{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:GRLJOJAGBMHG26NLBRROEFSTRA","short_pith_number":"pith:GRLJOJAG","canonical_record":{"source":{"id":"2009.03442","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SP","submitted_at":"2020-09-07T22:08:08Z","cross_cats_sorted":["astro-ph.IM","physics.ins-det"],"title_canon_sha256":"a0e78c4584cbccab7f4b66bf35f31f3e3923b509ceb42ad7d58a0dea990ca84e","abstract_canon_sha256":"be8e127f39aacd5128fdd68e53da5e820e799b8d25f5b778b0e0b85eab3fd371"},"schema_version":"1.0"},"canonical_sha256":"34569724060b0e6d79ab0c62e21653881027a11d81128b8649ff834669957f98","source":{"kind":"arxiv","id":"2009.03442","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2009.03442","created_at":"2026-07-05T01:41:19Z"},{"alias_kind":"arxiv_version","alias_value":"2009.03442v1","created_at":"2026-07-05T01:41:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2009.03442","created_at":"2026-07-05T01:41:19Z"},{"alias_kind":"pith_short_12","alias_value":"GRLJOJAGBMHG","created_at":"2026-07-05T01:41:19Z"},{"alias_kind":"pith_short_16","alias_value":"GRLJOJAGBMHG26NL","created_at":"2026-07-05T01:41:19Z"},{"alias_kind":"pith_short_8","alias_value":"GRLJOJAG","created_at":"2026-07-05T01:41:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:GRLJOJAGBMHG26NLBRROEFSTRA","target":"record","payload":{"canonical_record":{"source":{"id":"2009.03442","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SP","submitted_at":"2020-09-07T22:08:08Z","cross_cats_sorted":["astro-ph.IM","physics.ins-det"],"title_canon_sha256":"a0e78c4584cbccab7f4b66bf35f31f3e3923b509ceb42ad7d58a0dea990ca84e","abstract_canon_sha256":"be8e127f39aacd5128fdd68e53da5e820e799b8d25f5b778b0e0b85eab3fd371"},"schema_version":"1.0"},"canonical_sha256":"34569724060b0e6d79ab0c62e21653881027a11d81128b8649ff834669957f98","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:41:19.899757Z","signature_b64":"+xA+YYRUQLUxaETQqsBFyyBgJlVN95ZsYiTaGxN3CuaGT/ycduElfGN7WDDU0gRaq7c4JB6GtOCMsOGZ8aJhCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"34569724060b0e6d79ab0c62e21653881027a11d81128b8649ff834669957f98","last_reissued_at":"2026-07-05T01:41:19.899274Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:41:19.899274Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2009.03442","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":"2026-07-05T01:41:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mYM1RRCrtEy2+w3aJ5/8GVzK+nrKD6ggfOUr3Z30LKmBvF7SA4xUYwk3yO4b+KvtKoxHm+ACni38nwjJdB/4BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T19:28:17.444371Z"},"content_sha256":"c543e94ec838a051ad6a718584cce9d439a676b39ac626b11960699d29dea009","schema_version":"1.0","event_id":"sha256:c543e94ec838a051ad6a718584cce9d439a676b39ac626b11960699d29dea009"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:GRLJOJAGBMHG26NLBRROEFSTRA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Machine learning-based method for linearization and error compensation of an absolute rotary encoder","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.IM","physics.ins-det"],"primary_cat":"eess.SP","authors_text":"Azhar Zam, Georg Rauter, Lorenzo Iafolla, Massimiliano Filipozzi, Philippe Claude Cattin, Sara Freund","submitted_at":"2020-09-07T22:08:08Z","abstract_excerpt":"The main objective of this work is to develop a miniaturized, high accuracy, single-turn absolute, rotary encoder called ASTRAS360. Its measurement principle is based on capturing an image that uniquely identifies the rotation angle. To evaluate this angle, the image first has to be classified into its sector based on its color, and only then can the angle be regressed. In-spired by machine learning, we built a calibration setup, able to generate labeled training data automatically. We used these training data to test, characterize, and compare several machine learning algorithms for the class"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2009.03442","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/2009.03442/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":"2026-07-05T01:41:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+NE6f7ORAVxG8Zbl4otbvZKKDKdJ8VuYUinjBsbZ1m2X3SWrQ6vyxuO0BQVvUGgPFXZu011S7Pdk72CG5NYbBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T19:28:17.445309Z"},"content_sha256":"c98f38f76e83fe52e8517cbab50a6ef373bf7da490b49d53a7b65fe66cfc87c9","schema_version":"1.0","event_id":"sha256:c98f38f76e83fe52e8517cbab50a6ef373bf7da490b49d53a7b65fe66cfc87c9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GRLJOJAGBMHG26NLBRROEFSTRA/bundle.json","state_url":"https://pith.science/pith/GRLJOJAGBMHG26NLBRROEFSTRA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GRLJOJAGBMHG26NLBRROEFSTRA/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":"2026-08-03T19:28:17Z","links":{"resolver":"https://pith.science/pith/GRLJOJAGBMHG26NLBRROEFSTRA","bundle":"https://pith.science/pith/GRLJOJAGBMHG26NLBRROEFSTRA/bundle.json","state":"https://pith.science/pith/GRLJOJAGBMHG26NLBRROEFSTRA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GRLJOJAGBMHG26NLBRROEFSTRA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:GRLJOJAGBMHG26NLBRROEFSTRA","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":"be8e127f39aacd5128fdd68e53da5e820e799b8d25f5b778b0e0b85eab3fd371","cross_cats_sorted":["astro-ph.IM","physics.ins-det"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SP","submitted_at":"2020-09-07T22:08:08Z","title_canon_sha256":"a0e78c4584cbccab7f4b66bf35f31f3e3923b509ceb42ad7d58a0dea990ca84e"},"schema_version":"1.0","source":{"id":"2009.03442","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2009.03442","created_at":"2026-07-05T01:41:19Z"},{"alias_kind":"arxiv_version","alias_value":"2009.03442v1","created_at":"2026-07-05T01:41:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2009.03442","created_at":"2026-07-05T01:41:19Z"},{"alias_kind":"pith_short_12","alias_value":"GRLJOJAGBMHG","created_at":"2026-07-05T01:41:19Z"},{"alias_kind":"pith_short_16","alias_value":"GRLJOJAGBMHG26NL","created_at":"2026-07-05T01:41:19Z"},{"alias_kind":"pith_short_8","alias_value":"GRLJOJAG","created_at":"2026-07-05T01:41:19Z"}],"graph_snapshots":[{"event_id":"sha256:c98f38f76e83fe52e8517cbab50a6ef373bf7da490b49d53a7b65fe66cfc87c9","target":"graph","created_at":"2026-07-05T01:41:19Z","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/2009.03442/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The main objective of this work is to develop a miniaturized, high accuracy, single-turn absolute, rotary encoder called ASTRAS360. Its measurement principle is based on capturing an image that uniquely identifies the rotation angle. To evaluate this angle, the image first has to be classified into its sector based on its color, and only then can the angle be regressed. In-spired by machine learning, we built a calibration setup, able to generate labeled training data automatically. We used these training data to test, characterize, and compare several machine learning algorithms for the class","authors_text":"Azhar Zam, Georg Rauter, Lorenzo Iafolla, Massimiliano Filipozzi, Philippe Claude Cattin, Sara Freund","cross_cats":["astro-ph.IM","physics.ins-det"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SP","submitted_at":"2020-09-07T22:08:08Z","title":"Machine learning-based method for linearization and error compensation of an absolute rotary encoder"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2009.03442","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:c543e94ec838a051ad6a718584cce9d439a676b39ac626b11960699d29dea009","target":"record","created_at":"2026-07-05T01:41:19Z","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":"be8e127f39aacd5128fdd68e53da5e820e799b8d25f5b778b0e0b85eab3fd371","cross_cats_sorted":["astro-ph.IM","physics.ins-det"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SP","submitted_at":"2020-09-07T22:08:08Z","title_canon_sha256":"a0e78c4584cbccab7f4b66bf35f31f3e3923b509ceb42ad7d58a0dea990ca84e"},"schema_version":"1.0","source":{"id":"2009.03442","kind":"arxiv","version":1}},"canonical_sha256":"34569724060b0e6d79ab0c62e21653881027a11d81128b8649ff834669957f98","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"34569724060b0e6d79ab0c62e21653881027a11d81128b8649ff834669957f98","first_computed_at":"2026-07-05T01:41:19.899274Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:41:19.899274Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+xA+YYRUQLUxaETQqsBFyyBgJlVN95ZsYiTaGxN3CuaGT/ycduElfGN7WDDU0gRaq7c4JB6GtOCMsOGZ8aJhCA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:41:19.899757Z","signed_message":"canonical_sha256_bytes"},"source_id":"2009.03442","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c543e94ec838a051ad6a718584cce9d439a676b39ac626b11960699d29dea009","sha256:c98f38f76e83fe52e8517cbab50a6ef373bf7da490b49d53a7b65fe66cfc87c9"],"state_sha256":"b860dc54b7aad31ac534fcfeb44007ac32e43a23cbb73c3e9e337e67beb9632a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MuuIl/rn5NEDG9y1nIJJ2C8WxHtOt3Msu3/J4VAwhY/ga+bVN1a6E2pc5I9iACzamgVzrpv86bfyvEG+xg2sBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T19:28:17.450454Z","bundle_sha256":"b23acd77546b641b2ea6c9886fd5de1815d523a9ff0a969f514e71c70e9423ce"}}