{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:R3QT3VM375IEKCUSVB33QSBJUA","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":"36961a1a3edbcbe1038fdcfd20b731a53c75e53596d8d6c0f87293c14d1ab229","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2018-02-23T21:20:24Z","title_canon_sha256":"715c411e91e77b834881a84d79adde3804a91c0de9cbda9207dc1fd44e0f52e4"},"schema_version":"1.0","source":{"id":"1802.08738","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.08738","created_at":"2026-05-18T00:06:05Z"},{"alias_kind":"arxiv_version","alias_value":"1802.08738v1","created_at":"2026-05-18T00:06:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.08738","created_at":"2026-05-18T00:06:05Z"},{"alias_kind":"pith_short_12","alias_value":"R3QT3VM375IE","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_16","alias_value":"R3QT3VM375IEKCUS","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_8","alias_value":"R3QT3VM3","created_at":"2026-05-18T12:32:50Z"}],"graph_snapshots":[{"event_id":"sha256:4ce4d5efc73831f150c0da085ae14f361f4e3c462a2f152c6a90571cbdc1ed17","target":"graph","created_at":"2026-05-18T00:06:05Z","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":"Discussion forums provide a channel for students to engage with peers and course material outside of class, accessible even to commuter and non-traditional populations. As such, forums can build classroom community as well as aid learning, but students do not always take up these tools. We use network analysis to compare three semesters of forum logs from an introductory calculus-based physics course. The networks show dense structures of collaboration that differ significantly between semesters, even though aggregate participation statistics remain steady. After characterizing network structu","authors_text":"Adrienne Traxler, Andrew Gavrin, Rebecca Lindell","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2018-02-23T21:20:24Z","title":"Talking by the numbers: Networks identify productive forum discussions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.08738","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":"sha256:5b7267b07319940828a904212c1b97def143693dc5f096a86e28943242fa743f","target":"record","created_at":"2026-05-18T00:06:05Z","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":"36961a1a3edbcbe1038fdcfd20b731a53c75e53596d8d6c0f87293c14d1ab229","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2018-02-23T21:20:24Z","title_canon_sha256":"715c411e91e77b834881a84d79adde3804a91c0de9cbda9207dc1fd44e0f52e4"},"schema_version":"1.0","source":{"id":"1802.08738","kind":"arxiv","version":1}},"canonical_sha256":"8ee13dd59bff50450a92a877b84829a00f3e7f044057c7c3706c8e02722147e4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8ee13dd59bff50450a92a877b84829a00f3e7f044057c7c3706c8e02722147e4","first_computed_at":"2026-05-18T00:06:05.021748Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:06:05.021748Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AweuuwT+T1veMH1HKlsidPccncQcre1IVSy2+p6idkrQMwAHMukTpVlS7T4LNldyQWgUniieKx/2Ocgx0ix3DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:06:05.022157Z","signed_message":"canonical_sha256_bytes"},"source_id":"1802.08738","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5b7267b07319940828a904212c1b97def143693dc5f096a86e28943242fa743f","sha256:4ce4d5efc73831f150c0da085ae14f361f4e3c462a2f152c6a90571cbdc1ed17"],"state_sha256":"4780dbfd8fee78d1451ad7b324573914b29a574b16c8c2f4b56bb210f990fb17"}