{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:AG3TCNW3L3LDQGR2KUJRCQEPOP","short_pith_number":"pith:AG3TCNW3","canonical_record":{"source":{"id":"1304.2865","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2013-04-10T07:32:31Z","cross_cats_sorted":["cs.LG","stat.ML"],"title_canon_sha256":"412944093b8d7c560544f7865134ef0d4da6095e3eef7da0a57989b82c379bec","abstract_canon_sha256":"7b72a3db37093752c48a1d4df7c25bc5eab02364aada9637ad98d3e36b63a859"},"schema_version":"1.0"},"canonical_sha256":"01b73136db5ed6381a3a551311408f73fa9a6b020705fe10d647bd690aa30450","source":{"kind":"arxiv","id":"1304.2865","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.2865","created_at":"2026-05-18T03:28:28Z"},{"alias_kind":"arxiv_version","alias_value":"1304.2865v1","created_at":"2026-05-18T03:28:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.2865","created_at":"2026-05-18T03:28:28Z"},{"alias_kind":"pith_short_12","alias_value":"AG3TCNW3L3LD","created_at":"2026-05-18T12:27:38Z"},{"alias_kind":"pith_short_16","alias_value":"AG3TCNW3L3LDQGR2","created_at":"2026-05-18T12:27:38Z"},{"alias_kind":"pith_short_8","alias_value":"AG3TCNW3","created_at":"2026-05-18T12:27:38Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:AG3TCNW3L3LDQGR2KUJRCQEPOP","target":"record","payload":{"canonical_record":{"source":{"id":"1304.2865","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2013-04-10T07:32:31Z","cross_cats_sorted":["cs.LG","stat.ML"],"title_canon_sha256":"412944093b8d7c560544f7865134ef0d4da6095e3eef7da0a57989b82c379bec","abstract_canon_sha256":"7b72a3db37093752c48a1d4df7c25bc5eab02364aada9637ad98d3e36b63a859"},"schema_version":"1.0"},"canonical_sha256":"01b73136db5ed6381a3a551311408f73fa9a6b020705fe10d647bd690aa30450","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:28:28.089872Z","signature_b64":"wDr2sddbGFrLhTTcFj8Ke/jTmiboK0T65dIv1FapemWAzMgG+Nq+dhMlD4eyGBh8M4G2RkC3mg7e74EzMbieBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"01b73136db5ed6381a3a551311408f73fa9a6b020705fe10d647bd690aa30450","last_reissued_at":"2026-05-18T03:28:28.089233Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:28:28.089233Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1304.2865","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":"2026-05-18T03:28:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TiDh+/T3FBh51f8z5Na79K7Bs5Slrw0rT4i7dTsgOaLaehDxx1NouhUxluULlzSNYPnCm2GMVNx43Cem3tIiCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T02:37:59.454088Z"},"content_sha256":"336da6b42f09d1391f208dac4d72d28ff6bbbea32a3013a0030eeeac598ab9cc","schema_version":"1.0","event_id":"sha256:336da6b42f09d1391f208dac4d72d28ff6bbbea32a3013a0030eeeac598ab9cc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:AG3TCNW3L3LDQGR2KUJRCQEPOP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The BOSARIS Toolkit: Theory, Algorithms and Code for Surviving the New DCF","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.LG","stat.ML"],"primary_cat":"stat.AP","authors_text":"Edward de Villiers, Niko Br\\\"ummer","submitted_at":"2013-04-10T07:32:31Z","abstract_excerpt":"The change of two orders of magnitude in the 'new DCF' of NIST's SRE'10, relative to the 'old DCF' evaluation criterion, posed a difficult challenge for participants and evaluator alike. Initially, participants were at a loss as to how to calibrate their systems, while the evaluator underestimated the required number of evaluation trials. After the fact, it is now obvious that both calibration and evaluation require very large sets of trials. This poses the challenges of (i) how to decide what number of trials is enough, and (ii) how to process such large data sets with reasonable memory and C"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.2865","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":"2026-05-18T03:28:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VMfusPEGto3pf8XMA1Id9K9igKv7TuZyFUoGHZFA/9lTeVfzqDVxZS5Srmktj2W3BSkjq5sLaw45hPMwcKdcAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T02:37:59.454452Z"},"content_sha256":"cdbbe827a0c29123591a6355adc802c9b6989ce6b292dcaef8c0cad4f21363a1","schema_version":"1.0","event_id":"sha256:cdbbe827a0c29123591a6355adc802c9b6989ce6b292dcaef8c0cad4f21363a1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AG3TCNW3L3LDQGR2KUJRCQEPOP/bundle.json","state_url":"https://pith.science/pith/AG3TCNW3L3LDQGR2KUJRCQEPOP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AG3TCNW3L3LDQGR2KUJRCQEPOP/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":"2026-06-03T02:37:59Z","links":{"resolver":"https://pith.science/pith/AG3TCNW3L3LDQGR2KUJRCQEPOP","bundle":"https://pith.science/pith/AG3TCNW3L3LDQGR2KUJRCQEPOP/bundle.json","state":"https://pith.science/pith/AG3TCNW3L3LDQGR2KUJRCQEPOP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AG3TCNW3L3LDQGR2KUJRCQEPOP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:AG3TCNW3L3LDQGR2KUJRCQEPOP","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":"7b72a3db37093752c48a1d4df7c25bc5eab02364aada9637ad98d3e36b63a859","cross_cats_sorted":["cs.LG","stat.ML"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2013-04-10T07:32:31Z","title_canon_sha256":"412944093b8d7c560544f7865134ef0d4da6095e3eef7da0a57989b82c379bec"},"schema_version":"1.0","source":{"id":"1304.2865","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.2865","created_at":"2026-05-18T03:28:28Z"},{"alias_kind":"arxiv_version","alias_value":"1304.2865v1","created_at":"2026-05-18T03:28:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.2865","created_at":"2026-05-18T03:28:28Z"},{"alias_kind":"pith_short_12","alias_value":"AG3TCNW3L3LD","created_at":"2026-05-18T12:27:38Z"},{"alias_kind":"pith_short_16","alias_value":"AG3TCNW3L3LDQGR2","created_at":"2026-05-18T12:27:38Z"},{"alias_kind":"pith_short_8","alias_value":"AG3TCNW3","created_at":"2026-05-18T12:27:38Z"}],"graph_snapshots":[{"event_id":"sha256:cdbbe827a0c29123591a6355adc802c9b6989ce6b292dcaef8c0cad4f21363a1","target":"graph","created_at":"2026-05-18T03:28:28Z","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":"The change of two orders of magnitude in the 'new DCF' of NIST's SRE'10, relative to the 'old DCF' evaluation criterion, posed a difficult challenge for participants and evaluator alike. Initially, participants were at a loss as to how to calibrate their systems, while the evaluator underestimated the required number of evaluation trials. After the fact, it is now obvious that both calibration and evaluation require very large sets of trials. This poses the challenges of (i) how to decide what number of trials is enough, and (ii) how to process such large data sets with reasonable memory and C","authors_text":"Edward de Villiers, Niko Br\\\"ummer","cross_cats":["cs.LG","stat.ML"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2013-04-10T07:32:31Z","title":"The BOSARIS Toolkit: Theory, Algorithms and Code for Surviving the New DCF"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.2865","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":"sha256:336da6b42f09d1391f208dac4d72d28ff6bbbea32a3013a0030eeeac598ab9cc","target":"record","created_at":"2026-05-18T03:28:28Z","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":"7b72a3db37093752c48a1d4df7c25bc5eab02364aada9637ad98d3e36b63a859","cross_cats_sorted":["cs.LG","stat.ML"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2013-04-10T07:32:31Z","title_canon_sha256":"412944093b8d7c560544f7865134ef0d4da6095e3eef7da0a57989b82c379bec"},"schema_version":"1.0","source":{"id":"1304.2865","kind":"arxiv","version":1}},"canonical_sha256":"01b73136db5ed6381a3a551311408f73fa9a6b020705fe10d647bd690aa30450","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"01b73136db5ed6381a3a551311408f73fa9a6b020705fe10d647bd690aa30450","first_computed_at":"2026-05-18T03:28:28.089233Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:28:28.089233Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wDr2sddbGFrLhTTcFj8Ke/jTmiboK0T65dIv1FapemWAzMgG+Nq+dhMlD4eyGBh8M4G2RkC3mg7e74EzMbieBw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:28:28.089872Z","signed_message":"canonical_sha256_bytes"},"source_id":"1304.2865","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:336da6b42f09d1391f208dac4d72d28ff6bbbea32a3013a0030eeeac598ab9cc","sha256:cdbbe827a0c29123591a6355adc802c9b6989ce6b292dcaef8c0cad4f21363a1"],"state_sha256":"60532bfd8987eb7e6099d856c93e9ade91cedb54f1dbb31381df21bbba1e21ed"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HDKVhoyF632Mtg8d4n89HqRVRVSwMgJ627Xz1Kd4WUZT7NUy5GnIICieP2tblEXrmZFUqPaJg1Old++baJeeAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T02:37:59.456524Z","bundle_sha256":"da76f4624ba42f1271092af3b8892bb7ea874718a4726522a470c5546a7fc818"}}