{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:XTW4LZTXCMEJ3FUCJDWAAODNTT","short_pith_number":"pith:XTW4LZTX","canonical_record":{"source":{"id":"1307.2696","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DS","submitted_at":"2013-07-10T06:52:19Z","cross_cats_sorted":[],"title_canon_sha256":"92204cd4a83fbcde44e3a784101cfc908d062485b2c87da0cce0e82537546711","abstract_canon_sha256":"17b3142a8c0e678e728d0ddbf2786593f5833ab9544ba9670a6c34cc79bdde3b"},"schema_version":"1.0"},"canonical_sha256":"bcedc5e67713089d968248ec00386d9cde6b9768848bb74fa043171c7d6ffd3d","source":{"kind":"arxiv","id":"1307.2696","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.2696","created_at":"2026-05-18T03:18:41Z"},{"alias_kind":"arxiv_version","alias_value":"1307.2696v2","created_at":"2026-05-18T03:18:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.2696","created_at":"2026-05-18T03:18:41Z"},{"alias_kind":"pith_short_12","alias_value":"XTW4LZTXCMEJ","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_16","alias_value":"XTW4LZTXCMEJ3FUC","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_8","alias_value":"XTW4LZTX","created_at":"2026-05-18T12:28:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:XTW4LZTXCMEJ3FUCJDWAAODNTT","target":"record","payload":{"canonical_record":{"source":{"id":"1307.2696","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DS","submitted_at":"2013-07-10T06:52:19Z","cross_cats_sorted":[],"title_canon_sha256":"92204cd4a83fbcde44e3a784101cfc908d062485b2c87da0cce0e82537546711","abstract_canon_sha256":"17b3142a8c0e678e728d0ddbf2786593f5833ab9544ba9670a6c34cc79bdde3b"},"schema_version":"1.0"},"canonical_sha256":"bcedc5e67713089d968248ec00386d9cde6b9768848bb74fa043171c7d6ffd3d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:18:41.930847Z","signature_b64":"rP/lAanlRc9PhbmkstKlsszVjh9+l+NnKAlRL/J2GLYTq/1cNrZt9qPNR6YxhJtI3Xz9nbjEFHW1+dCI+2ySDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bcedc5e67713089d968248ec00386d9cde6b9768848bb74fa043171c7d6ffd3d","last_reissued_at":"2026-05-18T03:18:41.930290Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:18:41.930290Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1307.2696","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:18:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"A37DJCO/rqxUcodB+Q9VKroQ+P2n2b4yL7J8QTmPVQkHZqKw6EMfTAgzFHPjjoZkY2Bmz8Wu9HiblidI7getCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T09:09:04.175824Z"},"content_sha256":"514b7788c92ccea2704895e2ecb47284fdf3e2136da8393e1bdf7a2580e44cfc","schema_version":"1.0","event_id":"sha256:514b7788c92ccea2704895e2ecb47284fdf3e2136da8393e1bdf7a2580e44cfc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:XTW4LZTXCMEJ3FUCJDWAAODNTT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ranking on Arbitrary Graphs: Rematch via Continuous LP with Monotone and Boundary Condition Constraints","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.DS","authors_text":"Fei Chen, T-H. Hubert Chan, Xiaowei Wu, Zhichao Zhao","submitted_at":"2013-07-10T06:52:19Z","abstract_excerpt":"Motivated by online advertisement and exchange settings, greedy randomized algorithms for the maximum matching problem have been studied, in which the algorithm makes (random) decisions that are essentially oblivious to the input graph. Any greedy algorithm can achieve performance ratio 0.5, which is the expected number of matched nodes to the number of nodes in a maximum matching.\n  Since Aronson, Dyer, Frieze and Suen proved that the Modified Randomized Greedy (MRG) algorithm achieves performance ratio 0.5 + \\epsilon (where \\epsilon = frac{1}{400000}) on arbitrary graphs in the mid-nineties,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.2696","kind":"arxiv","version":2},"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":"2026-05-18T03:18:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a0T4DJbIvG2s4/o5Ld2Yocfpc2pZ/pJT7w8OSKhI93eivYFQ+VZyq8DgbzJBZNMYsTms25N/+3GxqTH71p75Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T09:09:04.176478Z"},"content_sha256":"d058d49d8c7b96c2404b55a39088e51789bd57273cdc8ae0fe3434fb5b6850e7","schema_version":"1.0","event_id":"sha256:d058d49d8c7b96c2404b55a39088e51789bd57273cdc8ae0fe3434fb5b6850e7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XTW4LZTXCMEJ3FUCJDWAAODNTT/bundle.json","state_url":"https://pith.science/pith/XTW