Copy constructor and assignment operator do exactly what we need, so we use them.

Bool() allows generating tests with parameters in a set of (false, true). Synopsis: Bool() - returns a generator producing sequences with elements {f

Creates a Flags struct where the gtest_break_on_failure flag has the given value.

Compares two C strings. Returns true iff they have the same content. Unlike strcmp(), this function can handle NULL argument(s). A NULL C string is

Compares two C strings. Returns true iff they have the same content. Unlike strcmp(), this function can handle NULL argument(s). A NULL C string is

Calculate gradient and update current model

Calculate gradient and update current model. Using the SSE to accelerate vector operation.

Given data sample and current model, calculate gradient. Note that this method doesn't update local model, and the gradient will be pushed to the para

y = wTx (incluing bias term)

y = sum( (V_i_fj*V_j_fi)(x_i * x_j) ) Using SSE to accelerate vector operation.

Starts capturing stdout.

The ctor redirects the stream to a temporary file.

The ctor redirects the stream to a temporary file.