Evidence map›Paper›PMID 27485666›Full record

ArticleJMIR medical informatics2016

A Semi-Supervised Learning Approach to Enhance Health Care Community-Based Question Answering: A Case Study in Alcoholism.

Papis Wongchaisuwat, Diego Klabjan, Siddhartha Reddy Jonnalagadda

Open access · goldAbstract read
In one paragraph

Article in JMIR medical informatics, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
0.7field-weighted citation impact, top 21% 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

9 citing papers in PubMed, 1 citations in OpenAlex.

  1. Review
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  3. Review
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  5. On the Role of Question Summarization and Information Source Restriction in Consumer Health Question Answering.AMIA Joint Summits on Translational Science proceedings. AMIA Joint Summits on Translational Science · 2019
    Article
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  7. Review
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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

3 authors at 1 institution in 1 country.

Papis WongchaisuwatDepartment of Industrial Engineering and Management Sciences, Northwestern University, Evanston, IL, United States. PapisWongchaisuwat2013@u.northwestern.edu.ORCID http://orcid.org/0000-0002-4438-7601
Siddhartha Reddy JonnalagaddaORCID http://orcid.org/0000-0003-3299-6052
Northwestern University · US

Funding

Improving the Efficiency and Efficacy in Authoring Essential Clinical FAQsR00LM011389 · NLM · NORTHWESTERN UNIVERSITY AT CHICAGO · PI JONNALAGADDA, SIDDHARTHA REDDY · 2013 to 2015
$665k
NLM NIH HHS R00 LM011389
6 · The paper itself

Abstract

backgroundCommunity-based question answering (CQA) sites play an important role in addressing health information needs. However, a significant number of posted questions remain unanswered. Automatically answering the posted questions can provide a useful source of information for Web-based health communities.

objectiveIn this study, we developed an algorithm to automatically answer health-related questions based on past questions and answers (QA). We also aimed to understand information embedded within Web-based health content that are good features in identifying valid answers.

methodsOur proposed algorithm uses information retrieval techniques to identify candidate answers from resolved QA. To rank these candidates, we implemented a semi-supervised leaning algorithm that extracts the best answer to a question. We assessed this approach on a curated corpus from Yahoo! Answers and compared against a rule-based string similarity baseline.

resultsOn our dataset, the semi-supervised learning algorithm has an accuracy of 86.2%. Unified medical language system-based (health related) features used in the model enhance the algorithm's performance by proximately 8%. A reasonably high rate of accuracy is obtained given that the data are considerably noisy. Important features distinguishing a valid answer from an invalid answer include text length, number of stop words contained in a test question, a distance between the test question and other questions in the corpus, and a number of overlapping health-related terms between questions.

conclusionsOverall, our automated QA system based on historical QA pairs is shown to be effective according to the dataset in this case study. It is developed for general use in the health care domain, which can also be applied to other CQA sites.

Indexed as

consumer health informaticsmachine learningnatural language processingquestion answeringWeb-based health communities

Identifiers

PMID27485666
PMCPMC4987493
OpenAlexW2474779893

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.