{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:RBQZQULBHKR6WWPVR2N2A7YY5K","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":"b9fdb258ef2d8321b3ba84238110eed77612ad333af3c462904a894e4a203ee5","cross_cats_sorted":["cs.LG","cs.SD","stat.ML"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2020-02-06T15:13:49Z","title_canon_sha256":"787a253e5451e7a0fc8830703b791b3f3edb0f95731cd5f7a9073e39d29f7076"},"schema_version":"1.0","source":{"id":"2002.03801","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2002.03801","created_at":"2026-07-05T00:53:53Z"},{"alias_kind":"arxiv_version","alias_value":"2002.03801v2","created_at":"2026-07-05T00:53:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2002.03801","created_at":"2026-07-05T00:53:53Z"},{"alias_kind":"pith_short_12","alias_value":"RBQZQULBHKR6","created_at":"2026-07-05T00:53:53Z"},{"alias_kind":"pith_short_16","alias_value":"RBQZQULBHKR6WWPV","created_at":"2026-07-05T00:53:53Z"},{"alias_kind":"pith_short_8","alias_value":"RBQZQULB","created_at":"2026-07-05T00:53:53Z"}],"graph_snapshots":[{"event_id":"sha256:91c15a238a6774c23262d97db048593e862989eaa2bee7c9ebb75beb6d7c223b","target":"graph","created_at":"2026-07-05T00:53:53Z","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/2002.03801/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The spoofing countermeasure (CM) systems in automatic speaker verification (ASV) are not typically used in isolation of each other. These systems can be combined, for example, into a cascaded system where CM produces first a decision whether the input is synthetic or bona fide speech. In case the CM decides it is a bona fide sample, then the ASV system will consider it for speaker verification. End users of the system are not interested in the performance of the individual sub-modules, but instead are interested in the performance of the combined system. Such combination can be evaluated with ","authors_text":"Anssi Kanervisto, Junichi Yamagishi, Tomi Kinnunen, Ville Hautam\\\"aki","cross_cats":["cs.LG","cs.SD","stat.ML"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2020-02-06T15:13:49Z","title":"An initial investigation on optimizing tandem speaker verification and countermeasure systems using reinforcement learning"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2002.03801","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:c31b70328e99fc452971aa193c9c1ad3f0c018390d91079f7417e0551c2e8c74","target":"record","created_at":"2026-07-05T00:53:53Z","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":"b9fdb258ef2d8321b3ba84238110eed77612ad333af3c462904a894e4a203ee5","cross_cats_sorted":["cs.LG","cs.SD","stat.ML"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2020-02-06T15:13:49Z","title_canon_sha256":"787a253e5451e7a0fc8830703b791b3f3edb0f95731cd5f7a9073e39d29f7076"},"schema_version":"1.0","source":{"id":"2002.03801","kind":"arxiv","version":2}},"canonical_sha256":"88619851613aa3eb59f58e9ba07f18ea9b7770436672ca5d7ff0e95c35e2e134","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"88619851613aa3eb59f58e9ba07f18ea9b7770436672ca5d7ff0e95c35e2e134","first_computed_at":"2026-07-05T00:53:53.076541Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:53:53.076541Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HoGr4zbn+wk0rnf1Y9YVYhXQnF4QsM8Fm/om9O3ITESn5nKwA9HWplTM0kYp4bFDcSD9oH3AvtVIPtaoyAVfDw==","signature_status":"signed_v1","signed_at":"2026-07-05T00:53:53.077064Z","signed_message":"canonical_sha256_bytes"},"source_id":"2002.03801","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c31b70328e99fc452971aa193c9c1ad3f0c018390d91079f7417e0551c2e8c74","sha256:91c15a238a6774c23262d97db048593e862989eaa2bee7c9ebb75beb6d7c223b"],"state_sha256":"c007da168ba89cbeed162abca5e5161d1a2cb1591622825b563bdd05fccb6587"}