{"adoption": {"forks": 363, "observed_at": "2026-08-28T04:08:46.788085+00:00", "stars": 4371}, "canonical_url": "https://ross.abutalabs.com/products/neurojs", "card": {"archived": false, "artifact_type": "library", "description": "A JavaScript deep learning and reinforcement learning library.", "domain": ["deep-learning", "machine-learning", "reinforcement-learning", "browser-extensions"], "enriched": true, "function": ["machine-learning", "deep-learning", "reinforcement-learning"], "health_score": 20, "homepage": "http://janhuenermann.com/projects/learning-to-drive", "language": "JavaScript", "license": "MIT", "license_family": "permissive", "maturity": "abandoned", "member_repos": ["janhuenermann/neurojs"], "name": "janhuenermann/neurojs", "platform": ["browser"], "pushed_at": "2023-10-10T12:55:04+00:00", "repo": "janhuenermann/neurojs", "stars": 4371, "tags": ["neural-networks", "deep-q-networks", "actor-critic", "self-driving-car", "browser-based-ml", "unmaintained", "javascript", "nodejs"], "topics": ["deep-learning", "self-driving-car", "reinforcement-learning", "javascript", "neural-network", "machine-learning"], "urls": [], "use_cases": ["train neural networks in the browser with javascript", "run reinforcement learning experiments like deep q-learning", "build a self-driving car simulation demo", "learn how actor-critic and DDPG algorithms work", "visualize neural network training in the browser"], "what_it_is": "neurojs is a JavaScript deep learning framework for the browser with a focus on reinforcement learning, supporting deep Q-networks and actor-critic models with replay buffers. It includes demos such as a 2D self-driving car, but the project is explicitly no longer maintained.", "when_to_avoid": ["you need a maintained production deep learning library - use TensorFlow.js instead", "you need GPU acceleration or large-scale training", "you need LSTM or modern architectures, which were never implemented"], "when_to_choose": ["you need a small, readable codebase to study reinforcement learning internals", "you want browser-only neural network demos without server dependencies", "you're following the self-driving car tutorial"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/neurojs", "repo": "janhuenermann/neurojs", "role": "main", "score": 32}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:08:46.788085+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-29T18:21:22.325355+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "f714aae36c9e5c1e383c9b7e674f98892731532329690bdd2ed916c2833f3c5e", "fetched_at": "2026-08-28T04:08:46.788085+00:00", "kind": "readme", "missing": false, "url": "https://github.com/janhuenermann/neurojs"}, {"content_hash": "81380ede047795314ff5928e914cb5a7b7233e6b82322cf00570d15ed34fb003", "fetched_at": "2026-08-29T09:09:57.417649+00:00", "kind": "homepage", "missing": false, "url": "http://janhuenermann.com/projects/learning-to-drive"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:08:46.788085+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-29T18:21:22.325355+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "f714aae36c9e5c1e383c9b7e674f98892731532329690bdd2ed916c2833f3c5e", "fetched_at": "2026-08-28T04:08:46.788085+00:00", "kind": "readme", "missing": false, "url": "https://github.com/janhuenermann/neurojs"}, {"content_hash": "81380ede047795314ff5928e914cb5a7b7233e6b82322cf00570d15ed34fb003", "fetched_at": "2026-08-29T09:09:57.417649+00:00", "kind": "homepage", "missing": false, "url": "http://janhuenermann.com/projects/learning-to-drive"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-29T18:21:22.325355+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "f714aae36c9e5c1e383c9b7e674f98892731532329690bdd2ed916c2833f3c5e", "fetched_at": "2026-08-28T04:08:46.788085+00:00", "kind": "readme", "missing": false, "url": "https://github.com/janhuenermann/neurojs"}, {"content_hash": "81380ede047795314ff5928e914cb5a7b7233e6b82322cf00570d15ed34fb003", "fetched_at": "2026-08-29T09:09:57.417649+00:00", "kind": "homepage", "missing": false, "url": "http://janhuenermann.com/projects/learning-to-drive"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:08:46.788085+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:08:46.788085+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:08:46.788085+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-29T18:21:22.325355+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "f714aae36c9e5c1e383c9b7e674f98892731532329690bdd2ed916c2833f3c5e", "fetched_at": "2026-08-28T04:08:46.788085+00:00", "kind": "readme", "missing": false, "url": "https://github.com/janhuenermann/neurojs"}, {"content_hash": "81380ede047795314ff5928e914cb5a7b7233e6b82322cf00570d15ed34fb003", "fetched_at": "2026-08-29T09:09:57.417649+00:00", "kind": "homepage", "missing": false, "url": "http://janhuenermann.com/projects/learning-to-drive"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:08:46.788085+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:08:46.788085+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-29T18:21:22.325355+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "f714aae36c9e5c1e383c9b7e674f98892731532329690bdd2ed916c2833f3c5e", "fetched_at": "2026-08-28T04:08:46.788085+00:00", "kind": "readme", "missing": false, "url": "https://github.com/janhuenermann/neurojs"}, {"content_hash": "81380ede047795314ff5928e914cb5a7b7233e6b82322cf00570d15ed34fb003", "fetched_at": "2026-08-29T09:09:57.417649+00:00", "kind": "homepage", "missing": false, "url": "http://janhuenermann.com/projects/learning-to-drive"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:08:46.788085+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:08:46.788085+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:08:46.788085+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-29T18:21:22.325355+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "f714aae36c9e5c1e383c9b7e674f98892731532329690bdd2ed916c2833f3c5e", "fetched_at": "2026-08-28T04:08:46.788085+00:00", "kind": "readme", "missing": false, "url": "https://github.com/janhuenermann/neurojs"}, {"content_hash": "81380ede047795314ff5928e914cb5a7b7233e6b82322cf00570d15ed34fb003", "fetched_at": "2026-08-29T09:09:57.417649+00:00", "kind": "homepage", "missing": false, "url": "http://janhuenermann.com/projects/learning-to-drive"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:08:46.788085+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:08:46.788085+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-29T18:21:22.325355+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "f714aae36c9e5c1e383c9b7e674f98892731532329690bdd2ed916c2833f3c5e", "fetched_at": "2026-08-28T04:08:46.788085+00:00", "kind": "readme", "missing": false, "url": "https://github.com/janhuenermann/neurojs"}, {"content_hash": "81380ede047795314ff5928e914cb5a7b7233e6b82322cf00570d15ed34fb003", "fetched_at": "2026-08-29T09:09:57.417649+00:00", "kind": "homepage", "missing": false, "url": "http://janhuenermann.com/projects/learning-to-drive"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-29T18:21:22.325355+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "f714aae36c9e5c1e383c9b7e674f98892731532329690bdd2ed916c2833f3c5e", "fetched_at": "2026-08-28T04:08:46.788085+00:00", "kind": "readme", "missing": false, "url": "https://github.com/janhuenermann/neurojs"}, {"content_hash": "81380ede047795314ff5928e914cb5a7b7233e6b82322cf00570d15ed34fb003", "fetched_at": "2026-08-29T09:09:57.417649+00:00", "kind": "homepage", "missing": false, "url": "http://janhuenermann.com/projects/learning-to-drive"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-29T18:21:22.325355+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "f714aae36c9e5c1e383c9b7e674f98892731532329690bdd2ed916c2833f3c5e", "fetched_at": "2026-08-28T04:08:46.788085+00:00", "kind": "readme", "missing": false, "url": "https://github.com/janhuenermann/neurojs"}, {"content_hash": "81380ede047795314ff5928e914cb5a7b7233e6b82322cf00570d15ed34fb003", "fetched_at": "2026-08-29T09:09:57.417649+00:00", "kind": "homepage", "missing": false, "url": "http://janhuenermann.com/projects/learning-to-drive"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-29T18:21:22.325355+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "f714aae36c9e5c1e383c9b7e674f98892731532329690bdd2ed916c2833f3c5e", "fetched_at": "2026-08-28T04:08:46.788085+00:00", "kind": "readme", "missing": false, "url": "https://github.com/janhuenermann/neurojs"}, {"content_hash": "81380ede047795314ff5928e914cb5a7b7233e6b82322cf00570d15ed34fb003", "fetched_at": "2026-08-29T09:09:57.417649+00:00", "kind": "homepage", "missing": false, "url": "http://janhuenermann.com/projects/learning-to-drive"}], "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": 3636, "days_push": 1058, "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}}