cv_grid.py 文件源码

def display_grid_scores(grid_scores, top=None):
    """Helper function to format a report on a grid of scores"""

    grid_scores = sorted(grid_scores, key=lambda x: x[1], reverse=True)
    if top is not None:
        grid_scores = grid_scores[:top]

    # Compute a threshold for staring models with overlapping
    # stderr:
    _, best_mean, best_scores = grid_scores[0]
    threshold = best_mean - 2 * sem(best_scores)

    for params, mean_score, scores in grid_scores:
        append_star = mean_score + 2 * sem(scores) > threshold
        print(display_scores(params, scores, append_star=append_star))