{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:VX76OZMFQDUDY5MPP5HBZQ6C2N","short_pith_number":"pith:VX76OZMF","canonical_record":{"source":{"id":"1908.05632","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2019-08-15T16:46:03Z","cross_cats_sorted":[],"title_canon_sha256":"65988ff08817eff6596e09e60d86c9e3c2e64f133a3a3cf7c93377483c4df268","abstract_canon_sha256":"76764504a32cf225f6bd1f4f3f67eac4c24b649d69dfe848422a0721745f2124"},"schema_version":"1.0"},"canonical_sha256":"adffe7658580e83c758f7f4e1cc3c2d3721329c0f4cc71b3768fe0ba3cc24b77","source":{"kind":"arxiv","id":"1908.05632","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.05632","created_at":"2026-07-04T23:56:54Z"},{"alias_kind":"arxiv_version","alias_value":"1908.05632v1","created_at":"2026-07-04T23:56:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.05632","created_at":"2026-07-04T23:56:54Z"},{"alias_kind":"pith_short_12","alias_value":"VX76OZMFQDUD","created_at":"2026-07-04T23:56:54Z"},{"alias_kind":"pith_short_16","alias_value":"VX76OZMFQDUDY5MP","created_at":"2026-07-04T23:56:54Z"},{"alias_kind":"pith_short_8","alias_value":"VX76OZMF","created_at":"2026-07-04T23:56:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:VX76OZMFQDUDY5MPP5HBZQ6C2N","target":"record","payload":{"canonical_record":{"source":{"id":"1908.05632","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2019-08-15T16:46:03Z","cross_cats_sorted":[],"title_canon_sha256":"65988ff08817eff6596e09e60d86c9e3c2e64f133a3a3cf7c93377483c4df268","abstract_canon_sha256":"76764504a32cf225f6bd1f4f3f67eac4c24b649d69dfe848422a0721745f2124"},"schema_version":"1.0"},"canonical_sha256":"adffe7658580e83c758f7f4e1cc3c2d3721329c0f4cc71b3768fe0ba3cc24b77","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T23:56:54.468378Z","signature_b64":"eDtwpCfcfMTtAMh73B/JyGOlRXJPmFjNF2sGOB0WiiKIbJVtfmlW1pj8XxLLb7rJv3gWxBki46iN8R+kyzGODw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"adffe7658580e83c758f7f4e1cc3c2d3721329c0f4cc71b3768fe0ba3cc24b77","last_reissued_at":"2026-07-04T23:56:54.467843Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T23:56:54.467843Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1908.05632","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T23:56:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nfhc4ILP/LDlh9FJC21htEGvv0hb5IJjUN0W5XOQAnOz4INj4IIkeST+2QKPCVFWbFJ5JNTf2v0puy+XRxluDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T06:50:26.313334Z"},"content_sha256":"f71554b26b6432fe7b6730a606aabf8c122a58c6feeca9fcf1421bf965a3e6bb","schema_version":"1.0","event_id":"sha256:f71554b26b6432fe7b6730a606aabf8c122a58c6feeca9fcf1421bf965a3e6bb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:VX76OZMFQDUDY5MPP5HBZQ6C2N","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Tracing Player Knowledge in a Parallel Programming Educational Game","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.AI","authors_text":"Brian Smith, Bruce Char, Jichen Zhu, Katelyn Alderfer, Pavan Kantharaju, Santiago Onta\\~n\\'on","submitted_at":"2019-08-15T16:46:03Z","abstract_excerpt":"This paper focuses on \"tracing player knowledge\" in educational games. Specifically, given a set of concepts or skills required to master a game, the goal is to estimate the likelihood with which the current player has mastery of each of those concepts or skills. The main contribution of the paper is an approach that integrates machine learning and domain knowledge rules to find when the player applied a certain skill and either succeeded or failed. This is then given as input to a standard knowledge tracing module (such as those from Intelligent Tutoring Systems) to perform knowledge tracing."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.05632","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1908.05632/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T23:56:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TJWkJzZ+I/SxJ11ZDEFtohTYiiV6DSU0TCRN6WZz+kFk0h/5JGOFhNo4npkdekuPZcRw3l1XyMNQOPLq4GabBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T06:50:26.313870Z"},"content_sha256":"ce192777810ab55275d4aae9d59a0ec8a627053f0ed8372cbeb170b4bf8c0ce2","schema_version":"1.0","event_id":"sha256:ce192777810ab55275d4aae9d59a0ec8a627053f0ed8372cbeb170b4bf8c0ce2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VX76OZMFQDUDY5MPP5HBZQ6C2N/bundle.json","state_url":"https://pith.science