{
  "topic_id": "D07-F01-A05",
  "convention": {
    "span": 3,
    "alpha": 0.5,
    "seed_policy": "simple_average_each_layer",
    "first_dema_observation": 5
  },
  "values": [10, 13, 12, 15, 14, 18, 17, 20],
  "ema1": [null, null, 11.666666666666666, 13.333333333333332, 13.666666666666666, 15.833333333333332, 16.416666666666664, 18.208333333333332],
  "ema2": [null, null, null, null, 12.888888888888888, 14.36111111111111, 15.38888888888889, 16.79861111111111],
  "dema": [null, null, null, null, 14.444444444444445, 17.305555555555554, 17.44444444444444, 19.618055555555554],
  "span_one": {
    "values": [4, 9, -2],
    "expected": [4, 9, -2]
  },
  "constant": {
    "span": 3,
    "values": [7, 7, 7, 7, 7, 7],
    "expected": [null, null, null, null, 7, 7]
  },
  "step_response": {
    "span": 3,
    "values": [0, 0, 0, 0, 0, 10, 10, 10, 10],
    "expected": [null, null, null, null, 0, 7.5, 10, 10.625, 10.625]
  },
  "steady_state_weights": {
    "span": 3,
    "first_lags": [0.75, 0.25, 0.0625, 0, -0.015625, -0.015625],
    "first_negative_lag": 4,
    "interpretation": "Settled infinite-history coefficients, not SMA-seeded warm-up weights."
  }
}