{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:3FNDXNFPWFNWAZS7ULRQLLAYCX","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":"9d00301449a1835dcf6c80df9e88fb3a0e3d8b19d375601954b57dab305e55d8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ME","submitted_at":"2018-05-16T07:58:05Z","title_canon_sha256":"2d95b72ab8453b3a88f18a93aa16cd3c852109ce0a69f8e50cc458ccf5413978"},"schema_version":"1.0","source":{"id":"1805.06178","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.06178","created_at":"2026-05-18T00:15:48Z"},{"alias_kind":"arxiv_version","alias_value":"1805.06178v1","created_at":"2026-05-18T00:15:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.06178","created_at":"2026-05-18T00:15:48Z"},{"alias_kind":"pith_short_12","alias_value":"3FNDXNFPWFNW","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_16","alias_value":"3FNDXNFPWFNWAZS7","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_8","alias_value":"3FNDXNFP","created_at":"2026-05-18T12:32:02Z"}],"graph_snapshots":[{"event_id":"sha256:d58bb549f1f2731323a61cd1a8905ffc89086935681247b16280cc6246e86221","target":"graph","created_at":"2026-05-18T00:15:48Z","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 a chirp-like signal model as an alternative to a chirp model and a generalisation of the sinusoidal model, which is a fundamental model in the statistical signal processing literature. It is observed that the proposed model can be arbitrarily close to the chirp model. The propounded model is similar to a chirp model in the sense that here also the frequency changes linearly with time. However, the parameter estimation of a chirp-like model is simpler compared to a chirp model. In this paper, we consider the least squares and the sequential least squares estimation procedures and stu","authors_text":"Amit Mitra, Debasis Kundu, Rhythm Grover","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ME","submitted_at":"2018-05-16T07:58:05Z","title":"Chirp-like model and its parameter estimation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.06178","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":"sha256:982c0615d25657232e47552a9ad9a6ec967e8c30463bb6ba5b044f736055da82","target":"record","created_at":"2026-05-18T00:15:48Z","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":"9d00301449a1835dcf6c80df9e88fb3a0e3d8b19d375601954b57dab305e55d8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ME","submitted_at":"2018-05-16T07:58:05Z","title_canon_sha256":"2d95b72ab8453b3a88f18a93aa16cd3c852109ce0a69f8e50cc458ccf5413978"},"schema_version":"1.0","source":{"id":"1805.06178","kind":"arxiv","version":1}},"canonical_sha256":"d95a3bb4afb15b60665fa2e305ac1815e5e5f722fe2a892a8dea4ba0cfcafe31","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d95a3bb4afb15b60665fa2e305ac1815e5e5f722fe2a892a8dea4ba0cfcafe31","first_computed_at":"2026-05-18T00:15:48.540265Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:15:48.540265Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"y3naGk7DUOCSrSDT3hbRKcfsItro526BaOoVKt5Qfwv1GHCVnEBaxWp5KlnuZNAqW6Yc40LO5+yOmU1ysU+3Bw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:15:48.540921Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.06178","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:982c0615d25657232e47552a9ad9a6ec967e8c30463bb6ba5b044f736055da82","sha256:d58bb549f1f2731323a61cd1a8905ffc89086935681247b16280cc6246e86221"],"state_sha256":"f0f57a9facdd3240e0a3d16f4461c4c734c8bca5c2c9d0ae3525a91a880c9613"}