{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:ND3G2VP5E4SGTKD7PCXKTMRKMN","short_pith_number":"pith:ND3G2VP5","canonical_record":{"source":{"id":"2605.21510","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2026-05-13T10:38:31Z","cross_cats_sorted":["cs.LG"],"title_canon_sha256":"4e201249487b40f333e1b97b13e53c7b594cc57c739839985f18f593d708301b","abstract_canon_sha256":"b9c2b4ff04f8665c35cb3c8261725f6895a7a85d71a2acd296a66ef8bd236f52"},"schema_version":"1.0"},"canonical_sha256":"68f66d55fd272469a87f78aea9b22a63402063bcf33a48e1267414c3b2dc894b","source":{"kind":"arxiv","id":"2605.21510","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.21510","created_at":"2026-05-22T00:02:27Z"},{"alias_kind":"arxiv_version","alias_value":"2605.21510v1","created_at":"2026-05-22T00:02:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.21510","created_at":"2026-05-22T00:02:27Z"},{"alias_kind":"pith_short_12","alias_value":"ND3G2VP5E4SG","created_at":"2026-05-22T00:02:27Z"},{"alias_kind":"pith_short_16","alias_value":"ND3G2VP5E4SGTKD7","created_at":"2026-05-22T00:02:27Z"},{"alias_kind":"pith_short_8","alias_value":"ND3G2VP5","created_at":"2026-05-22T00:02:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:ND3G2VP5E4SGTKD7PCXKTMRKMN","target":"record","payload":{"canonical_record":{"source":{"id":"2605.21510","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2026-05-13T10:38:31Z","cross_cats_sorted":["cs.LG"],"title_canon_sha256":"4e201249487b40f333e1b97b13e53c7b594cc57c739839985f18f593d708301b","abstract_canon_sha256":"b9c2b4ff04f8665c35cb3c8261725f6895a7a85d71a2acd296a66ef8bd236f52"},"schema_version":"1.0"},"canonical_sha256":"68f66d55fd272469a87f78aea9b22a63402063bcf33a48e1267414c3b2dc894b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-22T00:02:27.302434Z","signature_b64":"aNCpEyxaitTNYLtFF1h2YovzyerT2P72fxh4eDiaRs1797GBLQYiFGzYYQrb4zoS0GfSrmaP36+vvgtJzg9rCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"68f66d55fd272469a87f78aea9b22a63402063bcf33a48e1267414c3b2dc894b","last_reissued_at":"2026-05-22T00:02:27.302031Z","signature_status":"signed_v1","first_computed_at":"2026-05-22T00:02:27.302031Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.21510","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":"2026-05-22T00:02:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4wjoJf+B90OJ2m+gVUb/ARH22nX64wVEaMVd5P+e6OJGKAX2ajH51/RawCuk9hqueJOKFE/hlWKispINNJPMCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T08:44:29.568604Z"},"content_sha256":"df6af6bf7a0b3737f6108bc00e2879541e1843574809793c1eafccf0d355c0b3","schema_version":"1.0","event_id":"sha256:df6af6bf7a0b3737f6108bc00e2879541e1843574809793c1eafccf0d355c0b3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:ND3G2VP5E4SGTKD7PCXKTMRKMN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Community-Aware Vertex Ordering for Reference-Based Graph Compression: A Cross-Encoder Empirical Study","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.LG"],"primary_cat":"cs.SI","authors_text":"Jimmy Dubuisson","submitted_at":"2026-05-13T10:38:31Z","abstract_excerpt":"Reference-based graph compression encodes each vertex's neighbor list relative to a recent vertex, exploiting locality to compress large directed graphs. The dominant tool, WebGraph's BVGraph, fixes a single encoding pipeline and relies on a separately chosen vertex ordering -- typically URL-lexicographic or Layered Label Propagation (LLP). The interaction between ordering and encoder is rarely measured.\n  We propose a two-stage Leiden+LLP vertex ordering -- global LLP to seed labels, Leiden community detection, then per-cluster LLP on each induced subgraph -- and study how it interacts with r"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.21510","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/2605.21510/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":"2026-05-22T00:02:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hSTgZbWKRmroN9clL+aSUXh0zOS2aTR+uduCycjYHvPS1L+7SEIFk6F5iZHkFE9WCwABLuKLhyEDkiSFxQjQBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T08:44:29.569351Z"},"content_sha256":"8af49595e83bf0b8a6991afb22c9e07c6e13cd3cf4d81d2c2e789fa7308c2289","schema_version":"1.0","event_id":"sha256:8af49595e83bf0b8a6991afb22c9e07c6e13cd3cf4d81d2c2e789fa7308c2289"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ND3G2VP5E4SGTKD7PCXKTMRKMN/bundle.json","state_url":"https://pith.science