def linear_regression(features, values):
  model = sg()
  model = model.fit(features, values)
  intercept = model.intercept_
  params = model.coef_
  return intercept, params
def linear_regression(features, values):
  model = sg(eta0=0.001, n_iter=50)
  model = model.fit(features, values)
  intercept = model.intercept_
  params = model.coef_
  return intercept, params