Questions tagged [linearly-separable]

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Why does the error function become constant while implementing stochastic gradient descent using 2D inputs?

According to Q8,9 of HW5, Caltech's Learning from data course, we have to generate 100 test points of the form (x1,x2) and get their outputs 1/0 depending on which side of a random line they lie on. ...
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questions about logistic regression

In the following Linear Regression discussion I didn't understand a few things: So my questions are: In the third slide: What does this probability means $P\left(y_i|x_i\right)$ and accordingly what ...
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PCA vs.KernelPCA: which one to use for high dimensional data?

I have a dataset which contains a lot of features (>>3). For computational reasons, I would like to apply a dimensionality reduction. At this point I could use different techniques: standard PCA ...
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Is a data set considered to be linearly separable if it can only be separated by multiple hyperplanes?

For example, on the linear separability Wikipedia article, the following example is given: They say "The following example would need two straight lines and thus is not linearly separable". On the ...