[
  {
    "expression": "ts_mean(close, 20) / ts_mean(close, 100) > 1.05 and ts_std(close / ts_mean(close, 10), 20) / ts_mean(close, 20) < 0.15",
    "time_consuming": 5.94,
    "formatted_time": "5.94秒",
    "alpha_id": "/",
    "status": "error",
    "description": "Unexpected character 'a' near \"0) > 1.05 and ts_std\"",
    "simulation_timestamp": "2025-11-14 17:35:28",
    "metrics": null
  },
  {
    "expression": "ts_min(low, 20) / ts_max(high, 60) > 0.8 and market_cap > ts_mean(market_cap, all)",
    "time_consuming": 6.53,
    "formatted_time": "6.53秒",
    "alpha_id": "/",
    "status": "error",
    "description": "Unexpected character 'a' near \"60) > 0.8 and market\"",
    "simulation_timestamp": "2025-11-14 17:35:29",
    "metrics": null
  },
  {
    "expression": "close > ts_mean(close, 50) and ts_delta(ts_rank(volume, 10), 5) > 0",
    "time_consuming": 7.6,
    "formatted_time": "7.60秒",
    "alpha_id": "/",
    "status": "error",
    "description": "Unexpected character 'a' near \"lose, 50) and ts_del\"",
    "simulation_timestamp": "2025-11-14 17:35:30",
    "metrics": null
  },
  {
    "expression": "ts_corr(close, vwap, 30) < 0.3 and ts_mean(volume, 5) / ts_mean(volume, 60) < 0.8",
    "time_consuming": 5.8,
    "formatted_time": "5.80秒",
    "alpha_id": "/",
    "status": "error",
    "description": "Unexpected character 'a' near \"30) < 0.3 and ts_mea\"",
    "simulation_timestamp": "2025-11-14 17:35:40",
    "metrics": null
  },
  {
    "expression": "abs(close - vwap) / vwap < 0.02 and volume < ts_mean(volume, 20)",
    "time_consuming": 6.62,
    "formatted_time": "6.62秒",
    "alpha_id": "/",
    "status": "error",
    "description": "Unexpected character 'a' near \"ap < 0.02 and volume\"",
    "simulation_timestamp": "2025-11-14 17:35:41",
    "metrics": null
  },
  {
    "expression": "(close - ts_mean(close, 30)) / ts_std(close, 30) > 1.5 and ts_delta(close, 5) < 0",
    "time_consuming": 15.51,
    "formatted_time": "15.51秒",
    "alpha_id": "/",
    "status": "error",
    "description": "Unexpected character 'a' near \"30) > 1.5 and ts_del\"",
    "simulation_timestamp": "2025-11-14 17:35:50",
    "metrics": null
  },
  {
    "expression": "ts_std(log(close / close[1]), 20) > ts_mean(ts_std(log(close / close[1]), 20), 60)",
    "time_consuming": 1.2,
    "formatted_time": "1.20秒",
    "alpha_id": "/",
    "status": "error",
    "description": "Unexpected character '[' near \"se / close[1]), 20)\"",
    "simulation_timestamp": "2025-11-14 17:35:56",
    "metrics": null
  },
  {
    "expression": "ts_range(high - low, 5) / ts_mean(high - low, 60) > 1.5 and ts_delta(ts_std(close, 10), 5) > 0",
    "time_consuming": 7.38,
    "formatted_time": "7.38秒",
    "alpha_id": "/",
    "status": "error",
    "description": "Unexpected character 'a' near \"60) > 1.5 and ts_del\"",
    "simulation_timestamp": "2025-11-14 17:36:02",
    "metrics": null
  }
]