{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:4B44Y5PJNUPOS64TTHY5IKN5PL","short_pith_number":"pith:4B44Y5PJ","canonical_record":{"source":{"id":"1608.07952","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2016-08-29T08:47:12Z","cross_cats_sorted":[],"title_canon_sha256":"b320063f99c1e4c108a40f9c1e6e2ca50b44e5ad7b26ba936ead3f63c07c5e13","abstract_canon_sha256":"a18bd863e314bc8908a1e13ded518293cf912fe7bef942bc0fa923809f960177"},"schema_version":"1.0"},"canonical_sha256":"e079cc75e96d1ee97b9399f1d429bd7ac93835866d15e4bb02e108cba04bc9a2","source":{"kind":"arxiv","id":"1608.07952","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.07952","created_at":"2026-05-18T00:57:37Z"},{"alias_kind":"arxiv_version","alias_value":"1608.07952v3","created_at":"2026-05-18T00:57:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.07952","created_at":"2026-05-18T00:57:37Z"},{"alias_kind":"pith_short_12","alias_value":"4B44Y5PJNUPO","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_16","alias_value":"4B44Y5PJNUPOS64T","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_8","alias_value":"4B44Y5PJ","created_at":"2026-05-18T12:29:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:4B44Y5PJNUPOS64TTHY5IKN5PL","target":"record","payload":{"canonical_record":{"source":{"id":"1608.07952","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2016-08-29T08:47:12Z","cross_cats_sorted":[],"title_canon_sha256":"b320063f99c1e4c108a40f9c1e6e2ca50b44e5ad7b26ba936ead3f63c07c5e13","abstract_canon_sha256":"a18bd863e314bc8908a1e13ded518293cf912fe7bef942bc0fa923809f960177"},"schema_version":"1.0"},"canonical_sha256":"e079cc75e96d1ee97b9399f1d429bd7ac93835866d15e4bb02e108cba04bc9a2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:57:37.506583Z","signature_b64":"lo8N2trBXRhAYLB5EeA5TURs3ZA2aHaAqJq1qaP6Dp0xDcB0GKzsU3J/4G7hDFk2ASkEZE24WaaJ49fje/zfCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e079cc75e96d1ee97b9399f1d429bd7ac93835866d15e4bb02e108cba04bc9a2","last_reissued_at":"2026-05-18T00:57:37.506086Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:57:37.506086Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1608.07952","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:57:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MCH2fXXbh1qWVPfB1sT86sOu4axZ8GvB2AITE45ifKCR7n/tbE42JFzjVSDsuE/kksRgEAUu8onppoUm1aLVCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-18T20:05:42.276691Z"},"content_sha256":"f794867e695546a980663654f0d08ffacb871888e3e0697ef043f0ec388746f3","schema_version":"1.0","event_id":"sha256:f794867e695546a980663654f0d08ffacb871888e3e0697ef043f0ec388746f3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:4B44Y5PJNUPOS64TTHY5IKN5PL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Topical Generalization for Presentation of User Profiles","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.IR","authors_text":"Alex Olieman, Emil de Valk, Gleb Satyukov, Jaap Kamps","submitted_at":"2016-08-29T08:47:12Z","abstract_excerpt":"Fine-grained user profile generation approaches have made it increasingly feasible to display on a profile page in which topics a user has expertise or interest. Earlier work on topical user profiling has been directed at enhancing search and personalization functionality, but making such profiles useful for human consumption presents new challenges. With this work, we have taken a first step toward a semantic layout mode for topical user profiles. We have developed a topical generalization approach which finds coherent groups of topics and adds labels to them, based on their association with "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.07952","kind":"arxiv","version":3},"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":"2026-05-18T00:57:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tWYOliw47K1wa5xbD1r7QpzYBic4QR/DLYFd9QhB4E95auc7JOOvg69pEMfL44c99A0G5Ayv/wY7tD8Df2BnAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-18T20:05:42.277301Z"},"content_sha256":"0a33330f759405fa1c852bed0cee4c48ca0cfb053acccff8b84797c422b10a84","schema_version":"1.0","event_id":"sha256:0a33330f759405fa1c852bed0cee4c48ca0cfb053acccff8b84797c422b10a84"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4B44Y5PJNUPOS64TTHY5IKN5PL/bundle.json","state_url":"https://pith.science