https://www.baeldung.com/java-inner-interfaces
interface Regression {
interface Data {
// ...
}
interface Result {
// ...
}
}
Le ven. 19 juil. 2019 à 01:20, Alex Herbert <alex.d.herb...@gmail.com> a écrit :
>
>
>
> > On 18 Jul 2019, at 23:49, Eric Barnhill <ericbarnh...@gmail.com> wrote:
> >
> > I suggested the following grammar to aim for in our meeting today with the
> > developing OLS module. If you see anything you'd prefer to change let's
> > establish it now , if anyone doesn't like it later, it's on me.
> >
> > RegressionData data = RegressionDataLoader.of(double[][] y, double[] x);
>
> Maybe:
>
> RegressionData data = Regressions.newRegressionData(double[][] y, double[] x);
> RegressionData data = Regressions.newData(double[][] y, double[] x);
>
> ?
>
> Note that the idea that either the x or y of the RegressionData may want to
> be changed was also raised. This could use a Builder pattern:
>
> RegressionData data = Regressions.newDataBuilder()
> .setY(double[][] y)
> .setX(double[] x)
> .build();
>
> Or some variant of. Something for the future.
>
>
> > Regression ols = new OLSRegression();
> > RegressionResults results = ols.regress(data);
> > betas = results.getBetas() ;
> >
> > where:
> > RegressionData is an interface
> > RegressionDataLoader is a factory class and of() a (possibly overloaded)
> > static method
> > Regression is an interface, implemented by OLSRegression
> > RegressionResults is an interface, the specific class returned is
> > OLSResults which implements it.
> > betas are the intercept and slopes of the regression model
> >
> > I think this preserves abstraction at the levels desired, since we will
> > want in future flexibility as to regression type, posslble state parameters
> > set on the regression object, and results contents and format. But also
> > doesn't take on any unnecessary abstractions.
> >
> > Eric
>
>
>
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