A look at the challenges some AI developers face in building models to extract trillions of high-quality tokens from PDFs, which are hard to parse, for training (Josh Dzieza/The Verge)

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Josh Dzieza / The Verge:A look at the challenges some AI developers face in building models to extract trillions of high-quality tokens from PDFs, which are hard to parse, for training  —  Last November, the House Oversight Committee had just released 20,000 pages of documents from the estate of Jeffrey Epstein …