datasubset
A datasubset is a subset of data drawn from a larger dataset, defined by criteria, sampling method, or both. It typically refers to a collection of records (rows) selected from the original dataset, possibly along with a subset of attributes (columns). In database terms, a datasubset can be produced by applying a query with a filter condition; in data science terms, it often means a sample used for analysis or model development.
Creation methods include random sampling, which selects records with equal probability; stratified sampling, which divides the
Uses of datasubsets include supporting exploratory data analysis, debugging pipelines, rapid prototyping, and machine learning workflows.
Considerations involve bias and representativeness, as subset selection can distort distributions or correlations if not done
Relation to related concepts: datasubsets are distinct from a feature subspace (subset of columns) and from