High-Performance Wavelet Matrix for Python, Implemented in Rust
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I built a Rust-powered Wavelet Matrix library for Python.There were surprisingly few practical Wavelet Matrix implementations available for Python, so I implemented one with a focus on performance, usability, and typed APIs. It supports fast rank/select, top-k, quantile, range queries, and even dynamic updates.Feedback welcome!
HN · launched Dec 17, 2025 · 93 upvotes (top 11%) · 1 view
Niche: specialized algorithms and computing libraries · 230 launches, 4 in the last 7 days ▼ -73% · Explore this niche →
Category and tags
- Horizontal
- Data infrastructure
- Developer
- Not AI
- Hobby / open-source project
Visit website ↗ Source listing ↗
More like this: all 230 launches in specialized algorithms and computing libraries →
Could you build this?
No Implementing an optimized succinct data structure in Rust with PyO3 bindings involves specialized algorithmic data structure expertise that AI generators typically hallucinate or corrupt.
What it would actually take: The system requires implementing a succinct Wavelet Matrix in Rust using bit-vectors with precomputed rank/select dictionaries (e.g., Poppy or broadword bitwise tricks) and exposed via PyO3. The hard part is achieving memory-efficient cache locality, zero-copy dynamic updates, and disk-backed serialization without compromising query latency. This requires advanced knowledge of succinct data structures, bitwise optimization, and low-level memory layout.
Discussion
10 comments analyzed.
Competitors mentioned: Wavelet trees (alternative implementation approach), Other wavelet libraries (scarce alternatives mentioned)
Concerns raised: Unclear use cases and real-world applications, Limited documentation on when/where wavelet matrices actually shine, Steep learning curve for understanding wavelet matrices vs. trees, Unsafe code concerns (memory safety)
Feature requests: Add concrete real-world examples to README, Document practical applications beyond image compression, Explain SIMD optimization possibilities
Competitors
Other products that read as similar to this one : 108 launches clear the similarity bar, closest 8 shown.
Attention rank: #11 of 109 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 44 days after the earliest competitor.
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