{
    "measure" : "progress",
    "thresholds" : [0.1, 0.3, 0.5],
    "min_lesson_length": 100,
    "signal_smoothing" : true, 
    "parameters" : 
    {
        "big_wall_min_height" : [0.0, 4.0, 6.0, 8.0],
        "big_wall_max_height" : [4.0, 7.0, 8.0, 8.0]
    }
}