{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:OPF5KQOY2UX3MZTC3FRISTOXKQ","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":"cc05bf623312c431d522dd9ca39215bb328ece8ca53c6e438c2e86aba0c0e9ce","cross_cats_sorted":["cs.HC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2018-07-09T15:19:22Z","title_canon_sha256":"5c9e40f6b2f06f087c4aa79a882ae2b72a7af2928f0ba61ba5a77483c1ab048c"},"schema_version":"1.0","source":{"id":"1807.03224","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.03224","created_at":"2026-05-18T00:11:12Z"},{"alias_kind":"arxiv_version","alias_value":"1807.03224v1","created_at":"2026-05-18T00:11:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.03224","created_at":"2026-05-18T00:11:12Z"},{"alias_kind":"pith_short_12","alias_value":"OPF5KQOY2UX3","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_16","alias_value":"OPF5KQOY2UX3MZTC","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_8","alias_value":"OPF5KQOY","created_at":"2026-05-18T12:32:43Z"}],"graph_snapshots":[{"event_id":"sha256:f8fc2bbe8f8577828558ee2e1cb9dc5df4b5e15b0e92a07809a096888123b9da","target":"graph","created_at":"2026-05-18T00:11:12Z","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"},"paper":{"abstract_excerpt":"This paper presents our experiences in designing, implementing, and piloting an intelligent vocabulary learning tutor. The design builds on several intelligent tutoring design concepts, including graph-based knowledge representation, learner modeling, and adaptive learning content and assessment exposition. Specifically, we design a novel phased learner model approach to enable systematic exposure to words during vocabulary instruction. We also built an example application over the tutor platform that uses a learning activity involving videos and an assessment activity involving word to pictur","authors_text":"Aditya Vempaty, Akimi Gibson, Jennifer Kotler, Prasenjit Dey, Ravi Kokku, Tamer Abuelsaad, Tammy Humphrey","cross_cats":["cs.HC"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2018-07-09T15:19:22Z","title":"Design and Evaluation of a Tutor Platform for Personalized Vocabulary Learning"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.03224","kind":"arxiv","version":1},"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:a6d20010a32450bddcfb715890f0538ed26c8fa607a5bf502552482b349d7df1","target":"record","created_at":"2026-05-18T00:11:12Z","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":"cc05bf623312c431d522dd9ca39215bb328ece8ca53c6e438c2e86aba0c0e9ce","cross_cats_sorted":["cs.HC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2018-07-09T15:19:22Z","title_canon_sha256":"5c9e40f6b2f06f087c4aa79a882ae2b72a7af2928f0ba61ba5a77483c1ab048c"},"schema_version":"1.0","source":{"id":"1807.03224","kind":"arxiv","version":1}},"canonical_sha256":"73cbd541d8d52fb66662d962894dd754304d423c48cb0c7076e2e2ec1ce27e50","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"73cbd541d8d52fb66662d962894dd754304d423c48cb0c7076e2e2ec1ce27e50","first_computed_at":"2026-05-18T00:11:12.374671Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:11:12.374671Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vfHI7gCDC4KI3miBzTkde5U1hKslNio78QmtGDBBbL9uhjzjU5zNnaDeyuvpVpNLui3XmVtuGyICa5kJJ3zaBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:11:12.375401Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.03224","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a6d20010a32450bddcfb715890f0538ed26c8fa607a5bf502552482b349d7df1","sha256:f8fc2bbe8f8577828558ee2e1cb9dc5df4b5e15b0e92a07809a096888123b9da"],"state_sha256":"599937e39df05be5b4807971a84f7d8c38191b8be0ff41ff37e4badf7ec21685"}