{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:2BEH352SBI4WIA7A3ODTZPK6HU","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"9f14fdfd38791599417e30b451ab361fc5faa57ebf87862a25ce3c7e24e02ccb","cross_cats_sorted":["cs.AI","cs.SC"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.HC","submitted_at":"2025-02-04T16:24:42Z","title_canon_sha256":"892cdf6b1d9817d7c25423fa23e962721c2666f679e95626fe2c84654283008e"},"schema_version":"1.0","source":{"id":"2502.02456","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.02456","created_at":"2026-07-05T11:01:03Z"},{"alias_kind":"arxiv_version","alias_value":"2502.02456v4","created_at":"2026-07-05T11:01:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.02456","created_at":"2026-07-05T11:01:03Z"},{"alias_kind":"pith_short_12","alias_value":"2BEH352SBI4W","created_at":"2026-07-05T11:01:03Z"},{"alias_kind":"pith_short_16","alias_value":"2BEH352SBI4WIA7A","created_at":"2026-07-05T11:01:03Z"},{"alias_kind":"pith_short_8","alias_value":"2BEH352S","created_at":"2026-07-05T11:01:03Z"}],"graph_snapshots":[{"event_id":"sha256:2f7991b8d13a4891530ea6dafbf2ce76a76c4dfa48dbe46584f9005e49f38cc1","target":"graph","created_at":"2026-07-05T11:01:03Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2502.02456/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Instructional designers face an overwhelming array of design choices, making it challenging to identify the most effective interventions. To address this issue, I propose the concept of a Model Human Learner, a unified computational model of learning that can aid designers in evaluating candidate interventions. This paper presents the first successful demonstration of this concept, showing that a computational model can accurately predict the outcomes of two human A/B experiments -- one testing a problem sequencing intervention and the other testing an item design intervention. It also demonst","authors_text":"Christopher J. MacLellan","cross_cats":["cs.AI","cs.SC"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.HC","submitted_at":"2025-02-04T16:24:42Z","title":"Model Human Learners: Computational Models to Guide Instructional Design"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.02456","kind":"arxiv","version":4},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:68778a329d49b46a5ee3c0b4111fdd82a34742e01791278600a45dfd5e4c69e8","target":"record","created_at":"2026-07-05T11:01:03Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"9f14fdfd38791599417e30b451ab361fc5faa57ebf87862a25ce3c7e24e02ccb","cross_cats_sorted":["cs.AI","cs.SC"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.HC","submitted_at":"2025-02-04T16:24:42Z","title_canon_sha256":"892cdf6b1d9817d7c25423fa23e962721c2666f679e95626fe2c84654283008e"},"schema_version":"1.0","source":{"id":"2502.02456","kind":"arxiv","version":4}},"canonical_sha256":"d0487df7520a396403e0db873cbd5e3d056b18a6699c64eca9a305db3142510c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d0487df7520a396403e0db873cbd5e3d056b18a6699c64eca9a305db3142510c","first_computed_at":"2026-07-05T11:01:03.412805Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:01:03.412805Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uZOth4zlnhYf4OncucV7/dNkVFWPAF8Kle2TPaiwAEvDn2gPKYS07WyKF3nVYDPLUYHi5HCMevZCy+Lvq+vhBA==","signature_status":"signed_v1","signed_at":"2026-07-05T11:01:03.413297Z","signed_message":"canonical_sha256_bytes"},"source_id":"2502.02456","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:68778a329d49b46a5ee3c0b4111fdd82a34742e01791278600a45dfd5e4c69e8","sha256:2f7991b8d13a4891530ea6dafbf2ce76a76c4dfa48dbe46584f9005e49f38cc1"],"state_sha256":"cb44458d098a6298fdeedbc97b24efb1c9ea7c1cdf3ee09303ec857b478b724f"}