28 lines
2.3 KiB
Python
28 lines
2.3 KiB
Python
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"""Separate Alpha selection properties from stock data fields; availability remains evidence based."""
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from ..backtests.contracts import SuperSimulationSettings
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from ..catalog.research_metadata import ResearchMetadata
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async def metadata(db):
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settings = await ResearchMetadata(db).get("settings")
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return {"settings_schema": SuperSimulationSettings.model_json_schema(), "settings_snapshot": settings,
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"selection_properties": [{"name": name, "description": description} for name, description in (
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("category", "用户设置的 Alpha 类别"), ("color", "用户设置的颜色"),
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("datasets", "组件使用的数据集集合，可配合 in()"), ("datafields", "组件使用的数据字段集合"),
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("datacategories", "组件使用的数据类别集合"), ("dataset_count", "不同数据集数量"),
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("datafield_count", "不同数据字段数量"), ("datacategory_count", "不同数据类别数量"),
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("decay", "组件的衰减设置"), ("favorite", "平台收藏状态"), ("name", "组件名称，按完整名称匹配"),
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("neutralization", "组件的中性化设置"), ("operator_count", "组件表达式算子数量"),
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("long_count", "IS 平均多头股票数量"), ("short_count", "IS 平均空头股票数量"),
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("tags", "组件的自定义标签集合"), ("truncation", "组件截断设置"),
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("turnover", "组件 IS 换手率"), ("universe", "组件股票池名称"),
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("self_correlation", "组件自相关属性"), ("prod_correlation", "组件生产相关性属性"),
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("os_start_date", "组件样本外起始日期，YYYY-MM-DD 字符串"),
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("classifications", "组件分类集合"), ("competitions", "组件关联比赛集合"))],
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"property_source": "BRAIN Selection Expression 文档快照（2025-10-16）；属性列表非账户实时授权清单，具体可用性以平台响应为准",
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"combo_input": "alpha 表示选中的组件；Combo 返回每日每个组件的权重，常量 1 可作为等权基线",
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"selection_object": "平台可供选择的已提交 ACTIVE Alpha；本地列表不等同于平台完整组件池",
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"operator_query": {"kind": "operators", "stage": "SELECTION"},
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"validation": "结构校验与平台执行分开；缺少适用范围的算子保持未知"}
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