create state-of-the-art results on a wide range of…

机器学习 · 计算机科学 2019-12-24 Fu-Ming Guo , Sijia Liu , Finlay S. Mungall , Xue Lin , Yanzhi Wang

Although BERT is widely used by the NLP community, little is known about its inner workings. Several attempts have been made to shed light on certain aspects of BERT, often with contradicting conclusions. A much raised concern focuses on…

计算与语言 · 计算机科学 2020-10-13 Nikolaos Manginas , Ilias Chalkidis , Prodromos Malakasiotis

This study compares the effectiveness and robustness of multi-class categorization of Amazon product data using transfer learning on pre-trained contextualized language models. Specifically, we fine-tuned BERT and XLNet, two bidirectional…

机器学习 · 统计学 2019-09-24 Xinyi Liu , Artit Wangperawong

Although pre-trained language models (PLMs) have achieved state-of-the-art performance on various natural language processing (NLP) tasks, they are shown to be lacking in knowledge when dealing with knowledge driven tasks. Despite the many…

计算与语言 · 计算机科学 2022-08-02 Qianglong Chen , Feng-Lin Li , Guohai Xu , Ming Yan , Ji Zhang , Yin Zhang

Pre-trained universal feature extractors, such as BERT for natural language processing and VGG for computer vision, have become effective methods for improving deep learning models without requiring more labeled data. While effective,…

计算与语言 · 计算机科学 2020-05-18 Mitchell A. Gordon , Kevin Duh , Nicholas Andrews

The United States has experienced a significant increase in violent extremism, prompting the need for automated tools to detect and limit the spread of extremist ideology online. This study evaluates the performance of Bidirectional Encoder…

计算与语言 · 计算机科学 2024-08-30 Beidi Dong , Jin R. Lee , Ziwei Zhu , Balassubramanian Srinivasan

With the development of deep learning and Transformer-based pre-trained models like BERT, the accuracy of many NLP tasks has been dramatically improved. However, the large number of parameters and computations also pose challenges for their…

计算与语言 · 计算机科学 2022-12-07 Siyuan Lu , Chenchen Zhou , Keli Xie , Jun Lin , Zhongfeng Wang

With the capability of modeling bidirectional contexts, denoising autoencoding based pretraining like BERT achieves better performance than pretraining approaches based on autoregressive language modeling. However, relying on corrupting the…

计算与语言 · 计算机科学 2020-01-03 Zhilin Yang , Zihang Dai , Yiming Yang , Jaime Carbonell , Ruslan Salakhutdinov , Quoc V. Le

Pretrained language models are promising particularly for low-resource languages as they only require unlabelled data. However, training existing models requires huge amounts of compute, while pretrained cross-lingual models often…

计算与语言 · 计算机科学 2020-06-05 Julian Martin Eisenschlos , Sebastian Ruder , Piotr Czapla , Marcin Kardas , Sylvain Gugger , Jeremy Howard

We propose a practical scheme to train a single multilingual sequence labeling model that yields state of the art results and is small and fast enough to run on a single CPU. Starting from a public multilingual BERT checkpoint, our final…

计算与语言 · 计算机科学 2019-09-04 Henry Tsai , Jason Riesa , Melvin Johnson , Naveen Arivazhagan , Xin Li , Amelia Archer

BERT-style models pre-trained on the general corpus (e.g., Wikipedia) and fine-tuned on specific task corpus, have recently emerged as breakthrough techniques in many NLP tasks: question answering, text classification, sequence labeling and…

信息检索 · 计算机科学 2022-08-23 Yiming Qiu , Chenyu Zhao , Han Zhang , Jingwei Zhuo , Tianhao Li , Xiaowei Zhang , Songlin Wang , Sulong Xu , Bo Long , Wen-Yun Yang

Large language models can produce powerful contextual representations that lead to improvements across many NLP tasks. Since these models are typically guided by a sequence of learned self attention mechanisms and may comprise undesired…

计算与语言 · 计算机科学 2019-10-14 Benjamin Hoover , Hendrik Strobelt , Sebastian Gehrmann

This paper presents EstBERT, a large pretrained transformer-based language-specific BERT model for Estonian. Recent work has evaluated multilingual BERT models on Estonian tasks and found them to outperform the baselines. Still, based on…

计算与语言 · 计算机科学 2021-04-29 Hasan Tanvir , Claudia Kittask , Sandra Eiche , Kairit Sirts

Training vision or language models on large datasets can take days, if not weeks. We show that averaging the weights of the k latest checkpoints, each collected at the end of an epoch, can speed up the training progression in terms of loss…

机器学习 · 计算机科学 2022-10-07 Jean Kaddour

BERT has achieved impressive performance in several NLP tasks. However, there has been limited investigation on its adaptation guidelines in specialised domains. Here we focus on the legal domain, where we explore several approaches for…

计算与语言 · 计算机科学 2020-10-07 Ilias Chalkidis , Manos Fergadiotis , Prodromos Malakasiotis , Nikolaos Aletras , Ion Androutsopoulos

In this paper, we introduce TextBrewer, an open-source knowledge distillation toolkit designed for natural language processing. It works with different neural network models and supports various kinds of supervised learning tasks, such as…

计算与语言 · 计算机科学 2020-12-14 Ziqing Yang , Yiming Cui , Zhipeng Chen , Wanxiang Che , Ting Liu , Shijin Wang , Guoping Hu