Places.frecency.*BucketCutoffFrom MozillaZine Knowledge Base
[edit] BackgroundFirefox 3 introduced a number of improvements to the Location Bar. Among them were changes to how sites are ordered in the dropdown menu. Firefox takes into account how frequently and how recently sites in the browser history were visited, combining them into a statistic called “frecency.†The frecency of sites is calculated when the browser is idle. The way frecency is computed can be tweaked by a number of preferences. Past visits are categorized into four “buckets,†based on the days since the visit. The visits in each bucket are given a different weight for frecency calculations. These preferences—of the form places.frecency.*BucketCutoff—determine the various cutoffs, in days, for the four possible buckets. [edit] Possible values and their effectsThe number of days since the visit required for a visit to fall into a given “bucket.†By default, the following preferences and values exist, defining four buckets:
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