{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:JBDXRFRHWB2MDBDHSJIGYGZ4GF","short_pith_number":"pith:JBDXRFRH","canonical_record":{"source":{"id":"1808.05988","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2018-08-17T20:35:56Z","cross_cats_sorted":["cs.DB"],"title_canon_sha256":"86153caf0ef443fd3acd574243dc7adcc36786003440455156469281a73c9088","abstract_canon_sha256":"fe0dbd73f35fd81cd1b9080958b09326fb5676fbfd40f232722df2aab19949cf"},"schema_version":"1.0"},"canonical_sha256":"4847789627b074c1846792506c1b3c315f8ad8b277dd9c1cbeec6375e86eac67","source":{"kind":"arxiv","id":"1808.05988","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.05988","created_at":"2026-05-18T00:07:46Z"},{"alias_kind":"arxiv_version","alias_value":"1808.05988v1","created_at":"2026-05-18T00:07:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.05988","created_at":"2026-05-18T00:07:46Z"},{"alias_kind":"pith_short_12","alias_value":"JBDXRFRHWB2M","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_16","alias_value":"JBDXRFRHWB2MDBDH","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_8","alias_value":"JBDXRFRH","created_at":"2026-05-18T12:32:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:JBDXRFRHWB2MDBDHSJIGYGZ4GF","target":"record","payload":{"canonical_record":{"source":{"id":"1808.05988","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2018-08-17T20:35:56Z","cross_cats_sorted":["cs.DB"],"title_canon_sha256":"86153caf0ef443fd3acd574243dc7adcc36786003440455156469281a73c9088","abstract_canon_sha256":"fe0dbd73f35fd81cd1b9080958b09326fb5676fbfd40f232722df2aab19949cf"},"schema_version":"1.0"},"canonical_sha256":"4847789627b074c1846792506c1b3c315f8ad8b277dd9c1cbeec6375e86eac67","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:07:46.528784Z","signature_b64":"1H/zo1TlKNLcy5j5JNRYNitPb0uqSdvFOFZUP8IY9QZeUxQ01mmNSE5SPUHHHfzuqhpPGO8l7KHiluOpErQgCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4847789627b074c1846792506c1b3c315f8ad8b277dd9c1cbeec6375e86eac67","last_reissued_at":"2026-05-18T00:07:46.527907Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:07:46.527907Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1808.05988","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":"2026-05-18T00:07:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZqTVilq9Iz6bn91Rf6C5qVIHaEWGeGNEVdnhr+6GB2D76U9KR7hLBcZwZfRPMjSIbRkXii6h6oYUIv3ctj82Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T07:43:37.235685Z"},"content_sha256":"fb2fabc6917c94163a4689d633dfe3c386e54e87c01c11027b458d8baf4fad01","schema_version":"1.0","event_id":"sha256:fb2fabc6917c94163a4689d633dfe3c386e54e87c01c11027b458d8baf4fad01"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:JBDXRFRHWB2MDBDHSJIGYGZ4GF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Attainment Ratings for Graph-Query Recommendation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.DB"],"primary_cat":"cs.IR","authors_text":"Ching-Yung Lin, Garud Iyengar, Hal Cooper","submitted_at":"2018-08-17T20:35:56Z","abstract_excerpt":"The video game industry is larger than both the film and music industries combined. Recommender systems for video games have received relatively scant academic attention, despite the uniqueness of the medium and its data. In this paper, we introduce a graph-based recommender system that makes use of interactivity, arguably the most significant feature of video gaming. We show that the use of implicit data that tracks user-game interactions and levels of attainment (e.g. Sony Playstation Trophies, Microsoft Xbox Achievements) has high predictive value when making recommendations. Furthermore, w"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.05988","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":""},"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":"2026-05-18T00:07:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KlS14kw4ncpKOfGkcyMhZeQ+DU0lpvVGIqGgGDCa71r2hwMIJWKrTxL8WqyT1K5TGCzfVP2EFeNPOzZ1W9eeDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T07:43:37.236376Z"},"content_sha256":"fac0441cd92e4ee5ddf79053800efb1adcde070f9805a0dac621fc5e89d74a78","schema_version":"1.0","event_id":"sha256:fac0441cd92e4ee5ddf79053800efb1adcde070f9805a0dac621fc5e89d74a78"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JBDXRFRHWB2MDBDHSJIGYGZ4GF/bundle.json","state