{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:I2DIA2MDELH7WUP2A6CUYWUFA2","short_pith_number":"pith:I2DIA2MD","canonical_record":{"source":{"id":"2008.03053","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2020-08-07T09:19:50Z","cross_cats_sorted":[],"title_canon_sha256":"4e331cc7c78074a97dd03f27d34bd36970284be143bcfe74d1c2d4486853b0df","abstract_canon_sha256":"61f00d3532ac7abdd6a1d6bb1994c739afa8572685381ece6fbb24aae59a05ed"},"schema_version":"1.0"},"canonical_sha256":"468680698322cffb51fa07854c5a850682e4d591811609edb657b4a9704d0ead","source":{"kind":"arxiv","id":"2008.03053","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.03053","created_at":"2026-07-05T03:22:32Z"},{"alias_kind":"arxiv_version","alias_value":"2008.03053v2","created_at":"2026-07-05T03:22:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.03053","created_at":"2026-07-05T03:22:32Z"},{"alias_kind":"pith_short_12","alias_value":"I2DIA2MDELH7","created_at":"2026-07-05T03:22:32Z"},{"alias_kind":"pith_short_16","alias_value":"I2DIA2MDELH7WUP2","created_at":"2026-07-05T03:22:32Z"},{"alias_kind":"pith_short_8","alias_value":"I2DIA2MD","created_at":"2026-07-05T03:22:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:I2DIA2MDELH7WUP2A6CUYWUFA2","target":"record","payload":{"canonical_record":{"source":{"id":"2008.03053","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2020-08-07T09:19:50Z","cross_cats_sorted":[],"title_canon_sha256":"4e331cc7c78074a97dd03f27d34bd36970284be143bcfe74d1c2d4486853b0df","abstract_canon_sha256":"61f00d3532ac7abdd6a1d6bb1994c739afa8572685381ece6fbb24aae59a05ed"},"schema_version":"1.0"},"canonical_sha256":"468680698322cffb51fa07854c5a850682e4d591811609edb657b4a9704d0ead","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:22:32.631107Z","signature_b64":"Z7FwPdBeBPb0jWCZwg4Em9/3OhmwJOtcv7JUyr/PwJ9nKO2KMB2oFgoUOOUQDShWols1DPf1oxWXY3IFU4waCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"468680698322cffb51fa07854c5a850682e4d591811609edb657b4a9704d0ead","last_reissued_at":"2026-07-05T03:22:32.630702Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:22:32.630702Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2008.03053","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":"2026-07-05T03:22:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VKd3TQ6HiczOCs/cNkJjMewbe9+k5uACyKsPUJ3ZGHWB/aEr1BMciN+knN71ZmWfl/GrwUb52IPL6LNF2d+xAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T00:11:53.771154Z"},"content_sha256":"f53e6989da0b1408b533eb814183ec0d4f3dff5a5f827f2f539104d86bceaf26","schema_version":"1.0","event_id":"sha256:f53e6989da0b1408b533eb814183ec0d4f3dff5a5f827f2f539104d86bceaf26"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:I2DIA2MDELH7WUP2A6CUYWUFA2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Efficient and Optimal Algorithms for Tree Summarization with Weighted Terminologies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.DB","authors_text":"Byron Choi, Jianliang Xu, Jiming Liu, William K. Cheung, Xin Huang, Xuliang Zhu, Yanchun Zhang","submitted_at":"2020-08-07T09:19:50Z","abstract_excerpt":"Data summarization that presents a small subset of a dataset to users has been widely applied in numerous applications and systems. Many datasets are coded with hierarchical terminologies, e.g., the international classification of Diseases-9, Medical Subject Heading, and Gene Ontology, to name a few. In this paper, we study the problem of selecting a diverse set of k elements to summarize an input dataset with hierarchical terminologies, and visualize the summary in an ontology structure. We propose an efficient greedy algorithm to solve the problem with (1-1/e) = 62% -approximation guarantee."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.03053","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2008.03053/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":"2026-07-05T03:22:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2Pvj2edr680NQjsu/fCJs8fpZC7NoScOaxUjFX+QLMGtnVthoPWeJng0Sqq11mRcEtQpXcnncl3IfXD71qjfDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T00:11:53.771687Z"},"content_sha256":"bdb3aeb1c421fc709b4dbed03174562d069248c4639aab368bce47f1048017c6","schema_version":"1.0","event_id":"sha256:bdb3aeb1c421fc709b4dbed03174562d069248c4639aab368bce47f1048017c6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/I2DIA2MDELH7WUP2A6CUYWUFA2/bundle.json","state_url":"https://pith