Colin VanLang

Colin is a product engineer at Sierra. Previously, he led engineering teams at Watershed, Lattice, and Dropbox. He studied Structural Engineering at Stanford University.

Publicaciones de Colin VanLang

Text "Improving search" on a blurred green and pink background

Golden articles: Evaluating and improving search

Search evaluation shouldn’t be static — it should reflect what actually helps resolve real customer issues. By measuring performance daily against production conversations and feeding those signals back into the system, we've built a continuously improving system for resolving customers’ needs.

14 de abril de 2026

Meet Linnaeus and Darwin: Search models that drive higher resolution rates

Our purpose-built retrieval and reranking models outperform off-the-shelf ones, driving up to 16 percentage point improvements in resolution rates.

3 de abril de 2026

Colin VanLang

Publicaciones de Colin VanLang

Golden articles: Evaluating and improving search

Meet Linnaeus and Darwin: Search models that drive higher resolution rates

Descubra lo que Sierra puede hacer por usted

Publicaciones de Colin VanLang

Golden articles: Evaluating and improving search

Meet Linnaeus and Darwin: Search models that drive higher resolution rates