Evidence map›Paper›PMID 23954592›Full record

ArticleJournal of biomedical informatics2013

Unsupervised biomedical named entity recognition: experiments with clinical and biological texts.

Shaodian Zhang, Noémie Elhadad

Abstract read
In one paragraph

Article in Journal of biomedical informatics, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

31 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
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  4. Article
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  7. Article
  8. Article
  9. Sequence Labeling for Disambiguating Medical Abbreviations.Journal of healthcare informatics research · 2023
    Article
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  15. Clinical Concept Extraction with Lexical Semantics to Support Automatic Annotation.International journal of environmental research and public health · 2021
    Article
  16. Review
  17. Article
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  20. Semantic annotation in biomedicine: the current landscape.Journal of biomedical semantics · 2017
    Review
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

2 authors.

Shaodian ZhangDepartment of Biomedical Informatics, Columbia University, 622 W. 168th Street, VC-5, New York, NY 10032, USA. Electronic address: shaodian@dbmi.columbia.edu.
Noémie Elhadad

Funding

Annotation, development and evaluation for clinical information extraction (transfer)R01GM090187 · NIGMS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI CHAPMAN, WENDY W., ELHADAD, NOEMIE · 2010 to 2013
$2.6M
NIGMS NIH HHS R01 GM090187NIGMS NIH HHS R01GM090187
6 · The paper itself

Abstract

Named entity recognition is a crucial component of biomedical natural language processing, enabling information extraction and ultimately reasoning over and knowledge discovery from text. Much progress has been made in the design of rule-based and supervised tools, but they are often genre and task dependent. As such, adapting them to different genres of text or identifying new types of entities requires major effort in re-annotation or rule development. In this paper, we propose an unsupervised approach to extracting named entities from biomedical text. We describe a stepwise solution to tackle the challenges of entity boundary detection and entity type classification without relying on any handcrafted rules, heuristics, or annotated data. A noun phrase chunker followed by a filter based on inverse document frequency extracts candidate entities from free text. Classification of candidate entities into categories of interest is carried out by leveraging principles from distributional semantics. Experiments show that our system, especially the entity classification step, yields competitive results on two popular biomedical datasets of clinical notes and biological literature, and outperforms a baseline dictionary match approach. Detailed error analysis provides a road map for future work.

Indexed as

Biomedical ResearchNatural Language ProcessingVocabulary, ControlledChunkingDistributional semanticsNamed entity recognitionNatural language processingUMLS

Identifiers

PMID23954592
PMCPMC3865922

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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.