This is a follow-up to yesterday's post about the v0.5.0 C-train failures. Yesterday we ran four attempts and ruled out three suspects. Today we ran a fifth and ruled out a fourth. One hypothesis remains. The method we used comes directly from software debugging, so this post is written for engineers who haven't run a training campaign before.
Mailwoman is an open-source address parser + geocoder that uses Who's On First as its gazetteer. This post is a practical reference on WOF's gotchas and the tooling we built to work around them. Try the demo or see what ships today.
Mailwoman is an open-source address parser that runs in Node and the browser. It uses a small neural model to label address components ("350" = house number, "NY" = region, etc.). Try the live demo.
Mailwoman is an open-source address parser. This post is a training log entry from May 2026 documenting the v0.5.0 divergence investigation. For current project status, see what ships today.
Mailwoman is an open-source address parser. This post is a historical retrospective on the v0.4.0 training campaign (May 2026). For current project status, see what ships today.