.science/pith/I2DIA2MDELH7WUP2A6CUYWUFA2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/I2DIA2MDELH7WUP2A6CUYWUFA2/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":"2026-08-05T00:11:53Z","links":{"resolver":"https://pith.science/pith/I2DIA2MDELH7WUP2A6CUYWUFA2","bundle":"https://pith.science/pith/I2DIA2MDELH7WUP2A6CUYWUFA2/bundle.json","state":"https://pith.science/pith/I2DIA2MDELH7WUP2A6CUYWUFA2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/I2DIA2MDELH7WUP2A6CUYWUFA2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:I2DIA2MDELH7WUP2A6CUYWUFA2","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":"61f00d3532ac7abdd6a1d6bb1994c739afa8572685381ece6fbb24aae59a05ed","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2020-08-07T09:19:50Z","title_canon_sha256":"4e331cc7c78074a97dd03f27d34bd36970284be143bcfe74d1c2d4486853b0df"},"schema_version":"1.0","source":{"id":"2008.03053","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.03053","created_at":"2026-07-05T03:22:32Z"},{"alias_kind":"arxiv_version","alias_value":"2008.03053v2","created_at":"2026-07-05T03:22:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.03053","created_at":"2026-07-05T03:22:32Z"},{"alias_kind":"pith_short_12","alias_value":"I2DIA2MDELH7","created_at":"2026-07-05T03:22:32Z"},{"alias_kind":"pith_short_16","alias_value":"I2DIA2MDELH7WUP2","created_at":"2026-07-05T03:22:32Z"},{"alias_kind":"pith_short_8","alias_value":"I2DIA2MD","created_at":"2026-07-05T03:22:32Z"}],"graph_snapshots":[{"event_id":"sha256:bdb3aeb1c421fc709b4dbed03174562d069248c4639aab368bce47f1048017c6","target":"graph","created_at":"2026-07-05T03:22:32Z","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/2008.03053/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Data summarization that presents a small subset of a dataset to users has been widely applied in numerous applications and systems. Many datasets are coded with hierarchical terminologies, e.g., the international classification of Diseases-9, Medical Subject Heading, and Gene Ontology, to name a few. In this paper, we study the problem of selecting a diverse set of k elements to summarize an input dataset with hierarchical terminologies, and visualize the summary in an ontology structure. We propose an efficient greedy algorithm to solve the problem with (1-1/e) = 62% -approximation guarantee.","authors_text":"Byron Choi, Jianliang Xu, Jiming Liu, William K. Cheung, Xin Huang, Xuliang Zhu, Yanchun Zhang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2020-08-07T09:19:50Z","title":"Efficient and Optimal Algorithms for Tree Summarization with Weighted Terminologies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.03053","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:f53e6989da0b1408b533eb814183ec0d4f3dff5a5f827f2f539104d86bceaf26","target":"record","created_at":"2026-07-05T03:22:32Z","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":"61f00d3532ac7abdd6a1d6bb1994c739afa8572685381ece6fbb24aae59a05ed","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2020-08-07T09:19:50Z","title_canon_sha256":"4e331cc7c78074a97dd03f27d34bd36970284be143bcfe74d1c2d4486853b0df"},"schema_version":"1.0","source":{"id":"2008.03053","kind":"arxiv","version":2}},"canonical_sha256":"468680698322cffb51fa07854c5a850682e4d591811609edb657b4a9704d0ead","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"468680698322cffb51fa07854c5a850682e4d591811609edb657b4a9704d0ead","first_computed_at":"2026-07-05T03:22:32.630702Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:22:32.630702Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Z7FwPdBeBPb0jWCZwg4Em9/3OhmwJOtcv7JUyr/PwJ9nKO2KMB2oFgoUOOUQDShWols1DPf1oxWXY3IFU4waCA==","signature_status":"signed_v1","signed_at":"2026-07-05T03:22:32.631107Z","signed_message":"canonical_sha256_bytes"},"source_id":"2008.03053","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f53e6989da0b1408b533eb814183ec0d4f3dff5a5f827f2f539104d86bceaf26","sha256:bdb3aeb1c421fc709b4dbed03174562d069248c4639aab368bce47f1048017c6"],"state_sha256":"ed457620263d662cb20c43d89bbcdb6c729664f96dbbdb43ebd57a3a7de2b67a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AMs9CwGXM3deED2glT57dG5OIAJkTOKRRbeHPbWurBlCFzdXKDSXlC2NIQg95bnzxNzh9Jccf9c+VGsuEVKrAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T00:11:53.775060Z","bundle_sha256":"ef7df687c2f1a46b0300bfc0f34f93c2d610303b6de0cfa18c8d5a90cbed707b"}}