Ask HN: How do you detect compliance risk in Google search results?

I’m experimenting with a rules-based approach to classify Google SERP snippets (neutral / adverse / authority-regulatory) for compliance and due diligence use cases.

One issue I keep running into is false positives from high-authority sources: a single regulator PDF or an old enforcement action can outweigh dozens of neutral results, even when the context has materially changed.

For those working in OSINT, risk, or search analysis: how do you usually validate false positives vs. true adverse signals at scale? Do you weight authority differently, or apply temporal or contextual decay?