Why directory jumpers should use exponential moving sums instead of frecency

By jghub · 2026-06-25 · 3 points · 0 comments

Directory jumpers such as z.sh and zoxide need to rank candidate directories from a stream of past navigation events. Most implementations use some form of frecency : a score combining historical visit count with recency. The details vary, but the basic idea is always score = fr…

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