[
  {
    "expression": "rank(ts_sum(vec_avg(nws12_afterhsz_sl), 60)) * 0.7 + rank(-ts_delta(close, 2)) * 0.3",
    "time_consuming": 75.8,
    "formatted_time": "1分15.80秒",
    "alpha_id": "WjqvZQLO",
    "status": "success",
    "description": "/",
    "simulation_timestamp": "2025-11-13 22:04:01",
    "performance_metrics": {
      "sharpe_ratio": null,
      "annual_return": null,
      "annual_volatility": null,
      "max_drawdown": null,
      "information_ratio": null,
      "total_return": null
    },
    "risk_metrics": {
      "turnover": null,
      "score": null,
      "specific_return": null,
      "specific_risk": null,
      "tail_ratio": null,
      "common_ratio": null
    },
    "quantile_metrics": {
      "top_minus_bottom": null,
      "top_decile_return": null,
      "bottom_decile_return": null,
      "ic": null,
      "ic_decay": null
    },
    "other_metrics": {
      "capacity": null,
      "fitness": null,
      "instrument_count": null,
      "start_date": null,
      "end_date": null
    }
  }
]