
A dataset with an uneven number of cases in each class is said to be unbalanced. Many models produce a subpar performance on unbalanced datasets. A dataset can be balanced by increasing the number of minority cases using SMOTE 2011 tools:::Rd_expr_doi("10.48550/arXiv.1106.1813"), BorderlineSMOTE 2005 tools:::Rd_expr_doi("10.1007/11538059_91") and ADASYN 2008. Or by decreasing the number of majority cases using NearMiss 2003 https://www.site.uottawa.ca/~nat/Workshop2003/jzhang.pdf or Tomek link removal 1976.
Maintainer: Emil Hvitfeldt emil.hvitfeldt@posit.co (ORCID)
Authors:
Emil Hvitfeldt emil.hvitfeldt@posit.co (ORCID)
Other contributors:
Posit Software, PBC (ROR) [copyright holder, funder]
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