{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2021:7TBOOF5JTWE342HW73N766TFDY","short_pith_number":"pith:7TBOOF5J","schema_version":"1.0","canonical_sha256":"fcc2e717a99d89be68f6fedbff7a651e0dcf5767a6a199f9670eb3d41211f32e","source":{"kind":"arxiv","id":"2107.07728","version":1},"attestation_state":"computed","paper":{"title":"Recognizing bird species in diverse soundscapes under weak supervision","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.LG","eess.AS"],"primary_cat":"cs.SD","authors_text":"Christof Henkel, Pascal Pfeiffer, Philipp Singer","submitted_at":"2021-07-16T06:54:38Z","abstract_excerpt":"We present a robust classification approach for avian vocalization in complex and diverse soundscapes, achieving second place in the BirdCLEF2021 challenge. We illustrate how to make full use of pre-trained convolutional neural networks, by using an efficient modeling and training routine supplemented by novel augmentation methods. Thereby, we improve the generalization of weakly labeled crowd-sourced data to productive data collected by autonomous recording units. As such, we illustrate how to progress towards an accurate automated assessment of avian population which would enable global biod"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2107.07728","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.SD","submitted_at":"2021-07-16T06:54:38Z","cross_cats_sorted":["cs.LG","eess.AS"],"title_canon_sha256":"878067ba8514f7bd6e506363fffb11acaf5afb1aa34c9ad724a386be23143ff9","abstract_canon_sha256":"ebdd78c4f3db7dd073ed8bd823a7e6c1e4e09c07272ca898bf7b8daabcf1cf44"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:58:28.771191Z","signature_b64":"FxzLPENVFyV22JvLjA0a9OHrZ2gDb0piapbgEXWdIoq4r2/G13wDcz9yNqkwVRlnBBVrpd5nnctR0SOum1ZpBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fcc2e717a99d89be68f6fedbff7a651e0dcf5767a6a199f9670eb3d41211f32e","last_reissued_at":"2026-07-05T02:58:28.770744Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:58:28.770744Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Recognizing bird species in diverse soundscapes under weak supervision","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.LG","eess.AS"],"primary_cat":"cs.SD","authors_text":"Christof Henkel, Pascal Pfeiffer, Philipp Singer","submitted_at":"2021-07-16T06:54:38Z","abstract_excerpt":"We present a robust classification approach for avian vocalization in complex and diverse soundscapes, achieving second place in the BirdCLEF2021 challenge. We illustrate how to make full use of pre-trained convolutional neural networks, by using an efficient modeling and training routine supplemented by novel augmentation methods. Thereby, we improve the generalization of weakly labeled crowd-sourced data to productive data collected by autonomous recording units. As such, we illustrate how to progress towards an accurate automated assessment of avian population which would enable global biod"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2107.07728","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2107.07728/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2107.07728","created_at":"2026-07-05T02:58:28.770802+00:00"},{"alias_kind":"arxiv_version","alias_value":"2107.07728v1","created_at":"2026-07-05T02:58:28.770802+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2107.07728","created_at":"2026-07-05T02:58:28.770802+00:00"},{"alias_kind":"pith_short_12","alias_value":"7TBOOF5JTWE3","created_at":"2026-07-05T02:58:28.770802+00:00"},{"alias_kind":"pith_short_16","alias_value":"7TBOOF5JTWE342HW","created_at":"2026-07-05T02:58:28.770802+00:00"},{"alias_kind":"pith_short_8","alias_value":"7TBOOF5J","created_at":"2026-07-05T02:58:28.770802+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/7TBOOF5JTWE342HW73N766TFDY","json":"https://pith.science/pith/7TBOOF5JTWE342HW73N766TFDY.json","graph_json":"https://pith.science/api/pith-number/7TBOOF5JTWE342HW73N766TFDY/graph.json","events_json":"https://pith.science/api/pith-number/7TBOOF5JTWE342HW73N766TFDY/events.json","paper":"https://pith.science/paper/7TBOOF5J"},"agent_actions":{"view_html":"https://pith.science/pith/7TBOOF5JTWE342HW73N766TFDY","download_json":"https://pith.science/pith/7TBOOF5JTWE342HW73N766TFDY.json","view_paper":"https://pith.science/paper/7TBOOF5J","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2107.07728&json=true","fetch_graph":"https://pith.science/api/pith-number/7TBOOF5JTWE342HW73N766TFDY/graph.json","fetch_events":"https://pith.science/api/pith-number/7TBOOF5JTWE342HW73N766TFDY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/7TBOOF5JTWE342HW73N766TFDY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/7TBOOF5JTWE342HW73N766TFDY/action/storage_attestation","attest_author":"https://pith.science/pith/7TBOOF5JTWE342HW73N766TFDY/action/author_attestation","sign_citation":"https://pith.science/pith/7TBOOF5JTWE342HW73N766TFDY/action/citation_signature","submit_replication":"https://pith.science/pith/7TBOOF5JTWE342HW73N766TFDY/action/replication_record"}},"created_at":"2026-07-05T02:58:28.770802+00:00","updated_at":"2026-07-05T02:58:28.770802+00:00"}