The duplicate check we proposed already works at 40,000 items: MIT's ontology platform flags near-duplicate nodes by lexical plus embedding similarity, refuses edits that orphan a node, and keeps per-node edit histories with attribution.

Evidence 2 passages

• groundsUntitled source

  To preserve structural coherence, the platform requires each node to be linked to at least one generalization, blocks edits that would orphan nodes, flags near-duplicate nodes (based on lexical + embedding similarity) to discourage redundant node creation, and maintains node-level change histories with attribution.

• groundsUntitled source

  Using the methods for automated classification and human editing described in Sections 6.1 to 6.3, our first result was a comprehensive ontology of work activities including approximately 40,000 total activities.

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