variable transformation
[ˈvɛəriəbl trænsfərˈmeɪʃən]
nounpl: variable transformations
transformação de variável
1. A mathematical or statistical process that converts a variable from one form or scale to another, such as logarithmic, square root, or standardization transformations, often to improve data analysis or model performance
The researcher applied a logarithmic variable transformation to normalize the skewed distribution of income data.
O pesquisador aplicou uma transformação de variável logarítmica para normalizar a distribuição enviesada dos dados de renda.
2. In programming and data science, the conversion or modification of a variable's value, type, or format using computational methods
Variable transformation in the preprocessing step helped reduce dimensionality and improved model accuracy.
A transformação de variável na etapa de pré-processamento ajudou a reduzir a dimensionalidade e melhorou a precisão do modelo.
3. In statistics, a change applied to variables to satisfy assumptions of statistical tests or to improve the relationship between variables
Box-Cox variable transformation is commonly used to stabilize variance in regression analysis.
A transformação de variável Box-Cox é comumente usada para estabilizar a variância na análise de regressão.
This is primarily a technical term used in statistics, data science, and mathematics education. It is widely used in Brazilian and Portuguese academic contexts, particularly in universities with strong engineering, economics, and computer science programs. The term is essential in modern data science workflows and is commonly discussed in online courses and technical documentation in both Portuguese-speaking regions.
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