/pith/VX76OZMFQDUDY5MPP5HBZQ6C2N/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VX76OZMFQDUDY5MPP5HBZQ6C2N/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-16T06:50:26Z","links":{"resolver":"https://pith.science/pith/VX76OZMFQDUDY5MPP5HBZQ6C2N","bundle":"https://pith.science/pith/VX76OZMFQDUDY5MPP5HBZQ6C2N/bundle.json","state":"https://pith.science/pith/VX76OZMFQDUDY5MPP5HBZQ6C2N/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VX76OZMFQDUDY5MPP5HBZQ6C2N/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:VX76OZMFQDUDY5MPP5HBZQ6C2N","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":"76764504a32cf225f6bd1f4f3f67eac4c24b649d69dfe848422a0721745f2124","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2019-08-15T16:46:03Z","title_canon_sha256":"65988ff08817eff6596e09e60d86c9e3c2e64f133a3a3cf7c93377483c4df268"},"schema_version":"1.0","source":{"id":"1908.05632","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.05632","created_at":"2026-07-04T23:56:54Z"},{"alias_kind":"arxiv_version","alias_value":"1908.05632v1","created_at":"2026-07-04T23:56:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.05632","created_at":"2026-07-04T23:56:54Z"},{"alias_kind":"pith_short_12","alias_value":"VX76OZMFQDUD","created_at":"2026-07-04T23:56:54Z"},{"alias_kind":"pith_short_16","alias_value":"VX76OZMFQDUDY5MP","created_at":"2026-07-04T23:56:54Z"},{"alias_kind":"pith_short_8","alias_value":"VX76OZMF","created_at":"2026-07-04T23:56:54Z"}],"graph_snapshots":[{"event_id":"sha256:ce192777810ab55275d4aae9d59a0ec8a627053f0ed8372cbeb170b4bf8c0ce2","target":"graph","created_at":"2026-07-04T23:56:54Z","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/1908.05632/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This paper focuses on \"tracing player knowledge\" in educational games. Specifically, given a set of concepts or skills required to master a game, the goal is to estimate the likelihood with which the current player has mastery of each of those concepts or skills. The main contribution of the paper is an approach that integrates machine learning and domain knowledge rules to find when the player applied a certain skill and either succeeded or failed. This is then given as input to a standard knowledge tracing module (such as those from Intelligent Tutoring Systems) to perform knowledge tracing.","authors_text":"Brian Smith, Bruce Char, Jichen Zhu, Katelyn Alderfer, Pavan Kantharaju, Santiago Onta\\~n\\'on","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2019-08-15T16:46:03Z","title":"Tracing Player Knowledge in a Parallel Programming Educational Game"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.05632","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:f71554b26b6432fe7b6730a606aabf8c122a58c6feeca9fcf1421bf965a3e6bb","target":"record","created_at":"2026-07-04T23:56:54Z","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":"76764504a32cf225f6bd1f4f3f67eac4c24b649d69dfe848422a0721745f2124","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2019-08-15T16:46:03Z","title_canon_sha256":"65988ff08817eff6596e09e60d86c9e3c2e64f133a3a3cf7c93377483c4df268"},"schema_version":"1.0","source":{"id":"1908.05632","kind":"arxiv","version":1}},"canonical_sha256":"adffe7658580e83c758f7f4e1cc3c2d3721329c0f4cc71b3768fe0ba3cc24b77","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"adffe7658580e83c758f7f4e1cc3c2d3721329c0f4cc71b3768fe0ba3cc24b77","first_computed_at":"2026-07-04T23:56:54.467843Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T23:56:54.467843Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eDtwpCfcfMTtAMh73B/JyGOlRXJPmFjNF2sGOB0WiiKIbJVtfmlW1pj8XxLLb7rJv3gWxBki46iN8R+kyzGODw==","signature_status":"signed_v1","signed_at":"2026-07-04T23:56:54.468378Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.05632","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f71554b26b6432fe7b6730a606aabf8c122a58c6feeca9fcf1421bf965a3e6bb","sha256:ce192777810ab55275d4aae9d59a0ec8a627053f0ed8372cbeb170b4bf8c0ce2"],"state_sha256":"47153eda88ebfb51152e736c9407690adf53470bd83b2a9bfa07eae56a1c8999"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"O/yZDasnzYsW9jm+uJ1+JHN3s14LsH7PYmkrcjHlnNRfbbL+BzbaRneskRQkvsoYGrwNhnWK07zeFqYQ3vs4CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-16T06:50:26.318902Z","bundle_sha256":"70d50de816015209376bd78c50c47ff76261ce85d04985f496be6c8ae858857b"}}