{"adoption": {"forks": 164, "observed_at": "2026-08-28T04:04:53.725124+00:00", "stars": 1496}, "canonical_url": "https://ross.abutalabs.com/products/finitestateentropy", "card": {"archived": false, "artifact_type": "library", "description": "New generation entropy codecs : Finite State Entropy and Huff0", "domain": ["performance", "developer-tools"], "enriched": true, "function": ["compression"], "health_score": 20, "homepage": null, "language": "C", "license": "BSD-2-Clause", "license_family": "permissive", "maturity": "stable", "member_repos": ["Cyan4973/FiniteStateEntropy"], "name": "Cyan4973/FiniteStateEntropy", "platform": ["cross-platform", "c"], "pushed_at": "2024-03-21T18:01:36+00:00", "repo": "Cyan4973/FiniteStateEntropy", "stars": 1496, "tags": ["entropy-coding", "huffman", "ans", "fse", "huff0", "codec", "algorithms"], "topics": ["huffman", "c", "fse", "compression", "entropy"], "urls": [], "use_cases": ["compress data with a fast entropy codec in C", "replace zlib's Huffman encoder with a faster alternative", "achieve compression ratios beyond the 1-bit-per-symbol Huffman limit", "integrate FSE or Huff0 into a custom compression format", "benchmark entropy coding speed and ratio"], "what_it_is": "A C library providing two high-speed entropy codecs: Huff0, a Huffman coder optimized for modern out-of-order CPUs, and FSE, an ANS-based entropy encoder achieving near-Shannon-limit compression accuracy. It is the entropy-coding core used in projects like Zstandard.", "when_to_avoid": ["you need a complete file or archive format rather than a raw codec", "you need cross-language bindings beyond C without writing your own", "you need dictionary or windowed compression features of a full compressor like zstd"], "when_to_choose": ["you need extremely fast compression or decompression in C", "you want near-arithmetic-coding accuracy at high speed via ANS", "you're building a custom compression pipeline needing an entropy stage"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/finitestateentropy", "repo": "Cyan4973/FiniteStateEntropy", "role": "main", "score": 32}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:04:53.725124+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-30T04:33:11.102774+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2b7249867b7770d48117664dd9e61096ef20890dab9c57b2f33f3c52c314a44b", "fetched_at": "2026-08-28T04:04:53.725124+00:00", "kind": "readme", "missing": false, "url": "https://github.com/Cyan4973/FiniteStateEntropy"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:04:53.725124+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-30T04:33:11.102774+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2b7249867b7770d48117664dd9e61096ef20890dab9c57b2f33f3c52c314a44b", "fetched_at": "2026-08-28T04:04:53.725124+00:00", "kind": "readme", "missing": false, "url": "https://github.com/Cyan4973/FiniteStateEntropy"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-30T04:33:11.102774+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2b7249867b7770d48117664dd9e61096ef20890dab9c57b2f33f3c52c314a44b", "fetched_at": "2026-08-28T04:04:53.725124+00:00", "kind": "readme", "missing": false, "url": "https://github.com/Cyan4973/FiniteStateEntropy"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:04:53.725124+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:04:53.725124+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:04:53.725124+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-30T04:33:11.102774+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2b7249867b7770d48117664dd9e61096ef20890dab9c57b2f33f3c52c314a44b", "fetched_at": "2026-08-28T04:04:53.725124+00:00", "kind": "readme", "missing": false, "url": "https://github.com/Cyan4973/FiniteStateEntropy"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:04:53.725124+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:04:53.725124+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-30T04:33:11.102774+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2b7249867b7770d48117664dd9e61096ef20890dab9c57b2f33f3c52c314a44b", "fetched_at": "2026-08-28T04:04:53.725124+00:00", "kind": "readme", "missing": false, "url": "https://github.com/Cyan4973/FiniteStateEntropy"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:04:53.725124+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:04:53.725124+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:04:53.725124+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-30T04:33:11.102774+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2b7249867b7770d48117664dd9e61096ef20890dab9c57b2f33f3c52c314a44b", "fetched_at": "2026-08-28T04:04:53.725124+00:00", "kind": "readme", "missing": false, "url": "https://github.com/Cyan4973/FiniteStateEntropy"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:04:53.725124+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:04:53.725124+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-30T04:33:11.102774+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2b7249867b7770d48117664dd9e61096ef20890dab9c57b2f33f3c52c314a44b", "fetched_at": "2026-08-28T04:04:53.725124+00:00", "kind": "readme", "missing": false, "url": "https://github.com/Cyan4973/FiniteStateEntropy"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-30T04:33:11.102774+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2b7249867b7770d48117664dd9e61096ef20890dab9c57b2f33f3c52c314a44b", "fetched_at": "2026-08-28T04:04:53.725124+00:00", "kind": "readme", "missing": false, "url": "https://github.com/Cyan4973/FiniteStateEntropy"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-30T04:33:11.102774+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2b7249867b7770d48117664dd9e61096ef20890dab9c57b2f33f3c52c314a44b", "fetched_at": "2026-08-28T04:04:53.725124+00:00", "kind": "readme", "missing": false, "url": "https://github.com/Cyan4973/FiniteStateEntropy"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-30T04:33:11.102774+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2b7249867b7770d48117664dd9e61096ef20890dab9c57b2f33f3c52c314a44b", "fetched_at": "2026-08-28T04:04:53.725124+00:00", "kind": "readme", "missing": false, "url": "https://github.com/Cyan4973/FiniteStateEntropy"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 0, "longevity": 100, "rhythm": 35}, "computed_at": "2026-09-03T02:20:16.233290+00:00", "flags": ["no_releases"], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 4644, "days_push": 895, "days_rel": null, "gap_med": null, "n_releases_24m": 0}, "score": 32, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}