orbit/template/ktr.py [1093:1117]:
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                )
                new_knots_tp_level = np.concatenate(
                    [self.knots_tp_level, knots_tp_level_out]
                )
                lev_knot_out = np.random.laplace(
                    0,
                    self.level_knot_scale,
                    size=(lev_knot_in.shape[0], len(knots_tp_level_out)),
                )
                lev_knot_out = np.cumsum(
                    np.concatenate(
                        [lev_knot_in[:, -1].reshape(-1, 1), lev_knot_out], axis=1
                    ),
                    axis=1,
                )[:, 1:]
                lev_knot = np.concatenate([lev_knot_in, lev_knot_out], axis=1)
            else:
                new_knots_tp_level = self.knots_tp_level
                lev_knot = lev_knot_in
            kernel_level = sandwich_kernel(new_tp, new_knots_tp_level)
        else:
            lev_knot = model.get(BaseSamplingParameters.LEVEL_KNOT.value)
            kernel_level = sandwich_kernel(new_tp, self.knots_tp_level)
        obs_scale = model.get(BaseSamplingParameters.OBS_SCALE.value)
        obs_scale = obs_scale.reshape(-1, 1)
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orbit/template/ktrlite.py [451:476]:
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                    )
                new_knots_tp_level = np.concatenate(
                    [self.knots_tp_level, knots_tp_level_out]
                )
                lev_knot_out = np.random.laplace(
                    0,
                    self.level_knot_scale,
                    size=(lev_knot_in.shape[0], len(knots_tp_level_out)),
                )
                lev_knot_out = np.cumsum(
                    np.concatenate(
                        [lev_knot_in[:, -1].reshape(-1, 1), lev_knot_out], axis=1
                    ),
                    axis=1,
                )[:, 1:]
                lev_knot = np.concatenate([lev_knot_in, lev_knot_out], axis=1)
            else:
                new_knots_tp_level = self.knots_tp_level
                lev_knot = lev_knot_in
            kernel_level = sandwich_kernel(new_tp, new_knots_tp_level)
        else:
            lev_knot = model.get(BaseSamplingParameters.LEVEL_KNOT.value)
            kernel_level = sandwich_kernel(new_tp, self.knots_tp_level)

        obs_scale = model.get(BaseSamplingParameters.OBS_SCALE.value)
        obs_scale = obs_scale.reshape(-1, 1)
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