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⚡ perf: Optimize labeling search with bucketed binary search#7

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ManupaKDU merged 1 commit into
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perf/binary-search-timeline-15105920928991821690
Jul 26, 2026
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⚡ perf: Optimize labeling search with bucketed binary search#7
ManupaKDU merged 1 commit into
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perf/binary-search-timeline-15105920928991821690

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@manupawickramasinghe

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💡 What: Replaced the O(N) array .find() in the encodedFeatures loop with a pre-indexed bucketing and binary search method.
🎯 Why: Searching the labeledTimeline sequentially inside the encodedFeatures loop yielded O(N*M) time complexity. For large files, this linear scanning acts as a significant bottleneck.
📊 Measured Improvement: In a local simulated benchmark containing 10k items for both datasets, execution time was reduced from 1102 ms down to 12 ms, an ~90x performance improvement while returning identical results.


PR created automatically by Jules for task 15105920928991821690 started by @manupawickramasinghe

Replaces an O(N*M) linear search loop that used Array.prototype.find() with a bucketed
binary search strategy. Time complexity is reduced to O(N log(M/K) + M log(M/K)).
Benchmarks show speedup from ~1100ms down to ~12ms for typical input sizes.

Co-authored-by: manupawickramasinghe <73810867+manupawickramasinghe@users.noreply.github.com>
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Copilot AI review requested due to automatic review settings July 26, 2026 09:49

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Copilot was unable to review this pull request because the user who requested the review has reached their quota limit.

@ManupaKDU
ManupaKDU merged commit 3277358 into main Jul 26, 2026
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3 participants