_url":"https://pith.science/pith/JBDXRFRHWB2MDBDHSJIGYGZ4GF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JBDXRFRHWB2MDBDHSJIGYGZ4GF/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":"2026-05-30T07:43:37Z","links":{"resolver":"https://pith.science/pith/JBDXRFRHWB2MDBDHSJIGYGZ4GF","bundle":"https://pith.science/pith/JBDXRFRHWB2MDBDHSJIGYGZ4GF/bundle.json","state":"https://pith.science/pith/JBDXRFRHWB2MDBDHSJIGYGZ4GF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JBDXRFRHWB2MDBDHSJIGYGZ4GF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:JBDXRFRHWB2MDBDHSJIGYGZ4GF","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":"fe0dbd73f35fd81cd1b9080958b09326fb5676fbfd40f232722df2aab19949cf","cross_cats_sorted":["cs.DB"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2018-08-17T20:35:56Z","title_canon_sha256":"86153caf0ef443fd3acd574243dc7adcc36786003440455156469281a73c9088"},"schema_version":"1.0","source":{"id":"1808.05988","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.05988","created_at":"2026-05-18T00:07:46Z"},{"alias_kind":"arxiv_version","alias_value":"1808.05988v1","created_at":"2026-05-18T00:07:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.05988","created_at":"2026-05-18T00:07:46Z"},{"alias_kind":"pith_short_12","alias_value":"JBDXRFRHWB2M","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_16","alias_value":"JBDXRFRHWB2MDBDH","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_8","alias_value":"JBDXRFRH","created_at":"2026-05-18T12:32:31Z"}],"graph_snapshots":[{"event_id":"sha256:fac0441cd92e4ee5ddf79053800efb1adcde070f9805a0dac621fc5e89d74a78","target":"graph","created_at":"2026-05-18T00:07:46Z","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":"The video game industry is larger than both the film and music industries combined. Recommender systems for video games have received relatively scant academic attention, despite the uniqueness of the medium and its data. In this paper, we introduce a graph-based recommender system that makes use of interactivity, arguably the most significant feature of video gaming. We show that the use of implicit data that tracks user-game interactions and levels of attainment (e.g. Sony Playstation Trophies, Microsoft Xbox Achievements) has high predictive value when making recommendations. Furthermore, w","authors_text":"Ching-Yung Lin, Garud Iyengar, Hal Cooper","cross_cats":["cs.DB"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2018-08-17T20:35:56Z","title":"Attainment Ratings for Graph-Query Recommendation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.05988","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:fb2fabc6917c94163a4689d633dfe3c386e54e87c01c11027b458d8baf4fad01","target":"record","created_at":"2026-05-18T00:07:46Z","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":"fe0dbd73f35fd81cd1b9080958b09326fb5676fbfd40f232722df2aab19949cf","cross_cats_sorted":["cs.DB"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2018-08-17T20:35:56Z","title_canon_sha256":"86153caf0ef443fd3acd574243dc7adcc36786003440455156469281a73c9088"},"schema_version":"1.0","source":{"id":"1808.05988","kind":"arxiv","version":1}},"canonical_sha256":"4847789627b074c1846792506c1b3c315f8ad8b277dd9c1cbeec6375e86eac67","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4847789627b074c1846792506c1b3c315f8ad8b277dd9c1cbeec6375e86eac67","first_computed_at":"2026-05-18T00:07:46.527907Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:07:46.527907Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1H/zo1TlKNLcy5j5JNRYNitPb0uqSdvFOFZUP8IY9QZeUxQ01mmNSE5SPUHHHfzuqhpPGO8l7KHiluOpErQgCw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:07:46.528784Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.05988","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fb2fabc6917c94163a4689d633dfe3c386e54e87c01c11027b458d8baf4fad01","sha256:fac0441cd92e4ee5ddf79053800efb1adcde070f9805a0dac621fc5e89d74a78"],"state_sha256":"e6d4e1a2b7ac13bba5e43371bcbdfe73e88979c2690195cff4c8451a1a6c4fd8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P+vA3EfJKLA0Nl2GZ7Qmo3sVWWUIvMaawo5vqyniDnseWauGciZ0PvQQDOwAC+SXqvcBPpjFd8VqriVTBH+9Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T07:43:37.241386Z","bundle_sha256":"a91a9e0931c43e53516765eb99e64c928ee0282672ac79b7b3996f70c515f422"}}