{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:YKISQ6WN2SVH7YQDI5ZMO5W4OR","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":"4046664d31526de099eb595d2e181c666e3e41cfbacc7bb932aa2873cdcc35b1","cross_cats_sorted":["cs.HC","eess.AS"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.SD","submitted_at":"2017-11-07T12:13:30Z","title_canon_sha256":"ce9b70b4e038715df4a958d688daf56c6a56fd6fb6c441bab668d3b4fb098cc3"},"schema_version":"1.0","source":{"id":"1711.02427","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.02427","created_at":"2026-05-18T00:31:07Z"},{"alias_kind":"arxiv_version","alias_value":"1711.02427v1","created_at":"2026-05-18T00:31:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.02427","created_at":"2026-05-18T00:31:07Z"},{"alias_kind":"pith_short_12","alias_value":"YKISQ6WN2SVH","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_16","alias_value":"YKISQ6WN2SVH7YQD","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_8","alias_value":"YKISQ6WN","created_at":"2026-05-18T12:31:56Z"}],"graph_snapshots":[{"event_id":"sha256:8c07be7db8518d8d8700a5971a5bfd564ce73c7927b0316c48c1a99221e5223a","target":"graph","created_at":"2026-05-18T00:31:07Z","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":"In this paper we present a preliminary version of the ACCompanion, an expressive accompaniment system for MIDI input. The system uses a probabilistic monophonic score follower to track the position of the soloist in the score, and a linear Gaussian model to compute tempo updates. The expressiveness of the system is powered by the Basis-Mixer, a state-of-the-art computational model of expressive music performance. The system allows for expressive dynamics, timing and articulation.","authors_text":"Amaury Durand, Andreas Arzt, Carlos Cancino-Chac\\'on, Gerhard Widmer, Laura Bishop, Maarten Grachten, Martin Bonev, Werner Goebl","cross_cats":["cs.HC","eess.AS"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.SD","submitted_at":"2017-11-07T12:13:30Z","title":"The ACCompanion v0.1: An Expressive Accompaniment System"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.02427","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":"sha256:19c5a21c63c4f6cdd1fe1e332ff87788bb667f45d17478fa6d77002625cdc23a","target":"record","created_at":"2026-05-18T00:31:07Z","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":"4046664d31526de099eb595d2e181c666e3e41cfbacc7bb932aa2873cdcc35b1","cross_cats_sorted":["cs.HC","eess.AS"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.SD","submitted_at":"2017-11-07T12:13:30Z","title_canon_sha256":"ce9b70b4e038715df4a958d688daf56c6a56fd6fb6c441bab668d3b4fb098cc3"},"schema_version":"1.0","source":{"id":"1711.02427","kind":"arxiv","version":1}},"canonical_sha256":"c291287acdd4aa7fe2034772c776dc74405cd370a0ae56ae933a09703d8ebdd8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c291287acdd4aa7fe2034772c776dc74405cd370a0ae56ae933a09703d8ebdd8","first_computed_at":"2026-05-18T00:31:07.928764Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:31:07.928764Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JfSaD3xujiFwmT5p9aoFNKyivp6HpaJAsTYrWqUl7S9UY/GzuV0jqOCroG7JG8Gtrkm/PmbVrT+oGhkhz/JaCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:31:07.929582Z","signed_message":"canonical_sha256_bytes"},"source_id":"1711.02427","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:19c5a21c63c4f6cdd1fe1e332ff87788bb667f45d17478fa6d77002625cdc23a","sha256:8c07be7db8518d8d8700a5971a5bfd564ce73c7927b0316c48c1a99221e5223a"],"state_sha256":"b1e00b4ca2962298ecdd791ebb1b309e0e0c61c02637aaa1232364547eeeb857"}