/pith/ND3G2VP5E4SGTKD7PCXKTMRKMN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ND3G2VP5E4SGTKD7PCXKTMRKMN/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":"2026-05-26T08:44:29Z","links":{"resolver":"https://pith.science/pith/ND3G2VP5E4SGTKD7PCXKTMRKMN","bundle":"https://pith.science/pith/ND3G2VP5E4SGTKD7PCXKTMRKMN/bundle.json","state":"https://pith.science/pith/ND3G2VP5E4SGTKD7PCXKTMRKMN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ND3G2VP5E4SGTKD7PCXKTMRKMN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:ND3G2VP5E4SGTKD7PCXKTMRKMN","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":"b9c2b4ff04f8665c35cb3c8261725f6895a7a85d71a2acd296a66ef8bd236f52","cross_cats_sorted":["cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2026-05-13T10:38:31Z","title_canon_sha256":"4e201249487b40f333e1b97b13e53c7b594cc57c739839985f18f593d708301b"},"schema_version":"1.0","source":{"id":"2605.21510","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.21510","created_at":"2026-05-22T00:02:27Z"},{"alias_kind":"arxiv_version","alias_value":"2605.21510v1","created_at":"2026-05-22T00:02:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.21510","created_at":"2026-05-22T00:02:27Z"},{"alias_kind":"pith_short_12","alias_value":"ND3G2VP5E4SG","created_at":"2026-05-22T00:02:27Z"},{"alias_kind":"pith_short_16","alias_value":"ND3G2VP5E4SGTKD7","created_at":"2026-05-22T00:02:27Z"},{"alias_kind":"pith_short_8","alias_value":"ND3G2VP5","created_at":"2026-05-22T00:02:27Z"}],"graph_snapshots":[{"event_id":"sha256:8af49595e83bf0b8a6991afb22c9e07c6e13cd3cf4d81d2c2e789fa7308c2289","target":"graph","created_at":"2026-05-22T00:02:27Z","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/2605.21510/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Reference-based graph compression encodes each vertex's neighbor list relative to a recent vertex, exploiting locality to compress large directed graphs. The dominant tool, WebGraph's BVGraph, fixes a single encoding pipeline and relies on a separately chosen vertex ordering -- typically URL-lexicographic or Layered Label Propagation (LLP). The interaction between ordering and encoder is rarely measured.\n  We propose a two-stage Leiden+LLP vertex ordering -- global LLP to seed labels, Leiden community detection, then per-cluster LLP on each induced subgraph -- and study how it interacts with r","authors_text":"Jimmy Dubuisson","cross_cats":["cs.LG"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2026-05-13T10:38:31Z","title":"Community-Aware Vertex Ordering for Reference-Based Graph Compression: A Cross-Encoder Empirical Study"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.21510","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:df6af6bf7a0b3737f6108bc00e2879541e1843574809793c1eafccf0d355c0b3","target":"record","created_at":"2026-05-22T00:02:27Z","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":"b9c2b4ff04f8665c35cb3c8261725f6895a7a85d71a2acd296a66ef8bd236f52","cross_cats_sorted":["cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2026-05-13T10:38:31Z","title_canon_sha256":"4e201249487b40f333e1b97b13e53c7b594cc57c739839985f18f593d708301b"},"schema_version":"1.0","source":{"id":"2605.21510","kind":"arxiv","version":1}},"canonical_sha256":"68f66d55fd272469a87f78aea9b22a63402063bcf33a48e1267414c3b2dc894b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"68f66d55fd272469a87f78aea9b22a63402063bcf33a48e1267414c3b2dc894b","first_computed_at":"2026-05-22T00:02:27.302031Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-22T00:02:27.302031Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"aNCpEyxaitTNYLtFF1h2YovzyerT2P72fxh4eDiaRs1797GBLQYiFGzYYQrb4zoS0GfSrmaP36+vvgtJzg9rCA==","signature_status":"signed_v1","signed_at":"2026-05-22T00:02:27.302434Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.21510","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:df6af6bf7a0b3737f6108bc00e2879541e1843574809793c1eafccf0d355c0b3","sha256:8af49595e83bf0b8a6991afb22c9e07c6e13cd3cf4d81d2c2e789fa7308c2289"],"state_sha256":"cdbd0dcd13ed37ccac0d5dd63cb4f77c180e0980266d1ff07c88e6428553f257"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Vh0oQQXMg9YnzShZVwfvi99sCs9E8h3Q3EBiSEy+uPxC1S1DTByo3zMtXwtrHmtww/RheVBFZr3JkAAg0MvYBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T08:44:29.572821Z","bundle_sha256":"65b471d3387c26f00629ec060d6380ea16eb2db516ac2df5a599dd85c68fa5f0"}}