4LZTXCMEJ3FUCJDWAAODNTT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XTW4LZTXCMEJ3FUCJDWAAODNTT/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":"2026-05-27T09:09:04Z","links":{"resolver":"https://pith.science/pith/XTW4LZTXCMEJ3FUCJDWAAODNTT","bundle":"https://pith.science/pith/XTW4LZTXCMEJ3FUCJDWAAODNTT/bundle.json","state":"https://pith.science/pith/XTW4LZTXCMEJ3FUCJDWAAODNTT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XTW4LZTXCMEJ3FUCJDWAAODNTT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:XTW4LZTXCMEJ3FUCJDWAAODNTT","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":"17b3142a8c0e678e728d0ddbf2786593f5833ab9544ba9670a6c34cc79bdde3b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DS","submitted_at":"2013-07-10T06:52:19Z","title_canon_sha256":"92204cd4a83fbcde44e3a784101cfc908d062485b2c87da0cce0e82537546711"},"schema_version":"1.0","source":{"id":"1307.2696","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.2696","created_at":"2026-05-18T03:18:41Z"},{"alias_kind":"arxiv_version","alias_value":"1307.2696v2","created_at":"2026-05-18T03:18:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.2696","created_at":"2026-05-18T03:18:41Z"},{"alias_kind":"pith_short_12","alias_value":"XTW4LZTXCMEJ","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_16","alias_value":"XTW4LZTXCMEJ3FUC","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_8","alias_value":"XTW4LZTX","created_at":"2026-05-18T12:28:06Z"}],"graph_snapshots":[{"event_id":"sha256:d058d49d8c7b96c2404b55a39088e51789bd57273cdc8ae0fe3434fb5b6850e7","target":"graph","created_at":"2026-05-18T03:18:41Z","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":"Motivated by online advertisement and exchange settings, greedy randomized algorithms for the maximum matching problem have been studied, in which the algorithm makes (random) decisions that are essentially oblivious to the input graph. Any greedy algorithm can achieve performance ratio 0.5, which is the expected number of matched nodes to the number of nodes in a maximum matching.\n  Since Aronson, Dyer, Frieze and Suen proved that the Modified Randomized Greedy (MRG) algorithm achieves performance ratio 0.5 + \\epsilon (where \\epsilon = frac{1}{400000}) on arbitrary graphs in the mid-nineties,","authors_text":"Fei Chen, T-H. Hubert Chan, Xiaowei Wu, Zhichao Zhao","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DS","submitted_at":"2013-07-10T06:52:19Z","title":"Ranking on Arbitrary Graphs: Rematch via Continuous LP with Monotone and Boundary Condition Constraints"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.2696","kind":"arxiv","version":2},"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":"sha256:514b7788c92ccea2704895e2ecb47284fdf3e2136da8393e1bdf7a2580e44cfc","target":"record","created_at":"2026-05-18T03:18:41Z","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":"17b3142a8c0e678e728d0ddbf2786593f5833ab9544ba9670a6c34cc79bdde3b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DS","submitted_at":"2013-07-10T06:52:19Z","title_canon_sha256":"92204cd4a83fbcde44e3a784101cfc908d062485b2c87da0cce0e82537546711"},"schema_version":"1.0","source":{"id":"1307.2696","kind":"arxiv","version":2}},"canonical_sha256":"bcedc5e67713089d968248ec00386d9cde6b9768848bb74fa043171c7d6ffd3d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bcedc5e67713089d968248ec00386d9cde6b9768848bb74fa043171c7d6ffd3d","first_computed_at":"2026-05-18T03:18:41.930290Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:18:41.930290Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rP/lAanlRc9PhbmkstKlsszVjh9+l+NnKAlRL/J2GLYTq/1cNrZt9qPNR6YxhJtI3Xz9nbjEFHW1+dCI+2ySDA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:18:41.930847Z","signed_message":"canonical_sha256_bytes"},"source_id":"1307.2696","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:514b7788c92ccea2704895e2ecb47284fdf3e2136da8393e1bdf7a2580e44cfc","sha256:d058d49d8c7b96c2404b55a39088e51789bd57273cdc8ae0fe3434fb5b6850e7"],"state_sha256":"19c544399ef17516aa2b0c3762595ef1e0a679c3e699c46ddb078c9d7143ed18"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2dQlCivFjiG28X7xPLmLNqxS74oy5exQGvyUEO8E7Bp0a6PcJsuBBEWe3381dfOux8d4ikqdfKeoNafwCNgLBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T09:09:04.179720Z","bundle_sha256":"707c79fde2c338079533ba2c5c7a8600ba8b69bcde1f3c8f308102029c6312e6"}}