Insights
Insights
Technical write-ups drawn from real engineering work. Articles are published only once reviewed; the topics below are in preparation.
§ 01
In preparation
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Making data lineage verifiable: Merkle certificates for an ETL pipeline
Why a declared lineage is not enough, and how RFC 6962 hashing lets a third party check that a dashboard figure comes from a given source line.
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Better reconstruction is not better targeting: an autoencoder against FAMD
An honest evaluation of unsupervised anomaly detection on procurement data, with DeLong tests and criteria fixed before computation.
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When not to show a year-on-year change: comparability rules in a semantic model
Minimum volumes and ratio rules that stop a dashboard from announcing +200 % on three records.