WHAT IT ANSWERS
这张表适合回答什么
- 构建事件文本训练样本
- 按发布时间回放语料
- 评估事件检索策略
DATASET · research
research.event_backtest_corpus
保存用于历史事件回测的标准化文本陈述及发布时间,作为事件模型和检索评估的语料基础。
publish_tsWHAT IT ANSWERS
GRAIN & TIME
KEY FIELDS
statement_idpublish_tsRECOMMENDED JOINS
该表主要按自身业务键使用,目前没有推荐的跨表主键联接。
HOW TO QUERY SAFELY
先用 catalog 确认当前契约;可按 catalog 中列出的 filters 进一步缩小范围;单页最多 5000 行,该表不提供稳定 cursor,结果过大时必须缩小标的、日期或其他筛选。
MACHINE CONTRACT
publish_ts, statement_id, source—canonical_final_activesource→ source · stringspeaker→ speaker · stringstatement_id→ statement_id · stringPOINT IN TIME
该资产没有 PIT 契约。普通 rows 端点仍按当前公开读模式返回数据;不要把它表述成历史时点快照。
COPY-READY CALLS
同一数据集可用 HTTP、Python SDK、CLI 或 MCP;Key 始终只通过环境变量/Bearer Header 传递。
curl --fail-with-body -H "Authorization: Bearer $FRIENDS_DATA_API_KEY" "https://api.alphahubs.uk/api/v1/data/datasets/research/event_backtest_corpus/rows?limit=100&source=SOURCE_VALUE&start=2026-08-01&end=2026-08-01"from friends_data_api import FriendsDataClient, Settings
async with FriendsDataClient(Settings.from_env()) as client:
page = await client.get_dataset_rows('research', 'event_backtest_corpus', limit=100, start='2026-08-01', end='2026-08-01', filters={'source': 'SOURCE_VALUE'})
print(page.data)
if page.has_more:
print("next cursor:", page.next_cursor)friends-data get-dataset-rows research event_backtest_corpus --limit 100 --start 2026-08-01 --end 2026-08-01 --filter source=SOURCE_VALUE{
"arguments": {
"dataset": "event_backtest_corpus",
"end": "2026-08-01",
"filters": {
"source": "SOURCE_VALUE"
},
"limit": 100,
"namespace": "research",
"start": "2026-08-01"
},
"tool": "get_dataset_rows"
}FIELD DICTIONARY
descriptionSource 可在 JSON 中区分仓库注释、标准术语表和名称推导说明。
| # | 字段 | ClickHouse 类型 | JSON | 可空 | 角色 | 说明 |
|---|---|---|---|---|---|---|
| 1 | statement_id | String | string | no | filter, default_order, warehouse_primary_key | Identifier for statement.名称推导 |
| 2 | publish_tsUTC_datetime | DateTime64(3, 'UTC') | string / date-time | no | time, default_order, warehouse_primary_key, provenance | UTC point-in-time availability timestamp used by PIT reads.标准术语表 |
| 3 | speaker | String | string | no | filter | Source-normalized field: speaker.名称推导 |
| 4 | title | String | string | no | value | Human-readable title supplied or normalized from the source.标准术语表 |
| 5 | body | String | string | no | value | Source-normalized field: body.名称推导 |
| 6 | url | String | string | no | value | Canonical URL attached to the record.标准术语表 |
| 7 | source | LowCardinality(String) | string | no | filter, default_order, warehouse_primary_key, provenance | Normalized upstream source identifier.标准术语表 |
| 8 | provider | LowCardinality(String) | string | no | provenance | Upstream data provider identifier.标准术语表 |
| 9 | source_url | String | string | no | provenance | URL of the upstream evidence or record when distributable.标准术语表 |
| 10 | source_record_id | String | string | no | provenance | Provider-side identifier for the source record.标准术语表 |
| 11 | raw_payload_hash | String | string | no | provenance | Opaque fingerprint of the normalized source payload for provenance checks.标准术语表 |
| 12 | parser_version | LowCardinality(String) | string | no | provenance | Version of the parser or normalizer that produced the row.标准术语表 |
| 13 | quality_status | LowCardinality(String) | string | no | provenance | Machine-readable data-quality classification.标准术语表 |
| 14 | license_scope | LowCardinality(String) | string | no | provenance | License or redistribution scope attached to the row.标准术语表 |
| 15 | visibility_tier | LowCardinality(String) | string | no | provenance | Serving visibility tier attached to the row.标准术语表 |
| 16 | ingest_run_id | String | string | no | provenance | Identifier of the ingestion run that produced the row.标准术语表 |
| 17 | version | UInt64 | integer | no | provenance | Monotonic row version used for correction-aware reads.标准术语表 |
| 18 | is_deleted | UInt8 | integer | no | value | Soft-delete marker; public serving excludes current tombstones.标准术语表 |
| 19 | created_atUTC_datetime | DateTime64(3, 'UTC') | string / date-time | no | value | UTC timestamp when the warehouse row was first created.标准术语表 |
| 20 | updated_atUTC_datetime | DateTime64(3, 'UTC') | string / date-time | no | value | UTC timestamp when the warehouse row was last updated.标准术语表 |
换一个字段名、类型或角色。
结构来自 Friends 只读身份可见的真实 serving relation;权限、过滤、排序、PIT 与分页来自可执行 DatasetSpec。Schema observed at 2026-10-06T18:08:52Z。