{"adoption": {"forks": 722, "observed_at": "2026-08-28T04:10:00.353397+00:00", "stars": 7503}, "canonical_url": "https://ross.abutalabs.com/products/paip-lisp", "card": {"archived": false, "artifact_type": "learning-resource", "description": "Lisp code for the textbook \"Paradigms of Artificial Intelligence Programming\"", "domain": ["artificial-intelligence", "programming-languages", "tutorials", "education"], "enriched": true, "function": ["interpreter", "parser", "nlp", "search-engine", "compiler"], "health_score": 20, "homepage": null, "language": "Common Lisp", "license": "MIT", "license_family": "permissive", "maturity": "maintenance", "member_repos": ["norvig/paip-lisp"], "name": "norvig/paip-lisp", "platform": ["cross-platform", "cli"], "pushed_at": "2024-10-15T03:26:54+00:00", "repo": "norvig/paip-lisp", "stars": 7503, "tags": ["common-lisp", "textbook", "classic-ai", "ebook", "peter-norvig", "symbolic-computation", "logic-programming", "natural-language-processing"], "topics": [], "urls": [], "use_cases": ["learn classic AI programming techniques in Common Lisp", "study search algorithms, logic programming, and unification grammars", "read a free ebook version of Norvig's PAIP textbook", "explore implementations of Eliza, GPS, and expert systems", "learn Lisp through worked AI case studies", "find source code examples from the PAIP book"], "what_it_is": "Open-source repository for Peter Norvig's classic textbook 'Paradigms of Artificial Intelligence Programming: Case Studies in Common Lisp', including the full text in markdown/epub/pdf formats and all accompanying Common Lisp source code. It covers classic AI programming paradigms such as search, logic programming, expert systems, and natural language processing.", "when_to_avoid": ["you need modern deep learning or machine learning methods", "you want a maintained software library rather than a book and code samples", "you're not comfortable reading 1990s-era Lisp code"], "when_to_choose": ["you want to learn Common Lisp through substantive AI programming examples", "you're studying the history and foundations of symbolic AI", "you want a free, legal copy of the PAIP textbook and its code", "you're interested in classic techniques like Prolog interpreters, expert systems, and NLP grammars"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/paip-lisp", "repo": "norvig/paip-lisp", "role": "main", "score": 23}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:10:00.353397+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-29T17:37:31.620054+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "14663e9509775323c238b0cd1ff891312d32d1e854935e0e3f3008f2553ea30f", "fetched_at": "2026-08-28T04:10:00.353397+00:00", "kind": "readme", "missing": false, "url": "https://github.com/norvig/paip-lisp"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:10:00.353397+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-29T17:37:31.620054+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "14663e9509775323c238b0cd1ff891312d32d1e854935e0e3f3008f2553ea30f", "fetched_at": "2026-08-28T04:10:00.353397+00:00", "kind": "readme", "missing": false, "url": "https://github.com/norvig/paip-lisp"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-29T17:37:31.620054+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "14663e9509775323c238b0cd1ff891312d32d1e854935e0e3f3008f2553ea30f", "fetched_at": "2026-08-28T04:10:00.353397+00:00", "kind": "readme", "missing": false, "url": "https://github.com/norvig/paip-lisp"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:10:00.353397+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:10:00.353397+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:10:00.353397+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-29T17:37:31.620054+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "14663e9509775323c238b0cd1ff891312d32d1e854935e0e3f3008f2553ea30f", "fetched_at": "2026-08-28T04:10:00.353397+00:00", "kind": "readme", "missing": false, "url": "https://github.com/norvig/paip-lisp"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:10:00.353397+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:10:00.353397+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-29T17:37:31.620054+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "14663e9509775323c238b0cd1ff891312d32d1e854935e0e3f3008f2553ea30f", "fetched_at": "2026-08-28T04:10:00.353397+00:00", "kind": "readme", "missing": false, "url": "https://github.com/norvig/paip-lisp"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:10:00.353397+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:10:00.353397+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:10:00.353397+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-29T17:37:31.620054+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "14663e9509775323c238b0cd1ff891312d32d1e854935e0e3f3008f2553ea30f", "fetched_at": "2026-08-28T04:10:00.353397+00:00", "kind": "readme", "missing": false, "url": "https://github.com/norvig/paip-lisp"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:10:00.353397+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:10:00.353397+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-29T17:37:31.620054+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "14663e9509775323c238b0cd1ff891312d32d1e854935e0e3f3008f2553ea30f", "fetched_at": "2026-08-28T04:10:00.353397+00:00", "kind": "readme", "missing": false, "url": "https://github.com/norvig/paip-lisp"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-29T17:37:31.620054+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "14663e9509775323c238b0cd1ff891312d32d1e854935e0e3f3008f2553ea30f", "fetched_at": "2026-08-28T04:10:00.353397+00:00", "kind": "readme", "missing": false, "url": "https://github.com/norvig/paip-lisp"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-29T17:37:31.620054+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "14663e9509775323c238b0cd1ff891312d32d1e854935e0e3f3008f2553ea30f", "fetched_at": "2026-08-28T04:10:00.353397+00:00", "kind": "readme", "missing": false, "url": "https://github.com/norvig/paip-lisp"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-29T17:37:31.620054+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "14663e9509775323c238b0cd1ff891312d32d1e854935e0e3f3008f2553ea30f", "fetched_at": "2026-08-28T04:10:00.353397+00:00", "kind": "readme", "missing": false, "url": "https://github.com/norvig/paip-lisp"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 0, "longevity": 100, "rhythm": 8}, "computed_at": "2026-09-03T02:20:16.233290+00:00", "flags": [], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 3131, "days_push": 687, "days_rel": null, "gap_med": null, "n_releases_24m": 0}, "score": 23, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}