{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:PY5RKAX37J6A7EJROTCQIRNALO","short_pith_number":"pith:PY5RKAX3","canonical_record":{"source":{"id":"1910.09021","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2019-10-20T16:50:49Z","cross_cats_sorted":["cs.IR","cs.MM","eess.AS"],"title_canon_sha256":"546a42bdff0185005fa31192d76e80133b4c7799ef76d87b1a55405a823ed9ac","abstract_canon_sha256":"cf212534fbbede1254984d58a645a93bb4659e029f9f7c3b5629e0dba994d5bc"},"schema_version":"1.0"},"canonical_sha256":"7e3b1502fbfa7c0f913174c50445a05b928730472b65fcee08474ef13ed95f69","source":{"kind":"arxiv","id":"1910.09021","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1910.09021","created_at":"2026-07-05T00:13:21Z"},{"alias_kind":"arxiv_version","alias_value":"1910.09021v1","created_at":"2026-07-05T00:13:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1910.09021","created_at":"2026-07-05T00:13:21Z"},{"alias_kind":"pith_short_12","alias_value":"PY5RKAX37J6A","created_at":"2026-07-05T00:13:21Z"},{"alias_kind":"pith_short_16","alias_value":"PY5RKAX37J6A7EJR","created_at":"2026-07-05T00:13:21Z"},{"alias_kind":"pith_short_8","alias_value":"PY5RKAX3","created_at":"2026-07-05T00:13:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:PY5RKAX37J6A7EJROTCQIRNALO","target":"record","payload":{"canonical_record":{"source":{"id":"1910.09021","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2019-10-20T16:50:49Z","cross_cats_sorted":["cs.IR","cs.MM","eess.AS"],"title_canon_sha256":"546a42bdff0185005fa31192d76e80133b4c7799ef76d87b1a55405a823ed9ac","abstract_canon_sha256":"cf212534fbbede1254984d58a645a93bb4659e029f9f7c3b5629e0dba994d5bc"},"schema_version":"1.0"},"canonical_sha256":"7e3b1502fbfa7c0f913174c50445a05b928730472b65fcee08474ef13ed95f69","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:13:21.961707Z","signature_b64":"JszrHNiNjPTS7YRlOezH/METzPpI30/Fk723RYUsgBxPaf/2BWFUf8fYAhpFJWFHff/j7A51T+I0BirzFB9zBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7e3b1502fbfa7c0f913174c50445a05b928730472b65fcee08474ef13ed95f69","last_reissued_at":"2026-07-05T00:13:21.961214Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:13:21.961214Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1910.09021","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":"2026-07-05T00:13:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hWorYZIaFiuS0YJyf3GB6uaAZvDnNEUYeFk5OLCmppOgttea+7yoaPf1J/Kv4Ggz0T6FcfZ3076NFqgKs5M1DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T02:47:00.109298Z"},"content_sha256":"4439088d993d446192dd98bb3acec71191e8c67ed537d439f8383fdeb1edc8ab","schema_version":"1.0","event_id":"sha256:4439088d993d446192dd98bb3acec71191e8c67ed537d439f8383fdeb1edc8ab"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:PY5RKAX37J6A7EJROTCQIRNALO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Musical Instrument Playing Technique Detection Based on FCN: Using Chinese Bowed-Stringed Instrument as an Example","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.IR","cs.MM","eess.AS"],"primary_cat":"cs.SD","authors_text":"Baoqiang Han, Deshun Yang, Jingru Li, Shicheng Zhang, Xiaoou Chen, Zehao Wang, Zijin Li","submitted_at":"2019-10-20T16:50:49Z","abstract_excerpt":"Unlike melody extraction and other aspects of music transcription, research on playing technique detection is still in its early stages. Compared to existing work mostly focused on playing technique detection for individual single notes, we propose a general end-to-end method based on Sound Event Detection by FCN for musical instrument playing technique detection. In our case, we choose Erhu, a well-known Chinese bowed-stringed instrument, to experiment with our method. Because of the limitation of FCN, we present an algorithm to detect on variable length audio. The effectiveness of the propos"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1910.09021","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/1910.09021/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:13:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JUXJqolOXBg/gp5KC5K3H9ZfFD4I0U4b971w+zld/IwJaNsDQ7Vyx8lJ9ifEEaFUOF+qUqmbjMsbowkzkOZhDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T02:47:00.109686Z"},"content_sha256":"db5d1940853893f87e33c8982dcf46a49afd671dc653bae87b704470430c919e","schema_version":"1.0","event_id":"sha256:db5d1940853893f87e33c8982dcf46a49afd671dc653bae87b704470430c919e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PY5RKAX37J6A7EJROTCQIRNALO/bundle.json","state_url":"https://pith.science/pith/PY5RKAX37J6A7EJROTCQIRNALO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PY5RKAX37J6A7EJROTCQIRNALO/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":"2026-07-07T02:47:00Z","links":{"resolver":"https://pith.science/pith/PY5RKAX37J6A7EJROTCQIRNALO","bundle":"https://pith.science/pith/PY5RKAX37J6A7EJROTCQIRNALO/bundle.json","state":"https://pith.science/pith/PY5RKAX37J6A7EJROTCQIRNALO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PY5RKAX37J6A7EJROTCQIRNALO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:PY5RKAX37J6A7EJROTCQIRNALO","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":"cf212534fbbede1254984d58a645a93bb4659e029f9f7c3b5629e0dba994d5bc","cross_cats_sorted":["cs.IR","cs.MM","eess.AS"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2019-10-20T16:50:49Z","title_canon_sha256":"546a42bdff0185005fa31192d76e80133b4c7799ef76d87b1a55405a823ed9ac"},"schema_version":"1.0","source":{"id":"1910.09021","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1910.09021","created_at":"2026-07-05T00:13:21Z"},{"alias_kind":"arxiv_version","alias_value":"1910.09021v1","created_at":"2026-07-05T00:13:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1910.09021","created_at":"2026-07-05T00:13:21Z"},{"alias_kind":"pith_short_12","alias_value":"PY5RKAX37J6A","created_at":"2026-07-05T00:13:21Z"},{"alias_kind":"pith_short_16","alias_value":"PY5RKAX37J6A7EJR","created_at":"2026-07-05T00:13:21Z"},{"alias_kind":"pith_short_8","alias_value":"PY5RKAX3","created_at":"2026-07-05T00:13:21Z"}],"graph_snapshots":[{"event_id":"sha256:db5d1940853893f87e33c8982dcf46a49afd671dc653bae87b704470430c919e","target":"graph","created_at":"2026-07-05T00:13:21Z","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/1910.09021/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Unlike melody extraction and other aspects of music transcription, research on playing technique detection is still in its early stages. Compared to existing work mostly focused on playing technique detection for individual single notes, we propose a general end-to-end method based on Sound Event Detection by FCN for musical instrument playing technique detection. In our case, we choose Erhu, a well-known Chinese bowed-stringed instrument, to experiment with our method. Because of the limitation of FCN, we present an algorithm to detect on variable length audio. The effectiveness of the propos","authors_text":"Baoqiang Han, Deshun Yang, Jingru Li, Shicheng Zhang, Xiaoou Chen, Zehao Wang, Zijin Li","cross_cats":["cs.IR","cs.MM","eess.AS"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2019-10-20T16:50:49Z","title":"Musical Instrument Playing Technique Detection Based on FCN: Using Chinese Bowed-Stringed Instrument as an Example"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1910.09021","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":"sha256:4439088d993d446192dd98bb3acec71191e8c67ed537d439f8383fdeb1edc8ab","target":"record","created_at":"2026-07-05T00:13:21Z","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":"cf212534fbbede1254984d58a645a93bb4659e029f9f7c3b5629e0dba994d5bc","cross_cats_sorted":["cs.IR","cs.MM","eess.AS"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2019-10-20T16:50:49Z","title_canon_sha256":"546a42bdff0185005fa31192d76e80133b4c7799ef76d87b1a55405a823ed9ac"},"schema_version":"1.0","source":{"id":"1910.09021","kind":"arxiv","version":1}},"canonical_sha256":"7e3b1502fbfa7c0f913174c50445a05b928730472b65fcee08474ef13ed95f69","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7e3b1502fbfa7c0f913174c50445a05b928730472b65fcee08474ef13ed95f69","first_computed_at":"2026-07-05T00:13:21.961214Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:13:21.961214Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JszrHNiNjPTS7YRlOezH/METzPpI30/Fk723RYUsgBxPaf/2BWFUf8fYAhpFJWFHff/j7A51T+I0BirzFB9zBA==","signature_status":"signed_v1","signed_at":"2026-07-05T00:13:21.961707Z","signed_message":"canonical_sha256_bytes"},"source_id":"1910.09021","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4439088d993d446192dd98bb3acec71191e8c67ed537d439f8383fdeb1edc8ab","sha256:db5d1940853893f87e33c8982dcf46a49afd671dc653bae87b704470430c919e"],"state_sha256":"0cb10c469f1070f2ab726791f2f1977366460f45675e8dcdd94821b0bc7bf8a9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IzII4sk2qVnEFhIUkzNSbJ4DwTn11gvj7cH14Nq3G36qVMFHd1UX6c0VBN2YuQyrbIxGR2z+hKAtQuV+snHoDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T02:47:00.111604Z","bundle_sha256":"0b087470ce480bc68bd3719abb897486c3944a7c38934561ee954290fc6d1fed"}}