Unverified50% confidenceFactExact time
The tool's output includes a data field (structured data), an evidence field (the source text for each value), and an unverifiedFields array (flagging fields for which no source-text basis can be found).
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
10/17/2026
First Seen
Valid until: 1/15/2027
Sources
Related Entities
Related Claims
UnverifiedMerged cells are presentation-layer metadata, not the data itself. Treating them as an authoritative data source leads to data pipeline errors.70% similarUnverifiedOther common sources of data leakage include computing mean/standard deviation for normalization using the full dataset, using future time-point information in feature engineering, and failing to apply cross-validation isolation during target encoding.69% similarUnverifiedTool output should return only what the model needs for its next decision, use human-readable values rather than raw nested data, and list-type tools should return a summary and state any truncation.69% similarUnverifiedTabular data is riddled with missing values, heterogeneous data types, inconsistent encoding schemes, and domain-specific noise, which distinguishes it from structured, continuous data such as images and text.68% similarUnverified作者归纳出四类高频确定性工具调用错误：可选字段传null值、数组格式错误、空对象包裹、参数值缺失66% similar
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