1. Data in which most elements are zero, null, or missing, with only a few non-zero or meaningful values distributed throughout the dataset
The recommendation system handles sparse data efficiently by only storing non-zero values.
O sistema de recomendação processa dados esparsos de forma eficiente armazenando apenas valores diferentes de zero.
2. A dataset characterized by high dimensionality with relatively few observations or low density of information
In text mining, term-document matrices are typically sparse data structures.
Em mineração de texto, as matrizes termo-documento são tipicamente estruturas de dados esparsos.