{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:ZLKMHVJQ44B3LE5PIYHZEKTGWM","short_pith_number":"pith:ZLKMHVJQ","canonical_record":{"source":{"id":"1903.09522","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2019-03-22T14:19:04Z","cross_cats_sorted":[],"title_canon_sha256":"521b18479804cf235f1fb347b7afa3869284364d3f3e0c42a722dc4fa8d7e9fc","abstract_canon_sha256":"94f9b2796e260a762afd2f8a006386405558ac55ee5bba2bd0f0867adafc3883"},"schema_version":"1.0"},"canonical_sha256":"cad4c3d530e703b593af460f922a66b33bad5d9b78383d1c0f9fc98586ff052d","source":{"kind":"arxiv","id":"1903.09522","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.09522","created_at":"2026-05-17T23:50:39Z"},{"alias_kind":"arxiv_version","alias_value":"1903.09522v1","created_at":"2026-05-17T23:50:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.09522","created_at":"2026-05-17T23:50:39Z"},{"alias_kind":"pith_short_12","alias_value":"ZLKMHVJQ44B3","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"ZLKMHVJQ44B3LE5P","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"ZLKMHVJQ","created_at":"2026-05-18T12:33:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:ZLKMHVJQ44B3LE5PIYHZEKTGWM","target":"record","payload":{"canonical_record":{"source":{"id":"1903.09522","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2019-03-22T14:19:04Z","cross_cats_sorted":[],"title_canon_sha256":"521b18479804cf235f1fb347b7afa3869284364d3f3e0c42a722dc4fa8d7e9fc","abstract_canon_sha256":"94f9b2796e260a762afd2f8a006386405558ac55ee5bba2bd0f0867adafc3883"},"schema_version":"1.0"},"canonical_sha256":"cad4c3d530e703b593af460f922a66b33bad5d9b78383d1c0f9fc98586ff052d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:50:39.400017Z","signature_b64":"FTjF+aE2FvL7abzL3Oko6TdfJ38mvcM05Y7ZJJEo/cMa3lYwAHTrdtqQbCvJTbzsNDrZGTwPuddeo3l/zeE9CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cad4c3d530e703b593af460f922a66b33bad5d9b78383d1c0f9fc98586ff052d","last_reissued_at":"2026-05-17T23:50:39.399431Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:50:39.399431Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1903.09522","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":"2026-05-17T23:50:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WmIstJvoAzCTshdusaGKom+TNmGaPwLkU7gayfa7H1TefJacsd1luFz34ApBWXT7QuQ491DbRfCQIQ7zThyZAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T21:05:44.912856Z"},"content_sha256":"e8422a2155c7c7aaf39660cca0fe9dc41c9d3ed5ddd62079ee4353d21a6d2f08","schema_version":"1.0","event_id":"sha256:e8422a2155c7c7aaf39660cca0fe9dc41c9d3ed5ddd62079ee4353d21a6d2f08"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:ZLKMHVJQ44B3LE5PIYHZEKTGWM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An empirical assessment of best-answer prediction models in technical Q&A sites","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.SE","authors_text":"Fabio Calefato, Filippo Lanubile, Nicole Novielli","submitted_at":"2019-03-22T14:19:04Z","abstract_excerpt":"Technical Q&A sites have become essential for software engineers as they constantly seek help from other experts to solve their work problems. Despite their success, many questions remain unresolved, sometimes because the asker does not acknowledge any helpful answer. In these cases, an information seeker can only browse all the answers within a question thread to assess their quality as potential solutions. We approach this time-consuming problem as a binary-classification task where a best-answer prediction model is built to identify the accepted answer among those within a resolved question"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.09522","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":""},"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":"2026-05-17T23:50:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kXG+GYO4trW28vqFCgZpGBQT+nbqgWPYSdBRZPFy8Vq8kOn55lDCt6+Ko/rUYQRiPelKPcGhGLDeObAC009uAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T21:05:44.913521Z"},"content_sha256":"4703a36b167bd1a36475a657cd1b34fe7d31f2a37e02028765d35821ca0ecc14","schema_version":"1.0","event_id":"sha256:4703a36b167bd1a36475a657cd1b34fe7d31f2a37e02028765d35821ca0ecc14"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZLKMHVJQ44B3LE5PIYHZEKTGWM/bundle.json","state_url":"https://pith.science/pith/ZLKMHVJQ44B3LE5PIYHZEKTGWM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZLKMHVJQ44B3LE5PIYHZEKTGWM/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":"2026-05-28T21:05:44Z","links":{"resolver":"https://pith.science/pith/ZLKMHVJQ44B3LE5PIYHZEKTGWM","bundle":"https://pith.science/pith/ZLKMHVJQ44B3LE5PIYHZEKTGWM/bundle.json","state":"https://pith.science/pith/ZLKMHVJQ44B3LE5PIYHZEKTGWM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZLKMHVJQ44B3LE5PIYHZEKTGWM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:ZLKMHVJQ44B3LE5PIYHZEKTGWM","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":"94f9b2796e260a762afd2f8a006386405558ac55ee5bba2bd0f0867adafc3883","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2019-03-22T14:19:04Z","title_canon_sha256":"521b18479804cf235f1fb347b7afa3869284364d3f3e0c42a722dc4fa8d7e9fc"},"schema_version":"1.0","source":{"id":"1903.09522","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.09522","created_at":"2026-05-17T23:50:39Z"},{"alias_kind":"arxiv_version","alias_value":"1903.09522v1","created_at":"2026-05-17T23:50:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.09522","created_at":"2026-05-17T23:50:39Z"},{"alias_kind":"pith_short_12","alias_value":"ZLKMHVJQ44B3","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"ZLKMHVJQ44B3LE5P","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"ZLKMHVJQ","created_at":"2026-05-18T12:33:33Z"}],"graph_snapshots":[{"event_id":"sha256:4703a36b167bd1a36475a657cd1b34fe7d31f2a37e02028765d35821ca0ecc14","target":"graph","created_at":"2026-05-17T23:50:39Z","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":"Technical Q&A sites have become essential for software engineers as they constantly seek help from other experts to solve their work problems. Despite their success, many questions remain unresolved, sometimes because the asker does not acknowledge any helpful answer. In these cases, an information seeker can only browse all the answers within a question thread to assess their quality as potential solutions. We approach this time-consuming problem as a binary-classification task where a best-answer prediction model is built to identify the accepted answer among those within a resolved question","authors_text":"Fabio Calefato, Filippo Lanubile, Nicole Novielli","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2019-03-22T14:19:04Z","title":"An empirical assessment of best-answer prediction models in technical Q&A sites"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.09522","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:e8422a2155c7c7aaf39660cca0fe9dc41c9d3ed5ddd62079ee4353d21a6d2f08","target":"record","created_at":"2026-05-17T23:50:39Z","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":"94f9b2796e260a762afd2f8a006386405558ac55ee5bba2bd0f0867adafc3883","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2019-03-22T14:19:04Z","title_canon_sha256":"521b18479804cf235f1fb347b7afa3869284364d3f3e0c42a722dc4fa8d7e9fc"},"schema_version":"1.0","source":{"id":"1903.09522","kind":"arxiv","version":1}},"canonical_sha256":"cad4c3d530e703b593af460f922a66b33bad5d9b78383d1c0f9fc98586ff052d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cad4c3d530e703b593af460f922a66b33bad5d9b78383d1c0f9fc98586ff052d","first_computed_at":"2026-05-17T23:50:39.399431Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:50:39.399431Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FTjF+aE2FvL7abzL3Oko6TdfJ38mvcM05Y7ZJJEo/cMa3lYwAHTrdtqQbCvJTbzsNDrZGTwPuddeo3l/zeE9CA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:50:39.400017Z","signed_message":"canonical_sha256_bytes"},"source_id":"1903.09522","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e8422a2155c7c7aaf39660cca0fe9dc41c9d3ed5ddd62079ee4353d21a6d2f08","sha256:4703a36b167bd1a36475a657cd1b34fe7d31f2a37e02028765d35821ca0ecc14"],"state_sha256":"95d8bb58582ea20afecf503f4a9d350e95fb5f10d72ce07a9f4185e7e41ccd6f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SdLIudB1vtPfkp+A5j//g6SsXdI6ok45U3cokTZ5T+87423NRaIBNFTIjfbRaUsjq5Kxxc7KWJQiRjbZrOHyAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T21:05:44.917461Z","bundle_sha256":"8cbdab112764f1ccb76c33a861007698ad53da704c975ba8567a89ab28eec0bc"}}