Writing

Short write-ups on how I built things and what I learned.

• 1 Oct 2026 · 5 min read

  Matching 10 million business records: what worked in the Amazon ML Challenge

  How our team got from 0.927 to 0.964 F0.5 by fixing recall first, letting records pick entities, and judging every match against its rivals.

• 15 Oct 2026 · 4 min read

  The fee you never see: what 13 years of fund data say about Regular plans

  I downloaded daily NAVs for 21 Indian mutual funds since 2013 to measure what buying through an agent really costs, and found the answer depends on more than the fee.