Evidence map›Paper›PMID 22336388›Full record

ArticleBMC medical informatics and decision making2012

Predicting sample size required for classification performance.

Rosa L Figueroa, Qing Zeng-Treitler, Sasikiran Kandula, Long H Ngo

2 registry-linked trialsAbstract read
In one paragraph

Article in BMC medical informatics and decision making, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 176 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
176citing papers in PubMed, 3 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.

NCT05692830 recruitingnot on this mapstarted 2022, after this paper: background citation

Towards a Wearable Alcohol Biosensor: Examining the Accuracy of BAC Estimates From New-Generation Transdermal Technology Using Large-Scale Human Testing and Machine Learning Algorithms

TypeobservationalSponsorUniversity of Illinois at Urbana-ChampaignRan2022 to 2027Enrolled240ConditionsAlcohol Drinking, Alcohol IntoxicationArmsAlcohol
NCT06060925 completednot on this mapstarted 2023, after this paper: background citation

Multimodal Imaging Biomarkers for Investigating Fascia, Muscle and Vasculature in Myofascial Pain

TypeobservationalSponsorGeorge Mason UniversityRan2023 to 2025Enrolled96ConditionsMyofascial Pain Syndrome, HealthyArmsUltrasound imaging, Bioimpedance spectroscopy, Electromyography, Physical examination
3 · Its place in the literature

Who cites it

176 citing papers in PubMed, 3 syntheses or guidelines pooled it.

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116 more citing papers are in PubMed but not listed here.

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

4 authors.

Rosa L FigueroaDep. Ing. Eléctrica, Facultad de Ingeniería, Universidad de Concepción, Concepción, Chile.
Qing Zeng-Treitler
Sasikiran Kandula
Long H Ngo

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSupervised learning methods need annotated data in order to generate efficient models. Annotated data, however, is a relatively scarce resource and can be expensive to obtain. For both passive and active learning methods, there is a need to estimate the size of the annotated sample required to reach a performance target.

methodsWe designed and implemented a method that fits an inverse power law model to points of a given learning curve created using a small annotated training set. Fitting is carried out using nonlinear weighted least squares optimization. The fitted model is then used to predict the classifier's performance and confidence interval for larger sample sizes. For evaluation, the nonlinear weighted curve fitting method was applied to a set of learning curves generated using clinical text and waveform classification tasks with active and passive sampling methods, and predictions were validated using standard goodness of fit measures. As control we used an un-weighted fitting method.

resultsA total of 568 models were fitted and the model predictions were compared with the observed performances. Depending on the data set and sampling method, it took between 80 to 560 annotated samples to achieve mean average and root mean squared error below 0.01. Results also show that our weighted fitting method outperformed the baseline un-weighted method (p < 0.05).

conclusionsThis paper describes a simple and effective sample size prediction algorithm that conducts weighted fitting of learning curves. The algorithm outperformed an un-weighted algorithm described in previous literature. It can help researchers determine annotation sample size for supervised machine learning.

Indexed as

AlgorithmsLearning CurveSample SizeData Interpretation, StatisticalDiagnosis, Computer-AssistedHumansModels, StatisticalNonlinear DynamicsPattern Recognition, AutomatedPredictive Value of TestsProbability LearningProblem-Based LearningReproducibility of ResultsStochastic Processes

Identifiers

PMID22336388
PMCPMC3307431

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

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.