{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:MCZHN55JQBZD6GAVEMWLH2XHP7","short_pith_number":"pith:MCZHN55J","canonical_record":{"source":{"id":"1510.01784","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2015-10-06T23:46:15Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"99297d0173642bc4378b7940b3df282757f4932a6b11ee9ea128f6f03266c2d3","abstract_canon_sha256":"96a1dcbfe17384c5681d803336a3aae06154d7111c94aabb341e4f9fa6bfb0d6"},"schema_version":"1.0"},"canonical_sha256":"60b276f7a980723f1815232cb3eae77fd163ce63124aa77ac1a9301dcd23edc0","source":{"kind":"arxiv","id":"1510.01784","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.01784","created_at":"2026-05-18T01:21:19Z"},{"alias_kind":"arxiv_version","alias_value":"1510.01784v1","created_at":"2026-05-18T01:21:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.01784","created_at":"2026-05-18T01:21:19Z"},{"alias_kind":"pith_short_12","alias_value":"MCZHN55JQBZD","created_at":"2026-05-18T12:29:32Z"},{"alias_kind":"pith_short_16","alias_value":"MCZHN55JQBZD6GAV","created_at":"2026-05-18T12:29:32Z"},{"alias_kind":"pith_short_8","alias_value":"MCZHN55J","created_at":"2026-05-18T12:29:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:MCZHN55JQBZD6GAVEMWLH2XHP7","target":"record","payload":{"canonical_record":{"source":{"id":"1510.01784","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2015-10-06T23:46:15Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"99297d0173642bc4378b7940b3df282757f4932a6b11ee9ea128f6f03266c2d3","abstract_canon_sha256":"96a1dcbfe17384c5681d803336a3aae06154d7111c94aabb341e4f9fa6bfb0d6"},"schema_version":"1.0"},"canonical_sha256":"60b276f7a980723f1815232cb3eae77fd163ce63124aa77ac1a9301dcd23edc0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:21:19.344037Z","signature_b64":"DATFen0BSUqnNxa5SSlziiq455Ciivg0UOmx8UaKsq/Cz3ASjXDvDmZaHh8GNpxJejmjLtNPvOK4l7v4/XexCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"60b276f7a980723f1815232cb3eae77fd163ce63124aa77ac1a9301dcd23edc0","last_reissued_at":"2026-05-18T01:21:19.343361Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:21:19.343361Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1510.01784","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":"2026-05-18T01:21:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"84qd5bO+tI0jbNRUsog5wdJ+7z9u2WNc+K7cC58eUrEBHWG4roaPOqDaYPvjkkNcSPXlf3vkVAVoCpoMsQj9BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T23:18:28.670377Z"},"content_sha256":"ea7afdae17efeb30ebf65eb4187107a0cc9f2e6f80305721a978c83de6918e2e","schema_version":"1.0","event_id":"sha256:ea7afdae17efeb30ebf65eb4187107a0cc9f2e6f80305721a978c83de6918e2e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:MCZHN55JQBZD6GAVEMWLH2XHP7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"VBPR: Visual Bayesian Personalized Ranking from Implicit Feedback","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.AI"],"primary_cat":"cs.IR","authors_text":"Julian McAuley, Ruining He","submitted_at":"2015-10-06T23:46:15Z","abstract_excerpt":"Modern recommender systems model people and items by discovering or `teasing apart' the underlying dimensions that encode the properties of items and users' preferences toward them. Critically, such dimensions are uncovered based on user feedback, often in implicit form (such as purchase histories, browsing logs, etc.); in addition, some recommender systems make use of side information, such as product attributes, temporal information, or review text. However one important feature that is typically ignored by existing personalized recommendation and ranking methods is the visual appearance of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.01784","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":"2026-05-18T01:21:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1jknccgkAsdIkkyaRDYeEc5Gvfbdocdr8YBJUMT/YJxfT6CQ/NFD58Cnw7DTSLiuOIGRfpPtIt2CqtZ5+HyeAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T23:18:28.670965Z"},"content_sha256":"4e6aea830ff634fad4598e6b383a353ec7ce249b2801868c22d5028a81fc18fd","schema_version":"1.0","event_id":"sha256:4e6aea830ff634fad4598e6b383a353ec7ce249b2801868c22d5028a81fc18fd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MCZHN55JQBZD6GAVEMWLH2XHP7/bundle.json","state_url":"https://pith.science/pith/MCZHN55JQBZD6GAVEMWLH2XHP7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MCZHN55JQBZD6GAVEMWLH2XHP7/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":"2026-05-30T23:18:28Z","links":{"resolver":"https://pith.science/pith/MCZHN55JQBZD6GAVEMWLH2XHP7","bundle":"https://pith.science/pith/MCZHN55JQBZD6GAVEMWLH2XHP7/bundle.json","state":"https://pith.science/pith/MCZHN55JQBZD6GAVEMWLH2XHP7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MCZHN55JQBZD6GAVEMWLH2XHP7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:MCZHN55JQBZD6GAVEMWLH2XHP7","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":"96a1dcbfe17384c5681d803336a3aae06154d7111c94aabb341e4f9fa6bfb0d6","cross_cats_sorted":["cs.AI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2015-10-06T23:46:15Z","title_canon_sha256":"99297d0173642bc4378b7940b3df282757f4932a6b11ee9ea128f6f03266c2d3"},"schema_version":"1.0","source":{"id":"1510.01784","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.01784","created_at":"2026-05-18T01:21:19Z"},{"alias_kind":"arxiv_version","alias_value":"1510.01784v1","created_at":"2026-05-18T01:21:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.01784","created_at":"2026-05-18T01:21:19Z"},{"alias_kind":"pith_short_12","alias_value":"MCZHN55JQBZD","created_at":"2026-05-18T12:29:32Z"},{"alias_kind":"pith_short_16","alias_value":"MCZHN55JQBZD6GAV","created_at":"2026-05-18T12:29:32Z"},{"alias_kind":"pith_short_8","alias_value":"MCZHN55J","created_at":"2026-05-18T12:29:32Z"}],"graph_snapshots":[{"event_id":"sha256:4e6aea830ff634fad4598e6b383a353ec7ce249b2801868c22d5028a81fc18fd","target":"graph","created_at":"2026-05-18T01:21:19Z","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":"Modern recommender systems model people and items by discovering or `teasing apart' the underlying dimensions that encode the properties of items and users' preferences toward them. Critically, such dimensions are uncovered based on user feedback, often in implicit form (such as purchase histories, browsing logs, etc.); in addition, some recommender systems make use of side information, such as product attributes, temporal information, or review text. However one important feature that is typically ignored by existing personalized recommendation and ranking methods is the visual appearance of ","authors_text":"Julian McAuley, Ruining He","cross_cats":["cs.AI"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2015-10-06T23:46:15Z","title":"VBPR: Visual Bayesian Personalized Ranking from Implicit Feedback"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.01784","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:ea7afdae17efeb30ebf65eb4187107a0cc9f2e6f80305721a978c83de6918e2e","target":"record","created_at":"2026-05-18T01:21:19Z","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":"96a1dcbfe17384c5681d803336a3aae06154d7111c94aabb341e4f9fa6bfb0d6","cross_cats_sorted":["cs.AI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2015-10-06T23:46:15Z","title_canon_sha256":"99297d0173642bc4378b7940b3df282757f4932a6b11ee9ea128f6f03266c2d3"},"schema_version":"1.0","source":{"id":"1510.01784","kind":"arxiv","version":1}},"canonical_sha256":"60b276f7a980723f1815232cb3eae77fd163ce63124aa77ac1a9301dcd23edc0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"60b276f7a980723f1815232cb3eae77fd163ce63124aa77ac1a9301dcd23edc0","first_computed_at":"2026-05-18T01:21:19.343361Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:21:19.343361Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DATFen0BSUqnNxa5SSlziiq455Ciivg0UOmx8UaKsq/Cz3ASjXDvDmZaHh8GNpxJejmjLtNPvOK4l7v4/XexCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:21:19.344037Z","signed_message":"canonical_sha256_bytes"},"source_id":"1510.01784","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ea7afdae17efeb30ebf65eb4187107a0cc9f2e6f80305721a978c83de6918e2e","sha256:4e6aea830ff634fad4598e6b383a353ec7ce249b2801868c22d5028a81fc18fd"],"state_sha256":"864bf15b6d6bf52d0159d8eadf2cd4783101a9f53b580a356df863df966102ef"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"B3rvUK9J4LrO9iSsihAw+ZXrwf531qPbJ//y01ZRBDNLH7Hzd2fKbfPiuoGkDnsjK1jQ/vvrZ8vhORlflXk9Ag==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T23:18:28.674328Z","bundle_sha256":"ec1e520b680991174d1cf51f391baecd1ac313791e0bb9873e015c80431a3d37"}}