/pith/4B44Y5PJNUPOS64TTHY5IKN5PL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4B44Y5PJNUPOS64TTHY5IKN5PL/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":"2026-05-18T20:05:42Z","links":{"resolver":"https://pith.science/pith/4B44Y5PJNUPOS64TTHY5IKN5PL","bundle":"https://pith.science/pith/4B44Y5PJNUPOS64TTHY5IKN5PL/bundle.json","state":"https://pith.science/pith/4B44Y5PJNUPOS64TTHY5IKN5PL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4B44Y5PJNUPOS64TTHY5IKN5PL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:4B44Y5PJNUPOS64TTHY5IKN5PL","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":"a18bd863e314bc8908a1e13ded518293cf912fe7bef942bc0fa923809f960177","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2016-08-29T08:47:12Z","title_canon_sha256":"b320063f99c1e4c108a40f9c1e6e2ca50b44e5ad7b26ba936ead3f63c07c5e13"},"schema_version":"1.0","source":{"id":"1608.07952","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.07952","created_at":"2026-05-18T00:57:37Z"},{"alias_kind":"arxiv_version","alias_value":"1608.07952v3","created_at":"2026-05-18T00:57:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.07952","created_at":"2026-05-18T00:57:37Z"},{"alias_kind":"pith_short_12","alias_value":"4B44Y5PJNUPO","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_16","alias_value":"4B44Y5PJNUPOS64T","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_8","alias_value":"4B44Y5PJ","created_at":"2026-05-18T12:29:58Z"}],"graph_snapshots":[{"event_id":"sha256:0a33330f759405fa1c852bed0cee4c48ca0cfb053acccff8b84797c422b10a84","target":"graph","created_at":"2026-05-18T00:57:37Z","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":"Fine-grained user profile generation approaches have made it increasingly feasible to display on a profile page in which topics a user has expertise or interest. Earlier work on topical user profiling has been directed at enhancing search and personalization functionality, but making such profiles useful for human consumption presents new challenges. With this work, we have taken a first step toward a semantic layout mode for topical user profiles. We have developed a topical generalization approach which finds coherent groups of topics and adds labels to them, based on their association with ","authors_text":"Alex Olieman, Emil de Valk, Gleb Satyukov, Jaap Kamps","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2016-08-29T08:47:12Z","title":"Topical Generalization for Presentation of User Profiles"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.07952","kind":"arxiv","version":3},"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:f794867e695546a980663654f0d08ffacb871888e3e0697ef043f0ec388746f3","target":"record","created_at":"2026-05-18T00:57:37Z","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":"a18bd863e314bc8908a1e13ded518293cf912fe7bef942bc0fa923809f960177","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2016-08-29T08:47:12Z","title_canon_sha256":"b320063f99c1e4c108a40f9c1e6e2ca50b44e5ad7b26ba936ead3f63c07c5e13"},"schema_version":"1.0","source":{"id":"1608.07952","kind":"arxiv","version":3}},"canonical_sha256":"e079cc75e96d1ee97b9399f1d429bd7ac93835866d15e4bb02e108cba04bc9a2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e079cc75e96d1ee97b9399f1d429bd7ac93835866d15e4bb02e108cba04bc9a2","first_computed_at":"2026-05-18T00:57:37.506086Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:57:37.506086Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lo8N2trBXRhAYLB5EeA5TURs3ZA2aHaAqJq1qaP6Dp0xDcB0GKzsU3J/4G7hDFk2ASkEZE24WaaJ49fje/zfCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:57:37.506583Z","signed_message":"canonical_sha256_bytes"},"source_id":"1608.07952","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f794867e695546a980663654f0d08ffacb871888e3e0697ef043f0ec388746f3","sha256:0a33330f759405fa1c852bed0cee4c48ca0cfb053acccff8b84797c422b10a84"],"state_sha256":"7dd6f3c3a3d9e13b68724df076c55ab987e55d716533adb8304f8764557e5584"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BiaY9taBJq7T2Q5ksun/Btz7WKNli2w9SKUNOKK1X+BeJY5QXcAoF3JyY0QbZ6UrJ51kPnD3c1ZziTmYXUUWCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-18T20:05:42.279303Z","bundle_sha256":"520ba3846a19b80926bd0cf199c8d324eb8ff3f41aa5baf08aaaadae5be89f88"}}