{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:46PE2PJPBZO3QWQN4OVZREMDI4","short_pith_number":"pith:46PE2PJP","canonical_record":{"source":{"id":"2506.03650","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2025-06-04T07:42:56Z","cross_cats_sorted":["cs.SY"],"title_canon_sha256":"8ef0a6232dd76a0669758eda7908695a1208f0a6c189bc6450aff84f4ed16792","abstract_canon_sha256":"a8c09b5b0ffa9c88bf56566a63aab8326f251a3234ac38ee84639adc29f929b0"},"schema_version":"1.0"},"canonical_sha256":"e79e4d3d2f0e5db85a0de3ab98918347270b5d9b3852d9703f0a9be49d6b3d70","source":{"kind":"arxiv","id":"2506.03650","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.03650","created_at":"2026-07-05T11:15:49Z"},{"alias_kind":"arxiv_version","alias_value":"2506.03650v1","created_at":"2026-07-05T11:15:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.03650","created_at":"2026-07-05T11:15:49Z"},{"alias_kind":"pith_short_12","alias_value":"46PE2PJPBZO3","created_at":"2026-07-05T11:15:49Z"},{"alias_kind":"pith_short_16","alias_value":"46PE2PJPBZO3QWQN","created_at":"2026-07-05T11:15:49Z"},{"alias_kind":"pith_short_8","alias_value":"46PE2PJP","created_at":"2026-07-05T11:15:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:46PE2PJPBZO3QWQN4OVZREMDI4","target":"record","payload":{"canonical_record":{"source":{"id":"2506.03650","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2025-06-04T07:42:56Z","cross_cats_sorted":["cs.SY"],"title_canon_sha256":"8ef0a6232dd76a0669758eda7908695a1208f0a6c189bc6450aff84f4ed16792","abstract_canon_sha256":"a8c09b5b0ffa9c88bf56566a63aab8326f251a3234ac38ee84639adc29f929b0"},"schema_version":"1.0"},"canonical_sha256":"e79e4d3d2f0e5db85a0de3ab98918347270b5d9b3852d9703f0a9be49d6b3d70","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:15:49.387612Z","signature_b64":"eeQBGEIjINccaFPepOOinnCpIKV/822gXmD6jyuEAdTvGwrJlsCTww+WFYMN6TQVmMB8aJftYzt4KyCVpLQxCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e79e4d3d2f0e5db85a0de3ab98918347270b5d9b3852d9703f0a9be49d6b3d70","last_reissued_at":"2026-07-05T11:15:49.387121Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:15:49.387121Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2506.03650","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":"2026-07-05T11:15:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IXl/5JtBXwrOQXj1OErHxAReANrGhdnWObX56LkpqnHuVH5+Cid+oth9qUMdZSqKRyJICZq4o/JpESeGXjwvBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T14:14:21.254582Z"},"content_sha256":"dcd0fbf72765e0e1d2bcdb76a18085d80b5c15550deda896ea5b2bbe9084b5cc","schema_version":"1.0","event_id":"sha256:dcd0fbf72765e0e1d2bcdb76a18085d80b5c15550deda896ea5b2bbe9084b5cc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:46PE2PJPBZO3QWQN4OVZREMDI4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fast Sampling for System Identification: Overcoming Noise, Offsets, and Closed-Loop Challenges with State Variable Filter","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.SY"],"primary_cat":"eess.SY","authors_text":"Ichiro Maruta, Toshiharu Sugie","submitted_at":"2025-06-04T07:42:56Z","abstract_excerpt":"This paper investigates the effects of setting the sampling frequency significantly higher than conventional guidelines in system identification. Although continuous-time identification methods resolve the numerical difficulties encountered in discrete-time approaches when employing fast sampling (e.g., the problems caused by all poles approaching unity), the potential benefits of using sampling frequencies that far exceed traditional rules like the \"ten times the bandwidth\" guideline remained largely unexplored. We show that using a state variable filter (SVF)-like least squares approach, the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.03650","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/2506.03650/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":"2026-07-05T11:15:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LY+b59dnHo6vm1++U5/hs+MwUGBSmosqg3i/FUaHweDLTZMHw3uzkZG+eZWK5sQgnmre8aEkg8IYI124xxmYAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T14:14:21.255454Z"},"content_sha256":"ff5e6e4bfee487023803e46803722b428322b0133852ed16a8ee3b3890151491","schema_version":"1.0","event_id":"sha256:ff5e6e4bfee487023803e46803722b428322b0133852ed16a8ee3b3890151491"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/46PE2PJPBZO3QWQN4OVZREMDI4/bundle.json","state_url":"https://pith.science/pith/46PE2PJPBZO3QWQN4OVZREMDI4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/46PE2PJPBZO3QWQN4OVZREMDI4/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":"2026-08-09T14:14:21Z","links":{"resolver":"https://pith.science/pith/46PE2PJPBZO3QWQN4OVZREMDI4","bundle":"https://pith.science/pith/46PE2PJPBZO3QWQN4OVZREMDI4/bundle.json","state":"https://pith.science/pith/46PE2PJPBZO3QWQN4OVZREMDI4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/46PE2PJPBZO3QWQN4OVZREMDI4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:46PE2PJPBZO3QWQN4OVZREMDI4","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":"a8c09b5b0ffa9c88bf56566a63aab8326f251a3234ac38ee84639adc29f929b0","cross_cats_sorted":["cs.SY"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2025-06-04T07:42:56Z","title_canon_sha256":"8ef0a6232dd76a0669758eda7908695a1208f0a6c189bc6450aff84f4ed16792"},"schema_version":"1.0","source":{"id":"2506.03650","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.03650","created_at":"2026-07-05T11:15:49Z"},{"alias_kind":"arxiv_version","alias_value":"2506.03650v1","created_at":"2026-07-05T11:15:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.03650","created_at":"2026-07-05T11:15:49Z"},{"alias_kind":"pith_short_12","alias_value":"46PE2PJPBZO3","created_at":"2026-07-05T11:15:49Z"},{"alias_kind":"pith_short_16","alias_value":"46PE2PJPBZO3QWQN","created_at":"2026-07-05T11:15:49Z"},{"alias_kind":"pith_short_8","alias_value":"46PE2PJP","created_at":"2026-07-05T11:15:49Z"}],"graph_snapshots":[{"event_id":"sha256:ff5e6e4bfee487023803e46803722b428322b0133852ed16a8ee3b3890151491","target":"graph","created_at":"2026-07-05T11:15:49Z","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/2506.03650/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This paper investigates the effects of setting the sampling frequency significantly higher than conventional guidelines in system identification. Although continuous-time identification methods resolve the numerical difficulties encountered in discrete-time approaches when employing fast sampling (e.g., the problems caused by all poles approaching unity), the potential benefits of using sampling frequencies that far exceed traditional rules like the \"ten times the bandwidth\" guideline remained largely unexplored. We show that using a state variable filter (SVF)-like least squares approach, the","authors_text":"Ichiro Maruta, Toshiharu Sugie","cross_cats":["cs.SY"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2025-06-04T07:42:56Z","title":"Fast Sampling for System Identification: Overcoming Noise, Offsets, and Closed-Loop Challenges with State Variable Filter"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.03650","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:dcd0fbf72765e0e1d2bcdb76a18085d80b5c15550deda896ea5b2bbe9084b5cc","target":"record","created_at":"2026-07-05T11:15:49Z","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":"a8c09b5b0ffa9c88bf56566a63aab8326f251a3234ac38ee84639adc29f929b0","cross_cats_sorted":["cs.SY"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2025-06-04T07:42:56Z","title_canon_sha256":"8ef0a6232dd76a0669758eda7908695a1208f0a6c189bc6450aff84f4ed16792"},"schema_version":"1.0","source":{"id":"2506.03650","kind":"arxiv","version":1}},"canonical_sha256":"e79e4d3d2f0e5db85a0de3ab98918347270b5d9b3852d9703f0a9be49d6b3d70","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e79e4d3d2f0e5db85a0de3ab98918347270b5d9b3852d9703f0a9be49d6b3d70","first_computed_at":"2026-07-05T11:15:49.387121Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:15:49.387121Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eeQBGEIjINccaFPepOOinnCpIKV/822gXmD6jyuEAdTvGwrJlsCTww+WFYMN6TQVmMB8aJftYzt4KyCVpLQxCA==","signature_status":"signed_v1","signed_at":"2026-07-05T11:15:49.387612Z","signed_message":"canonical_sha256_bytes"},"source_id":"2506.03650","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dcd0fbf72765e0e1d2bcdb76a18085d80b5c15550deda896ea5b2bbe9084b5cc","sha256:ff5e6e4bfee487023803e46803722b428322b0133852ed16a8ee3b3890151491"],"state_sha256":"603df4ad8114bd34cbf14d0a745a730077d409230f23b696571e3e30dc0673a0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mAFm/ASpihcjgQZAtyXdIYQ6c55HGxH5peasMuA+Xh+iSyNwJsCo1NKaMdyfn2rDawEnPxHwpDKRB0TocwPzAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-09T14:14:21.262937Z","bundle_sha256":"f1ced00baf73d4ee0f3f0ecc1b9d48203259c6ef719057516677a99b8509ac0b"}}