Site Focus Score
Macro-semantics (site level)Site Focus Score is a Google internal metric that quantifies how topically coherent a website is. It's calculated as the average distance of page embeddings from the site's centroid. Higher focus means Google better understands what the site is about.
For example, Senuto has a Site Focus of 0.86 (very high). In the case of an outdoor furniture store, removing content about grass and flowers shifted the centroid toward 'outdoor furniture' and rankings improved—less off-topic content = better focus. You can also calculate it per cluster, not just per domain.
The higher the Focus, the better Google understands what the site is about. Site Focus Score pairs with Site Radius: the ideal combination is high Focus + low Radius, which means topical specialization.