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The recognition of pharmacological substances, compounds and proteins is an essential preliminary work for the recognition of relations between chemicals and other biomedically relevant units. In this paper, we describe an approach to Task…

Computation and Language · Computer Science 2019-10-09 Manuel Stoeckel , Wahed Hemati , Alexander Mehler

One essential task in information extraction from the medical corpus is drug name recognition. Compared with text sources come from other domains, the medical text is special and has unique characteristics. In addition, the medical text…

Computation and Language · Computer Science 2016-10-07 Sadikin Mujiono , Mohamad Ivan Fanany , Chan Basaruddin

Character-level patterns have been widely used as features in English Named Entity Recognition (NER) systems. However, to date there has been no direct investigation of the inherent differences between name and non-name tokens in text, nor…

Computation and Language · Computer Science 2018-09-21 Xiaodong Yu , Stephen Mayhew , Mark Sammons , Dan Roth

Named entity recognition (NER) in Chinese is essential but difficult because of the lack of natural delimiters. Therefore, Chinese Word Segmentation (CWS) is usually considered as the first step for Chinese NER. However, models based on…

Computation and Language · Computer Science 2020-07-16 Yuying Zhu , Guoxin Wang , Börje F. Karlsson

Continual Named Entity Recognition (CNER) is a burgeoning area, which involves updating an existing model by incorporating new entity types sequentially. Nevertheless, continual learning approaches are often severely afflicted by…

Computation and Language · Computer Science 2023-10-24 Duzhen Zhang , Wei Cong , Jiahua Dong , Yahan Yu , Xiuyi Chen , Yonggang Zhang , Zhen Fang

Named entity recognition in real-world applications suffers from the diversity of entity types, the emergence of new entity types, and the lack of high-quality annotations. To address the above problems, this paper proposes an in-context…

Computation and Language · Computer Science 2023-05-29 Jiawei Chen , Yaojie Lu , Hongyu Lin , Jie Lou , Wei Jia , Dai Dai , Hua Wu , Boxi Cao , Xianpei Han , Le Sun

Named Entity Recognition (NER) is a fundamental task in the fields of natural language processing and information extraction. NER has been widely used as a standalone tool or an essential component in a variety of applications such as…

Computation and Language · Computer Science 2020-11-25 Vladislav Mikhailov , Tatiana Shavrina

State of the art Named Entity Recognition (NER) models have achieved an impressive ability to extract common phrases from text that belong to labels such as location, organization, time, and person. However, typical NER systems that rely on…

Computation and Language · Computer Science 2024-01-24 Alexandra Loessberg-Zahl

Contextual embeddings, such as ELMo and BERT, move beyond global word representations like Word2Vec and achieve ground-breaking performance on a wide range of natural language processing tasks. Contextual embeddings assign each word a…

Computation and Language · Computer Science 2020-04-14 Qi Liu , Matt J. Kusner , Phil Blunsom

Biomedical named entity recognition (NER) is a critial task that aims to identify structured information in clinical text, which is often replete with complex, technical terms and a high degree of variability. Accurate and reliable NER can…

Computation and Language · Computer Science 2023-05-30 Zhiyi Li , Shengjie Zhang , Yujie Song , Jungyeul Park

The way we analyse clinical texts has undergone major changes over the last years. The introduction of language models such as BERT led to adaptations for the (bio)medical domain like PubMedBERT and ClinicalBERT. These models rely on large…

Computation and Language · Computer Science 2023-09-15 Tom van Sonsbeek , Xiantong Zhen , Marcel Worring

In recent years, word embeddings have been surprisingly effective at capturing intuitive characteristics of the words they represent. These vectors achieve the best results when training corpora are extremely large, sometimes billions of…

Computation and Language · Computer Science 2017-12-06 Willie Boag , Hassan Kané

Background Medical and life science research generates millions of publications, and it is a great challenge for researchers to utilize this information in full since its scale and complexity greatly surpasses human reading capabilities.…

Named Entity Recognition (NER) is a fundamental task in natural language processing that involves identifying and classifying named entities in text. But much work hasn't been done for complex named entity recognition in Bangla, despite…

Computation and Language · Computer Science 2023-03-20 HAZ Sameen Shahgir , Ramisa Alam , Md. Zarif Ul Alam

Biomedical events describe complex interactions between various biomedical entities. Event trigger is a word or a phrase which typically signifies the occurrence of an event. Event trigger identification is an important first step in all…

Computation and Language · Computer Science 2017-05-29 Patchigolla V S S Rahul , Sunil Kumar Sahu , Ashish Anand

One of the long-standing challenges in lexical semantics consists in learning representations of words which reflect their semantic properties. The remarkable success of word embeddings for this purpose suggests that high-quality…

Computation and Language · Computer Science 2021-06-16 Yixiao Wang , Zied Bouraoui , Luis Espinosa Anke , Steven Schockaert

Natural language tasks like Named Entity Recognition (NER) in the clinical domain on non-English texts can be very time-consuming and expensive due to the lack of annotated data. Cross-lingual transfer (CLT) is a way to circumvent this…

Computation and Language · Computer Science 2023-06-08 Xavier Fontaine , Félix Gaschi , Parisa Rastin , Yannick Toussaint

We cast nested named entity recognition (NNER) as a sequence labeling task by leveraging prior work that linearizes constituency structures, effectively reducing the complexity of this structured prediction problem to straightforward token…

Computation and Language · Computer Science 2025-09-30 Alberto Muñoz-Ortiz , David Vilares , Caio Corro , Carlos Gómez-Rodríguez

Biomedical association studies are increasingly done using clinical concepts, and in particular diagnostic codes from clinical data repositories as phenotypes. Clinical concepts can be represented in a meaningful, vector space using word…

Quantitative Methods · Quantitative Biology 2018-11-06 Brett K. Beaulieu-Jones , Isaac S. Kohane , Andrew L. Beam

Contextualised word embeddings generated from Neural Language Models (NLMs), such as BERT, represent a word with a vector that considers the semantics of the target word as well its context. On the other hand, static word embeddings such as…

Computation and Language · Computer Science 2021-10-07 Yi Zhou , Danushka Bollegala