Hm 4,q#7

[samihaq]

I have two basic questions regarding Q#7

1. How to use 1-step learning for linear regression uses the term Ax + b = y,(b as a constant) as i think in the original form (w = pseudo_inv(X) * y ) it is used for Ax = y. We can take b on other side and subtract from y but then what values of b constant to use.

2. Secondly when we have h(x) = b as hypothesis set then as it is just a constant and there are no parameters, so we cant use any learning algorithm then does it mean that we just to try a range of values for b ?

Thank you very much

[yaser]

Originally Posted by samihaq

1. How to use 1-step learning for linear regression uses the term Ax + b = y,(b as a constant) as i think in the original form (w = pseudo_inv(X) * y ) it is used for Ax = y. We can take b on other side and subtract from y but then what values of b constant to use.

The constant can be treated as a coefficient of (which is the constant 1).

2. Secondly when we have h(x) = b as hypothesis set then as it is just a constant and there are no parameters, so we cant use any learning algorithm then does it mean that we just to try a range of values for b ?

It is a constant in the sense that the value of the hypothesis does not change for different values of , but the value of the constant itself can change from one hypothesis to another, so should be treated as a parameter.

[samihaq]

Thank you very much Professor.