Results are returned according to their frecency (a combination of frequency and recency of visits to that page) ensuring that you're seeing the most relevant matches.— Softpedia - Windows - All
Places history, which switches the storage backend from mork to SQLite, makes us able to store a much larger amount of visited pages, and gives us the frecency-driven algorithm for autocomplete when typing in the location bar, searching in both URL and title (yes, that's what's attributed as "awesomebar" elsewhere).
The quick-access strip is determined by frecency - the same metric that the— LXer Linux News
Instead of raw frecency over all sites visited, we are only considering those sites that start history "strands".— LXer Linux News
The default email provider will be based on your browsing history - the email account with the highest frecency (see the detect-email-provider command).— Planet Mozilla

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