{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:BMAYTGOGNHRFVY2MZAMM43SHOY","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":"f2df524a5a092784ca2b5474dfb2c3b3fffb0b66654194c42ac1df35229de228","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-04-27T08:53:01Z","title_canon_sha256":"dd6c789d8050a0b0e678c38ca63b76bb13dfe47f8715bd6c024d3d0aa404d56e"},"schema_version":"1.0","source":{"id":"1604.07980","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.07980","created_at":"2026-05-18T01:14:20Z"},{"alias_kind":"arxiv_version","alias_value":"1604.07980v1","created_at":"2026-05-18T01:14:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.07980","created_at":"2026-05-18T01:14:20Z"},{"alias_kind":"pith_short_12","alias_value":"BMAYTGOGNHRF","created_at":"2026-05-18T12:30:07Z"},{"alias_kind":"pith_short_16","alias_value":"BMAYTGOGNHRFVY2M","created_at":"2026-05-18T12:30:07Z"},{"alias_kind":"pith_short_8","alias_value":"BMAYTGOG","created_at":"2026-05-18T12:30:07Z"}],"graph_snapshots":[{"event_id":"sha256:820c3d0ed8140a2bcbf2f3f9c9ba137565f4c3ea2923a80738faab21d8e7646f","target":"graph","created_at":"2026-05-18T01:14:20Z","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":"This paper describes the implementation of polycomp, a open-sourced, publicly available program for compressing one-dimensional data series in tabular format. The program is particularly suited for compressing smooth, noiseless streams of data like pointing information, as one of the algorithms it implements applies a combination of least squares polynomial fitting and discrete Chebyshev transforms that is able to achieve a compression ratio Cr up to ~40 in the examples discussed in this work. This performance comes at the expense of a loss of information, whose upper bound is configured by th","authors_text":"Maurizio Tomasi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-04-27T08:53:01Z","title":"Polycomp: efficient and configurable compression of astronomical timelines"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.07980","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:be3fa24944853aa29d207a9d6ef7053c462e6680fb6624811bd3b1248670cad4","target":"record","created_at":"2026-05-18T01:14:20Z","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":"f2df524a5a092784ca2b5474dfb2c3b3fffb0b66654194c42ac1df35229de228","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-04-27T08:53:01Z","title_canon_sha256":"dd6c789d8050a0b0e678c38ca63b76bb13dfe47f8715bd6c024d3d0aa404d56e"},"schema_version":"1.0","source":{"id":"1604.07980","kind":"arxiv","version":1}},"canonical_sha256":"0b018999c669e25ae34cc818ce6e4776241f789b9805bb9c471f2b12d3f2b1ce","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0b018999c669e25ae34cc818ce6e4776241f789b9805bb9c471f2b12d3f2b1ce","first_computed_at":"2026-05-18T01:14:20.272800Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:14:20.272800Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jijn0t5h9+mYtBjtpBRTg1SL/PctjbkRdeDdKMXsLgkROeg3ISWf1327HNyUFS//DNrddX73aomamm/19UVHAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:14:20.273447Z","signed_message":"canonical_sha256_bytes"},"source_id":"1604.07980","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:be3fa24944853aa29d207a9d6ef7053c462e6680fb6624811bd3b1248670cad4","sha256:820c3d0ed8140a2bcbf2f3f9c9ba137565f4c3ea2923a80738faab21d8e7646f"],"state_sha256":"ff6e9ebd9402839b0d4567f835a6474a4b3c6cb97133d6834c268ab764442743"}