1. The initial phase in data processing or software development where raw data is cleaned, formatted, and prepared before analysis or execution
The preprocessing stage removes noise and inconsistencies from the dataset.
A etapa de pré-processamento remove ruído e inconsistências do conjunto de dados.
2. In machine learning, the phase where data is transformed and normalized to improve model training quality
During the preprocessing stage, features are scaled and missing values are handled.
Durante a etapa de pré-processamento, as características são dimensionadas e os valores ausentes são tratados.