{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:UZ3QEEQE2XH6ASUFOMYC5QGGMB","short_pith_number":"pith:UZ3QEEQE","canonical_record":{"source":{"id":"1702.07735","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2017-02-24T19:15:31Z","cross_cats_sorted":[],"title_canon_sha256":"c499b7b43181e7ec1f8e1e3cf39adf829edf9aeefeb33420da476c3123770fc9","abstract_canon_sha256":"3dd7875ea2bd56465d65b7c6bb52e687246dd16e08728e0bcec8e464a2b7a640"},"schema_version":"1.0"},"canonical_sha256":"a677021204d5cfe04a8573302ec0c6604cc9be808735ba58d33c618376174966","source":{"kind":"arxiv","id":"1702.07735","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1702.07735","created_at":"2026-05-18T00:47:19Z"},{"alias_kind":"arxiv_version","alias_value":"1702.07735v2","created_at":"2026-05-18T00:47:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.07735","created_at":"2026-05-18T00:47:19Z"},{"alias_kind":"pith_short_12","alias_value":"UZ3QEEQE2XH6","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"UZ3QEEQE2XH6ASUF","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"UZ3QEEQE","created_at":"2026-05-18T12:31:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:UZ3QEEQE2XH6ASUFOMYC5QGGMB","target":"record","payload":{"canonical_record":{"source":{"id":"1702.07735","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2017-02-24T19:15:31Z","cross_cats_sorted":[],"title_canon_sha256":"c499b7b43181e7ec1f8e1e3cf39adf829edf9aeefeb33420da476c3123770fc9","abstract_canon_sha256":"3dd7875ea2bd56465d65b7c6bb52e687246dd16e08728e0bcec8e464a2b7a640"},"schema_version":"1.0"},"canonical_sha256":"a677021204d5cfe04a8573302ec0c6604cc9be808735ba58d33c618376174966","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:47:19.705053Z","signature_b64":"GbiLck1WTboy+2jtdzIjE0YVKew4U3DZii8dcCEQ7kpesUbkyVsy02kJW1psoUWEtI1/vcXgAKt1aF5ZvdR7Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a677021204d5cfe04a8573302ec0c6604cc9be808735ba58d33c618376174966","last_reissued_at":"2026-05-18T00:47:19.704466Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:47:19.704466Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1702.07735","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":"2026-05-18T00:47:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9yU41z+Nw6HPEjb+C6krg8Nv60xrqG3M3VJgYEBcaGNLkDxengjNknWHqkNOkJNAU7fIzxpRxw1TYiXsXo+4Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T08:17:08.964706Z"},"content_sha256":"3381fe55f1ccf0054541cae3ed10b8c56357cbf1fbb0512ad3bdcdd41b099f90","schema_version":"1.0","event_id":"sha256:3381fe55f1ccf0054541cae3ed10b8c56357cbf1fbb0512ad3bdcdd41b099f90"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:UZ3QEEQE2XH6ASUFOMYC5QGGMB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Better Predictors for Issue Lifetime","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.SE","authors_text":"Matthew Martin, Mitch Rees-Jones, Tim Menzies","submitted_at":"2017-02-24T19:15:31Z","abstract_excerpt":"Predicting issue lifetime can help software developers, managers, and stakeholders effectively prioritize work, allocate development resources, and better understand project timelines. Progress had been made on this prediction problem, but prior work has reported low precision and high false alarms. The latest results also use complex models such as random forests that detract from their readability.\n  We solve both issues by using small, readable decision trees (under 20 lines long) and correlation feature selection to predict issue lifetime, achieving high precision and low false alarms (med"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.07735","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":"2026-05-18T00:47:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"D/NXi57WVzgDDWXeHu2RwzkxkR6Estp6hidCXwsjshCxPKBci1iGV/LUxOjk24oN2zXP3HHyKGlUboGZww5hAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T08:17:08.965055Z"},"content_sha256":"babf7f73b90d5976729050ee9cb578f8b6c902994555aeba74723d146154f39c","schema_version":"1.0","event_id":"sha256:babf7f73b90d5976729050ee9cb578f8b6c902994555aeba74723d146154f39c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UZ3QEEQE2XH6ASUFOMYC5QGGMB/bundle.json","state_url":"https://pith.science