Contents
Which of the following methods can achieve zero training error?
1. Which of the following methods can achieve zero training error on any linearly separable dataset? Decision tree – Standard decision trees are having no learning biased. The training set error is always zero in decision trees if there is no label noise.
Which of the following is an example of deterministic algorithm?
2) Which of the following is an example of a deterministic algorithm? A deterministic algorithm is that in which output does not change on different runs. PCA would give the same result if we run again, but not k-means.
Which is easier to train, logistic regression or training?
Training is the process of finding patterns in the input data, so that the model can map a particular input (say, an image) to some kind of output, like a label. Logistic regression is easier to train and implement as compared to other methods.
Are there any issues with categorical logistic regression?
Particular issues with modelling a categorical response variable include nonnormal error terms, nonconstant error variance, and constraints on the response function (i.e., the response is bounded between 0 and 1). We will investigate ways of dealing with these in the binary logistic regression setting here.
How is the likelihood ratio used in logistic regression?
The likelihood ratio test is used to test the null hypothesis that any subset of the ‘s is equal to 0. The number of ‘s in the full model is k+1, while the number of ‘s in the reduced model is r+1. (Remember the reduced model is the model that results when the ‘s in the null hypothesis are set to 0.)
Why is the numerator of a logistic regression always positive?
With the logistic model, estimates of from equations like the one above will always be between 0 and 1. The reasons are: The numerator must be positive, because it is a power of a positive value ( e ).