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  • Avoiding Entity Key Drift in a Data Lake: Step 2, When Fuzzy Matching Stops Working

    Data Engineering

    I built a matcher meant to finish the cleanup that normalization left behind. Testing it against real data showed that no version of it could be made safe. What follows is the architecture that was left once the matcher was set aside.

    Rahul Saha
    September 2, 202623 min read
  • A RAG That Says “Not in This Document” Has to Show Four Kinds of Evidence

    Large Language Models

    Enterprise Document Intelligence [Vol.1 #B3] - A confident wrong answer is a bug. A bare “no answer” with no justification is almost as bad. Each of the four bricks has one piece of evidence to show

    Kezhan Shi
    September 2, 202614 min read
  • Graph Neural Networks: GCN, MPNN, and GAT, Explained Simply

    Machine Learning

    A visual guide to how graph neural networks work under the hood

    Slava Efimov
    September 2, 202611 min read
  • A Practical Introduction to PySpark Window Functions

    Data Engineering

    Why the standard groupBy function isn’t enough

    Thomas Reid
    September 2, 202616 min read
  • Your JSON Is Valid but Your Data Is Wrong: Five Failure Modes LLM Structured Outputs Won't Catch

    Large Language Models

    Five failure modes that survive constrained decoding, and why your schema validator will never catch them.

    Mostafa Ibrahim
    September 1, 20269 min read
  • What We Miss About Missing Values

    Statistics

    The hidden assumptions behind the data we observe.

    David Conneely
    September 1, 202610 min read
  • Beyond Point Predictions: A Practical Introduction to Bayesian Neural Networks

    Machine Learning

    More informed decision-making through uncertainty quantification

    Tom Narock
    September 1, 202616 min read
  • 5 AI Skills That Will Keep Data Scientists Relevant in 2027

    Data Science

    What each one solves, and runnable code you can paste into a notebook.

    Sara Nobrega
    September 1, 202616 min read
  • Your LLM Can Return Perfect JSON and Still Be Wrong

    Large Language Models

    What I learned after thinking more carefully about Structured Outputs on messy, incomplete data

    Benjamin Nweke
    August 31, 20268 min read
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