/pith/UZ3QEEQE2XH6ASUFOMYC5QGGMB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UZ3QEEQE2XH6ASUFOMYC5QGGMB/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":"2026-06-12T08:17:08Z","links":{"resolver":"https://pith.science/pith/UZ3QEEQE2XH6ASUFOMYC5QGGMB","bundle":"https://pith.science/pith/UZ3QEEQE2XH6ASUFOMYC5QGGMB/bundle.json","state":"https://pith.science/pith/UZ3QEEQE2XH6ASUFOMYC5QGGMB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UZ3QEEQE2XH6ASUFOMYC5QGGMB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:UZ3QEEQE2XH6ASUFOMYC5QGGMB","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":"3dd7875ea2bd56465d65b7c6bb52e687246dd16e08728e0bcec8e464a2b7a640","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2017-02-24T19:15:31Z","title_canon_sha256":"c499b7b43181e7ec1f8e1e3cf39adf829edf9aeefeb33420da476c3123770fc9"},"schema_version":"1.0","source":{"id":"1702.07735","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1702.07735","created_at":"2026-05-18T00:47:19Z"},{"alias_kind":"arxiv_version","alias_value":"1702.07735v2","created_at":"2026-05-18T00:47:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.07735","created_at":"2026-05-18T00:47:19Z"},{"alias_kind":"pith_short_12","alias_value":"UZ3QEEQE2XH6","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"UZ3QEEQE2XH6ASUF","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"UZ3QEEQE","created_at":"2026-05-18T12:31:49Z"}],"graph_snapshots":[{"event_id":"sha256:babf7f73b90d5976729050ee9cb578f8b6c902994555aeba74723d146154f39c","target":"graph","created_at":"2026-05-18T00:47:19Z","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":"Predicting issue lifetime can help software developers, managers, and stakeholders effectively prioritize work, allocate development resources, and better understand project timelines. Progress had been made on this prediction problem, but prior work has reported low precision and high false alarms. The latest results also use complex models such as random forests that detract from their readability.\n  We solve both issues by using small, readable decision trees (under 20 lines long) and correlation feature selection to predict issue lifetime, achieving high precision and low false alarms (med","authors_text":"Matthew Martin, Mitch Rees-Jones, Tim Menzies","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2017-02-24T19:15:31Z","title":"Better Predictors for Issue Lifetime"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.07735","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":"sha256:3381fe55f1ccf0054541cae3ed10b8c56357cbf1fbb0512ad3bdcdd41b099f90","target":"record","created_at":"2026-05-18T00:47:19Z","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":"3dd7875ea2bd56465d65b7c6bb52e687246dd16e08728e0bcec8e464a2b7a640","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2017-02-24T19:15:31Z","title_canon_sha256":"c499b7b43181e7ec1f8e1e3cf39adf829edf9aeefeb33420da476c3123770fc9"},"schema_version":"1.0","source":{"id":"1702.07735","kind":"arxiv","version":2}},"canonical_sha256":"a677021204d5cfe04a8573302ec0c6604cc9be808735ba58d33c618376174966","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a677021204d5cfe04a8573302ec0c6604cc9be808735ba58d33c618376174966","first_computed_at":"2026-05-18T00:47:19.704466Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:47:19.704466Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GbiLck1WTboy+2jtdzIjE0YVKew4U3DZii8dcCEQ7kpesUbkyVsy02kJW1psoUWEtI1/vcXgAKt1aF5ZvdR7Dw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:47:19.705053Z","signed_message":"canonical_sha256_bytes"},"source_id":"1702.07735","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3381fe55f1ccf0054541cae3ed10b8c56357cbf1fbb0512ad3bdcdd41b099f90","sha256:babf7f73b90d5976729050ee9cb578f8b6c902994555aeba74723d146154f39c"],"state_sha256":"afcfe37cfff67a46b6d78bb5e9a7ca8e8b0c9ae0e56c3bf63b9f52ae6c9105fd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+ZrzvCYLnrhQRV3c1mpZJciQpFVq78E0gPPKIwHsKHjWAt/Qe73sHVwyQENoUfnj1DMJrda/WKB4mjD9S4WLCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-12T08:17:08.966968Z","bundle_sha256":"56ec193ba2a2c7ac49a5797ab07a08013ec0e7cbf5481db8960e291d66505f2a"}}