Lenat, Prakash and Shepherd: CYC and large-scale common-sense knowledge

What changed

Presented CYC as a long-term effort to build a large common-sense knowledge base intended to reduce brittleness and knowledge-acquisition bottlenecks in artificial-intelligence systems.

Scientific scope

The record is the exact Winter 1985 AI Magazine article and its proposed CYC programme. Later Cyc implementations, releases, evaluations, commercial organizations and broader knowledge-graph systems remain separate.

Evidence

The linked sources identify this contribution and its scope. WRS has not independently reconstructed the scientific claims. The record is the exact Winter 1985 AI Magazine article and its proposed CYC programme. Later Cyc implementations, releases, evaluations, commercial organizations and broader knowledge-graph systems remain separate.

Contributors

• Douglas B. Lenat · SCIENCE: Named source author of the scoped work; individual effort shares are not measured.
• Mayank Prakash · SCIENCE: Named source author of the scoped work; individual effort shares are not measured.
• Mary Shepherd · SCIENCE: Named source author of the scoped work; individual effort shares are not measured.

• AAAI record for the CYC article
• DBLP record for the CYC article

Provisional WRS assessment, edition 2026-10-16.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.

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