Evidence map›Paper›PMID 24347408›Full record

ArticleJournal of the American Medical Informatics Association : JAMIA

A comprehensive study of named entity recognition in Chinese clinical text.

Jianbo Lei, Buzhou Tang, Xueqin Lu, Kaihua Gao, Min Jiang, Hua Xu

Open access · bronzeAbstract read
In one paragraph

Article in Journal of the American Medical Informatics Association : JAMIA. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed, 2 pooled it
10.5field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

45 citing papers in PubMed, 2 syntheses or guidelines pooled it, 191 citations in OpenAlex.

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  13. Improving the Transferability of Clinical Note Section Classification Models with BERT and Large Language Model Ensembles.Proceedings of the conference. Association for Computational Linguistics. Meeting · 2023
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 2 countries.

Jianbo LeiCenter for Medical Informatics, Peking University, Beijing, China The University of Texas School of Biomedical Informatics at Houston, Houston, Texas, USA.
Buzhou TangThe University of Texas School of Biomedical Informatics at Houston, Houston, Texas, USA Department of Computer Science, Harbin Institute of Technology Shenzhen Graduate School, Shenzhen, Guangdong, China.
Xueqin LuCenter for Medical Informatics, Peking University, Beijing, China.
Kaihua GaoCenter for Medical Informatics, Peking University, Beijing, China.
Min JiangThe University of Texas School of Biomedical Informatics at Houston, Houston, Texas, USA.
Hua XuThe University of Texas School of Biomedical Informatics at Houston, Houston, Texas, USA.ORCID http://orcid.org/0000-0001-9730-7276
Peking University · CNUniversity of Houston · USHarbin Institute of Technology · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveNamed entity recognition (NER) is one of the fundamental tasks in natural language processing. In the medical domain, there have been a number of studies on NER in English clinical notes; however, very limited NER research has been carried out on clinical notes written in Chinese. The goal of this study was to systematically investigate features and machine learning algorithms for NER in Chinese clinical text. MATERIALS AND

methodsWe randomly selected 400 admission notes and 400 discharge summaries from Peking Union Medical College Hospital in China. For each note, four types of entity-clinical problems, procedures, laboratory test, and medications-were annotated according to a predefined guideline. Two-thirds of the 400 notes were used to train the NER systems and one-third for testing. We investigated the effects of different types of feature including bag-of-characters, word segmentation, part-of-speech, and section information, and different machine learning algorithms including conditional random fields (CRF), support vector machines (SVM), maximum entropy (ME), and structural SVM (SSVM) on the Chinese clinical NER task. All classifiers were trained on the training dataset and evaluated on the test set, and micro-averaged precision, recall, and F-measure were reported.

resultsOur evaluation on the independent test set showed that most types of feature were beneficial to Chinese NER systems, although the improvements were limited. The system achieved the highest performance by combining word segmentation and section information, indicating that these two types of feature complement each other. When the same types of optimized feature were used, CRF and SSVM outperformed SVM and ME. More specifically, SSVM achieved the highest performance of the four algorithms, with F-measures of 93.51% and 90.01% for admission notes and discharge summaries, respectively.

Indexed as

AlgorithmsElectronic Health RecordsNatural Language ProcessingArtificial IntelligenceChinaHumansPatient AdmissionSupport Vector MachineChinese clinic notesMachine learning algorithmMedical concept recognitionNatural language processing

Identifiers

PMID24347408
PMCPMC4147609
OpenAlexW2190421341

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.