基于可追溯公开房源构建房地产情报。
采集并监测已批准公开房源、价格、属性和市场信号，同时保留实体匹配、新鲜度和来源控制。
WORKFLOWS
围绕真实业务问题构建可验证的数据工作流。
从明确的数据源、Schema、新鲜度和验收标准开始，而不是从夸大的通用成功率开始。
Listing monitoring
Track selected public listings for price, status, and attribute changes over time.
Market research
Build bounded source-specific datasets for inventory, asking prices, and observed market trends.
Property matching
Normalize addresses and listing attributes while retaining source IDs and provenance for review.
METHOD
把范围、采集、结构化、验证和交付分成可检查步骤。
每一步都保留上下文与失败状态，便于复核和持续改进。
Scope
Choose approved portals, regions, property types, fields, and cadence.
Acquire
Collect public listing observations with source IDs and URLs attached.
Resolve
Normalize addresses and identifiers while preserving uncertain matches for review.
Validate
Check freshness, required fields, duplicate handling, and source state.
Analyze
Deliver accepted records to market, inventory, pricing, or monitoring workflows.
QUALITY
用证据衡量质量，而不是用一个通用百分比。
当有带日期和样本范围的基准证据时，再发布对应质量指标；否则明确保留不确定性。
Provenance
Keep source URL, source ID, and collection time for each listing observation.
Entity resolution
Separate deterministic matches from ambiguous records that require review.
Freshness
Treat removed, stale, or inaccessible listings as explicit states instead of silently carrying old values forward.
从一个可测量的试点开始。
明确数据源、Schema、频率和验收标准，再根据真实结果扩大范围。