Related Experiment Video
Updated: Jan 1, 2026
05:02
Comparing Bibliometric Analysis Using PubMed, Scopus, and Web of Science Databases
Published on: October 24, 2019
33.4K
Performance evaluation of three semantic expansions to query PubMed
Clément Massonnaud1,2, Romain Lelong1,2, Gaétan Kerdelhué1,2
1Department of Biomedical Informatics, Rouen University Hospital, Normandy, France.
Health Information and Libraries Journal
|December 15, 2019
Summary
Semantic query expansion improves PubMed searches. Evaluating three strategies, UMLS and CISMeF showed similar precision, but results varied by descriptor, suggesting tailored approaches for medical literature retrieval.
Area of Science:
- Medical Informatics
- Information Retrieval
- Biomedical Literature Search
Background:
- PubMed is a critical resource for accessing medical literature.
- Semantic query expansion, utilizing synonyms, can enhance search effectiveness.
Purpose of the Study:
- To evaluate the performance of three distinct semantic query expansion strategies.
- Assessing the impact of MeSH synonyms, UMLS mappings, and CISMeF mappings on PubMed search results.
Main Methods:
- Developed queries for 40 MeSH descriptors using three semantic expansion techniques.
- Sent queries to PubMed and evaluated the relevance of the top 20 retrieved citations by three independent judges.
Main Results:
- UMLS expansion yielded slightly higher mean precision (74.19%) than CISMeF (70.28%), though not statistically significant.
- Significant variation in retrieval performance was observed across different descriptors.
- Low inter-rater agreement (0.28) indicated subjectivity in relevance judgments.
Conclusions:
- The effectiveness and precision of semantic expansion strategies differ significantly based on the chosen descriptor, likely due to synonym quality.
- Combining UMLS and CISMeF expansions may offer optimal results.
- Information retrieval systems should offer adaptable semantic expansion options tailored to specific descriptors and user search goals.
Keywords:
MEDLINEPubMedbibliographic databasesinformation retrievalliterature searchingmedical subject headings (MeSH)precisionrecallsearch strategiesthesaurusMore Related Videos
09:20Cloud-Based Phrase Mining and Analysis of User-Defined Phrase-Category Association in Biomedical Publications
Published on: February 23, 2019
9.1K
05:47Evidence-based Knowledge Synthesis and Hypothesis Validation: Navigating Biomedical Knowledge Bases via Explainable AI and Agentic Systems
Published on: June 13, 2025
1.2K
Related Concept Videos
02:07Improving Translational Accuracy
3.5K
3.5K
01:15Nursing Evaluation
4.1K
The evaluation stage signals the end of the nursing process. The nurse gathers evaluative data to assess whether or not the patient has attained the expected results. Whereas the nurse collects data in the nursing assessment to identify the patient's health concerns, the evaluation stage data determines if the indicated health issues are resolved. Evaluative data collection includes two sections: the data acquired to evaluate patient outcomes and the time criteria for data collection.
4.1K
01:29Positron Emission Tomography
6.8K
Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body...
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body...
6.8K
02:46Chi-square Analysis
43.2K
The chi-square test is a statistical hypothesis test. It is used to check whether there is a significant difference between an expected value and an observed value. In the context of genetics, it enables us to either accept or reject a hypothesis, based on how much the observed values deviate from the expected values.
The chi-square test was developed by Pearson in 1990.
The first step of performing a Chi-square analysis is to establish a null hypothesis, which assumes that there is no real...
The chi-square test was developed by Pearson in 1990.
The first step of performing a Chi-square analysis is to establish a null hypothesis, which assumes that there is no real...
43.2K
01:16Bioequivalence: Overview
1.6K
Pharmaceutical equivalents, by definition, are drug products with the same active ingredient in the same quantities, encapsulated in identical dosage forms, and intended for the same administration routes. These pharmaceutical equivalents are deemed bioequivalent if the bioavailability of the active entity in the drug preparations is similar. Moreover, pharmaceutical equivalents demonstrating bioequivalence are also regarded as therapeutically equivalent. This means that when used as directed,...
1.6K
01:13Multiple Comparison Tests
4.4K
Multiple comparison test, abbreviated as MCT, is a post hoc analysis generally performed after comparing multiple samples with one or more tests. An MCT will help identify a significantly different sample among multiple samples or a factor among multiple factors.
It would be easy to compare two samples using a significance alpha level of 0.05. In other words, there is only one sample pair to be compared. However, it would be difficult to identify a significantly different sample if the number...
It would be easy to compare two samples using a significance alpha level of 0.05. In other words, there is only one sample pair to be compared. However, it would be difficult to identify a significantly different sample if the number...
4.4K