{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:4ZO4LI6VHX4LMGYXGABVZNHDWW","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":"84788fb123bb9c5f64fb6e1a8c20c125c54748a1e1ea3b3540416607d2fb69f5","cross_cats_sorted":["q-fin.PR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-fin.GN","submitted_at":"2019-05-31T20:12:20Z","title_canon_sha256":"e9dd458fc8143048297d4e399376103c5fa5ec27f1c83e745c0c9f983288e188"},"schema_version":"1.0","source":{"id":"1906.00059","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.00059","created_at":"2026-05-17T23:44:33Z"},{"alias_kind":"arxiv_version","alias_value":"1906.00059v1","created_at":"2026-05-17T23:44:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.00059","created_at":"2026-05-17T23:44:33Z"},{"alias_kind":"pith_short_12","alias_value":"4ZO4LI6VHX4L","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_16","alias_value":"4ZO4LI6VHX4LMGYX","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_8","alias_value":"4ZO4LI6V","created_at":"2026-05-18T12:33:10Z"}],"graph_snapshots":[{"event_id":"sha256:b93014bddf5b8010f926f076e5f488d79b44d72b2260042dd08eb6a5c9e0bb98","target":"graph","created_at":"2026-05-17T23:44:33Z","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":"We propose how to quantify high-frequency market sentiment using high-frequency news from NASDAQ news platform and support vector machine classifiers. News arrive at markets randomly and the resulting news sentiment behaves like a stochastic process. To characterize the joint evolution of sentiment, price, and volatility, we introduce a unified continuous-time sentiment-driven stochastic volatility model. We provide closed-form formulas for moments of the volatility and news sentiment processes and study the news impact. Further, we implement a simulation-based method to calibrate the paramete","authors_text":"Cathy Yi-Hsuan Chen, Jan Vecer, Jozef Barunik","cross_cats":["q-fin.PR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-fin.GN","submitted_at":"2019-05-31T20:12:20Z","title":"Sentiment-Driven Stochastic Volatility Model: A High-Frequency Textual Tool for Economists"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.00059","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":"sha256:2ff29514d7ff16f429302bd398753ddcae818e3ec77564d136ffa2ded716df08","target":"record","created_at":"2026-05-17T23:44:33Z","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":"84788fb123bb9c5f64fb6e1a8c20c125c54748a1e1ea3b3540416607d2fb69f5","cross_cats_sorted":["q-fin.PR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-fin.GN","submitted_at":"2019-05-31T20:12:20Z","title_canon_sha256":"e9dd458fc8143048297d4e399376103c5fa5ec27f1c83e745c0c9f983288e188"},"schema_version":"1.0","source":{"id":"1906.00059","kind":"arxiv","version":1}},"canonical_sha256":"e65dc5a3d53df8b61b1730035cb4e3b5b1b45ce56f6493e1f56cf7109f451b85","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e65dc5a3d53df8b61b1730035cb4e3b5b1b45ce56f6493e1f56cf7109f451b85","first_computed_at":"2026-05-17T23:44:33.568172Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:44:33.568172Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"s+cGDW2F+37b9TxTJBRoUUnq5yqUpobjReFzOur7s0qZ6BHm7nFgxozS299pJvvDMUX0wtlSmfpQlpul3UJsAQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:44:33.568732Z","signed_message":"canonical_sha256_bytes"},"source_id":"1906.00059","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2ff29514d7ff16f429302bd398753ddcae818e3ec77564d136ffa2ded716df08","sha256:b93014bddf5b8010f926f076e5f488d79b44d72b2260042dd08eb6a5c9e0bb98"],"state_sha256":"d2b21a12b1be637d7fea944664027e37c61e46f8da6afe5b4613dc36f3c6a2a9"}