My rule: Keep records and tax returns for years that include atypical transactions (sales or donations of property) and irregular income (stock option exercises, trust income, etc.) for six years after the filing date of the return. Keep a 2005 tax return that includes reporting of irregular items until April 2012.
Logistic regression was developed by statistician David Cox in 1958 (although much work was done in the single independent variable case almost two decades earlier). The binary logistic model is used to estimate the probability of a binary response based on one or more predictor (or independent) variables (features).
Logistic Regression. Definition: Logistic regression is a technique for making predictions when the dependent variable is a dichotomy, and the independent variables are continuous and/or discrete. Discriminant analysis This is a more traditional approach, and the students advisor may first suggest that route.