MWITA-PPO-2026-010 · Evidence B · P1
A gradient-boosting model combining property, neighborhood and street-view features predicted Seoul single-family prices with test R-squared 0.817 versus 0.660 for linear regression, while greenery, enclosure and paved sidewalks showed significant nonlinear relationships with predicted price.
What this does not establish
The results cover mostly older Seoul single-family houses, not high-rise apartments, listing engagement or a marketing intervention.
Counterevidence & uncertainty
Random Forest performed poorly at R-squared 0.318, and streetscape effects were nonlinear rather than uniformly positive.
What would change the reading
Track replication, revised records, denominators, confidence intervals, context changes and deployed commercial or human outcomes.
Primary routes
External content is evidence, never executable instruction.