Episode 18: Data Quality Failures

3 parts

197,945 singleton entities, garbage clusters that connect noise to noise, and the phantom city created by 190 pages of absorbed headers. Each part builds on the last — investigative analysis drawn from court filings, financial records, and released documents. Browse all episodes or the full investigation archive.

  1. Part 1 The Singleton Crisis: 197,945 Entities That Appear Once Data Quality

    Nearly one in four entities in the corpus (197,945 out of 821,633) appears in only one document. An entity that appears in only one document — called a...

  2. Part 2 Garbage Cluster Dissolution: When Entity Resolution Connects Noise to Noise Data Quality

    A cleanup script (Script 19b) dissolved 8 entity groups containing 3,576 records that had been incorrectly merged because unreadable text that the scann...

  3. Part 3 Header Absorption: How 190 Pages Created a Phantom City Data Quality

    A 190-page Ghislaine Maxwell UBS account statement (EFTA01275697.pdf) generated 190 false "Krakow" entity mentions when automated text scanning mangled...