{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:AMBGAZCC5MGYYTQHS6ASRBHV34","short_pith_number":"pith:AMBGAZCC","canonical_record":{"source":{"id":"2111.06046","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.SD","submitted_at":"2021-11-11T04:27:48Z","cross_cats_sorted":["cs.AI","eess.AS"],"title_canon_sha256":"dddbe4feb329c76bbc98e65743a42547f7f32a6bfa28db620e031b34767a8065","abstract_canon_sha256":"34c3a0d57e14b92f46eff95e4ebcdd40f50be099468cf0a28e1ab91754d51819"},"schema_version":"1.0"},"canonical_sha256":"0302606442eb0d8c4e0797812884f5df15f126e5f2aafbdff418f3f37f2c1fee","source":{"kind":"arxiv","id":"2111.06046","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2111.06046","created_at":"2026-07-05T03:30:57Z"},{"alias_kind":"arxiv_version","alias_value":"2111.06046v1","created_at":"2026-07-05T03:30:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.06046","created_at":"2026-07-05T03:30:57Z"},{"alias_kind":"pith_short_12","alias_value":"AMBGAZCC5MGY","created_at":"2026-07-05T03:30:57Z"},{"alias_kind":"pith_short_16","alias_value":"AMBGAZCC5MGYYTQH","created_at":"2026-07-05T03:30:57Z"},{"alias_kind":"pith_short_8","alias_value":"AMBGAZCC","created_at":"2026-07-05T03:30:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:AMBGAZCC5MGYYTQHS6ASRBHV34","target":"record","payload":{"canonical_record":{"source":{"id":"2111.06046","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.SD","submitted_at":"2021-11-11T04:27:48Z","cross_cats_sorted":["cs.AI","eess.AS"],"title_canon_sha256":"dddbe4feb329c76bbc98e65743a42547f7f32a6bfa28db620e031b34767a8065","abstract_canon_sha256":"34c3a0d57e14b92f46eff95e4ebcdd40f50be099468cf0a28e1ab91754d51819"},"schema_version":"1.0"},"canonical_sha256":"0302606442eb0d8c4e0797812884f5df15f126e5f2aafbdff418f3f37f2c1fee","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:30:57.438652Z","signature_b64":"H4S06iK63BwXlu13iDUkXcfHvz1o189//r52fdwBiq5um7w91Nlf8jdOU6JAL5+5DB1EjHxYGA4RvUkpAaRjDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0302606442eb0d8c4e0797812884f5df15f126e5f2aafbdff418f3f37f2c1fee","last_reissued_at":"2026-07-05T03:30:57.438257Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:30:57.438257Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2111.06046","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":"2026-07-05T03:30:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cUk5cAKxzZFhaEWTOfY07KsBqc+mFox8uMIk8B7UGJ2WsOIImiOAA4NLNFUfw6LGK/w0ULRSa+wLesZv/zXEAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T15:35:46.284742Z"},"content_sha256":"fe20177fd50a3c2ad571a8d5c41a670af9790046bcd6176b1d1f00efe45d08c7","schema_version":"1.0","event_id":"sha256:fe20177fd50a3c2ad571a8d5c41a670af9790046bcd6176b1d1f00efe45d08c7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:AMBGAZCC5MGYYTQHS6ASRBHV34","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Music Score Expansion with Variable-Length Infilling","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.AI","eess.AS"],"primary_cat":"cs.SD","authors_text":"Alvin W.Y. Su, Chih-Pin Tan, Chin-Jui Chang, Yi-Hsuan Yang","submitted_at":"2021-11-11T04:27:48Z","abstract_excerpt":"In this paper, we investigate using the variable-length infilling (VLI) model, which is originally proposed to infill missing segments, to \"prolong\" existing musical segments at musical boundaries. Specifically, as a case study, we expand 20 musical segments from 12 bars to 16 bars, and examine the degree to which the VLI model preserves musical boundaries in the expanded results using a few objective metrics, including the Register Histogram Similarity we newly propose. The results show that the VLI model has the potential to address the expansion task."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.06046","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/2111.06046/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":"2026-07-05T03:30:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EhmIks4NA8e0ayPSMf5ma7fwJ8Dsd+Q641eOYR/ZbUnwldDIeW2GQqpyIdHCH6vqHzc/moDa665NawrZ09IFDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T15:35:46.285105Z"},"content_sha256":"6b8cf312779f03046f0979b1fc274e68ee58b9c799ef412c81d1bed5f0c91b77","schema_version":"1.0","event_id":"sha256:6b8cf312779f03046f0979b1fc274e68ee58b9c799ef412c81d1bed5f0c91b77"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AMBGAZCC5MGYYTQHS6ASRBHV34/bundle.json","state_url":"https://pith.science/pith/AMBGAZCC5MGYYTQHS6ASRBHV34/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AMBGAZCC5MGYYTQHS6ASRBHV34/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":"2026-07-07T15:35:46Z","links":{"resolver":"https://pith.science/pith/AMBGAZCC5MGYYTQHS6ASRBHV34","bundle":"https://pith.science/pith/AMBGAZCC5MGYYTQHS6ASRBHV34/bundle.json","state":"https://pith.science/pith/AMBGAZCC5MGYYTQHS6ASRBHV34/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AMBGAZCC5MGYYTQHS6ASRBHV34/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:AMBGAZCC5MGYYTQHS6ASRBHV34","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":"34c3a0d57e14b92f46eff95e4ebcdd40f50be099468cf0a28e1ab91754d51819","cross_cats_sorted":["cs.AI","eess.AS"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.SD","submitted_at":"2021-11-11T04:27:48Z","title_canon_sha256":"dddbe4feb329c76bbc98e65743a42547f7f32a6bfa28db620e031b34767a8065"},"schema_version":"1.0","source":{"id":"2111.06046","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2111.06046","created_at":"2026-07-05T03:30:57Z"},{"alias_kind":"arxiv_version","alias_value":"2111.06046v1","created_at":"2026-07-05T03:30:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.06046","created_at":"2026-07-05T03:30:57Z"},{"alias_kind":"pith_short_12","alias_value":"AMBGAZCC5MGY","created_at":"2026-07-05T03:30:57Z"},{"alias_kind":"pith_short_16","alias_value":"AMBGAZCC5MGYYTQH","created_at":"2026-07-05T03:30:57Z"},{"alias_kind":"pith_short_8","alias_value":"AMBGAZCC","created_at":"2026-07-05T03:30:57Z"}],"graph_snapshots":[{"event_id":"sha256:6b8cf312779f03046f0979b1fc274e68ee58b9c799ef412c81d1bed5f0c91b77","target":"graph","created_at":"2026-07-05T03:30:57Z","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/2111.06046/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this paper, we investigate using the variable-length infilling (VLI) model, which is originally proposed to infill missing segments, to \"prolong\" existing musical segments at musical boundaries. Specifically, as a case study, we expand 20 musical segments from 12 bars to 16 bars, and examine the degree to which the VLI model preserves musical boundaries in the expanded results using a few objective metrics, including the Register Histogram Similarity we newly propose. The results show that the VLI model has the potential to address the expansion task.","authors_text":"Alvin W.Y. Su, Chih-Pin Tan, Chin-Jui Chang, Yi-Hsuan Yang","cross_cats":["cs.AI","eess.AS"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.SD","submitted_at":"2021-11-11T04:27:48Z","title":"Music Score Expansion with Variable-Length Infilling"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.06046","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:fe20177fd50a3c2ad571a8d5c41a670af9790046bcd6176b1d1f00efe45d08c7","target":"record","created_at":"2026-07-05T03:30:57Z","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":"34c3a0d57e14b92f46eff95e4ebcdd40f50be099468cf0a28e1ab91754d51819","cross_cats_sorted":["cs.AI","eess.AS"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.SD","submitted_at":"2021-11-11T04:27:48Z","title_canon_sha256":"dddbe4feb329c76bbc98e65743a42547f7f32a6bfa28db620e031b34767a8065"},"schema_version":"1.0","source":{"id":"2111.06046","kind":"arxiv","version":1}},"canonical_sha256":"0302606442eb0d8c4e0797812884f5df15f126e5f2aafbdff418f3f37f2c1fee","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0302606442eb0d8c4e0797812884f5df15f126e5f2aafbdff418f3f37f2c1fee","first_computed_at":"2026-07-05T03:30:57.438257Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:30:57.438257Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"H4S06iK63BwXlu13iDUkXcfHvz1o189//r52fdwBiq5um7w91Nlf8jdOU6JAL5+5DB1EjHxYGA4RvUkpAaRjDw==","signature_status":"signed_v1","signed_at":"2026-07-05T03:30:57.438652Z","signed_message":"canonical_sha256_bytes"},"source_id":"2111.06046","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fe20177fd50a3c2ad571a8d5c41a670af9790046bcd6176b1d1f00efe45d08c7","sha256:6b8cf312779f03046f0979b1fc274e68ee58b9c799ef412c81d1bed5f0c91b77"],"state_sha256":"9f8122621eb2c4f5c9cd536a7f48534e92914c200066aebb3cc845249cd96f49"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MpOHjEAMfwfJ4tSGssj7sDnHSkPFvQhnjTpLEkdMed5kGcasFW0P8aFWKYA/tF9zJn2WLJSgGtrLit58snczBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T15:35:46.287013Z","bundle_sha256":"62f4079b4a3454348f18e27cf149154c1623ed3dba2c38b58412a54674f7b39e"}}