Instance-based learning: Difference between revisions

Revision as of 12:14, 5 March 2019

Revision as of 16:10, 19 January 2020

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To battle the memory complexity of storing all training instances, as well as the risk of [[overfitting]] to noise in the training set, ''instance reduction'' algorithms have been proposed.<ref>{{cite journal |title=Reduction techniques for instance-based learning algorithms |author1=D. Randall Wilson |author2=Tony R. Martinez |journal=[[Machine Learning (journal)|Machine Learning]] |year=2000}}</ref>

Gagliardi<ref name=Gagliardi2011>{{cite journal|last=Gagliardi|first=F|title=Instance-based classifiers applied to medical databases: Diagnosis and knowledge extraction|journal=Artificial Intelligence in Medicine|year=2011|volume=52|issue=3|pages=123–139|doi=10.1016/j.artmed.2011.04.002|pmid=21621400}}</ref> applies this family of classifiers in medical field as second-opinion [[Clinical decision support system|diagnostic tools]] and as tools for the knowledge extraction phase in the process of [[knowledge discovery in databases]].

One of these classifiers (called ''Prototype exemplar learning classifier'' ([[PEL-C]]) is able to extract a mixture of abstracted prototypical cases (that are [[syndrome]]s) and selected atypical clinical cases.