{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:EP54AMQTM4XZV4REBQIQBMIOEY","short_pith_number":"pith:EP54AMQT","canonical_record":{"source":{"id":"2105.06460","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2021-05-13T17:56:18Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"b258b6f16ba844bada4a4b2db7a023adbcaa2865fac7c31b155193b700d2663b","abstract_canon_sha256":"4adbe8d6927ef6279c49c257dc5b508dc90803a2c1ef9b6edbd08318e54b2907"},"schema_version":"1.0"},"canonical_sha256":"23fbc03213672f9af2240c1100b10e2623f23918c165b85fcb7186a586762dd7","source":{"kind":"arxiv","id":"2105.06460","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.06460","created_at":"2026-07-05T04:43:56Z"},{"alias_kind":"arxiv_version","alias_value":"2105.06460v2","created_at":"2026-07-05T04:43:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.06460","created_at":"2026-07-05T04:43:56Z"},{"alias_kind":"pith_short_12","alias_value":"EP54AMQTM4XZ","created_at":"2026-07-05T04:43:56Z"},{"alias_kind":"pith_short_16","alias_value":"EP54AMQTM4XZV4RE","created_at":"2026-07-05T04:43:56Z"},{"alias_kind":"pith_short_8","alias_value":"EP54AMQT","created_at":"2026-07-05T04:43:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:EP54AMQTM4XZV4REBQIQBMIOEY","target":"record","payload":{"canonical_record":{"source":{"id":"2105.06460","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2021-05-13T17:56:18Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"b258b6f16ba844bada4a4b2db7a023adbcaa2865fac7c31b155193b700d2663b","abstract_canon_sha256":"4adbe8d6927ef6279c49c257dc5b508dc90803a2c1ef9b6edbd08318e54b2907"},"schema_version":"1.0"},"canonical_sha256":"23fbc03213672f9af2240c1100b10e2623f23918c165b85fcb7186a586762dd7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:43:56.739449Z","signature_b64":"qkBlSP4vSo2SOEME4f1simwafKU26Bp+W398wVy3MWQU5nIR9iMHYL/+WjTy7Pn3/Go1E9rT8zCKNhL5NKnQDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"23fbc03213672f9af2240c1100b10e2623f23918c165b85fcb7186a586762dd7","last_reissued_at":"2026-07-05T04:43:56.738910Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:43:56.738910Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2105.06460","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T04:43:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0eum1vou5CA46WB/Wao333sXAR+Qi3RLrMcinfFMPLZeGa4TfRUtXgqKHOGBNzmX+yPRVAcj4iRHdT2t3rk6AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T20:30:01.536724Z"},"content_sha256":"b0d30317209e2bdc927e8a35a53d19d3f70a45040074104e7e8da6b792b44477","schema_version":"1.0","event_id":"sha256:b0d30317209e2bdc927e8a35a53d19d3f70a45040074104e7e8da6b792b44477"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:EP54AMQTM4XZV4REBQIQBMIOEY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"End-to-End Sequential Sampling and Reconstruction for MRI","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CV"],"primary_cat":"eess.IV","authors_text":"Adrian V. Dalca, He Sun, Katherine L. Bouman, Tianwei Yin, Yisong Yue, Zihui Wu","submitted_at":"2021-05-13T17:56:18Z","abstract_excerpt":"Accelerated MRI shortens acquisition time by subsampling in the measurement $\\kappa$-space. Recovering a high-fidelity anatomical image from subsampled measurements requires close cooperation between two components: (1) a sampler that chooses the subsampling pattern and (2) a reconstructor that recovers images from incomplete measurements. In this paper, we leverage the sequential nature of MRI measurements, and propose a fully differentiable framework that jointly learns a sequential sampling policy simultaneously with a reconstruction strategy. This co-designed framework is able to adapt dur"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.06460","kind":"arxiv","version":2},"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/2105.06460/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":"2026-07-05T04:43:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"68KhQwSx9aiklsfIEO5ny96Wc6dv+u/3DFnIdsJUKiOnVGB5YkPaUqz8qUyCzSOF8QuBfoMh2gR4ksQtbRhEAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T20:30:01.537375Z"},"content_sha256":"a569565bdc6dfb9beaa87e718e4e9ca9d096d9d1505afdac918a276e4ab6e517","schema_version":"1.0","event_id":"sha256:a569565bdc6dfb9beaa87e718e4e9ca9d096d9d1505afdac918a276e4ab6e517"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EP54AMQTM4XZV4REBQIQBMIOEY/bundle.json","state_url":"https://pith.science/pith/EP54AMQTM4XZV4REBQIQBMIOEY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EP54AMQTM4XZV4REBQIQBMIOEY/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":"2026-08-13T20:30:01Z","links":{"resolver":"https://pith.science/pith/EP54AMQTM4XZV4REBQIQBMIOEY","bundle":"https://pith.science/pith/EP54AMQTM4XZV4REBQIQBMIOEY/bundle.json","state":"https://pith.science/pith/EP54AMQTM4XZV4REBQIQBMIOEY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EP54AMQTM4XZV4REBQIQBMIOEY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:EP54AMQTM4XZV4REBQIQBMIOEY","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":"4adbe8d6927ef6279c49c257dc5b508dc90803a2c1ef9b6edbd08318e54b2907","cross_cats_sorted":["cs.CV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2021-05-13T17:56:18Z","title_canon_sha256":"b258b6f16ba844bada4a4b2db7a023adbcaa2865fac7c31b155193b700d2663b"},"schema_version":"1.0","source":{"id":"2105.06460","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.06460","created_at":"2026-07-05T04:43:56Z"},{"alias_kind":"arxiv_version","alias_value":"2105.06460v2","created_at":"2026-07-05T04:43:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.06460","created_at":"2026-07-05T04:43:56Z"},{"alias_kind":"pith_short_12","alias_value":"EP54AMQTM4XZ","created_at":"2026-07-05T04:43:56Z"},{"alias_kind":"pith_short_16","alias_value":"EP54AMQTM4XZV4RE","created_at":"2026-07-05T04:43:56Z"},{"alias_kind":"pith_short_8","alias_value":"EP54AMQT","created_at":"2026-07-05T04:43:56Z"}],"graph_snapshots":[{"event_id":"sha256:a569565bdc6dfb9beaa87e718e4e9ca9d096d9d1505afdac918a276e4ab6e517","target":"graph","created_at":"2026-07-05T04:43:56Z","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/2105.06460/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Accelerated MRI shortens acquisition time by subsampling in the measurement $\\kappa$-space. Recovering a high-fidelity anatomical image from subsampled measurements requires close cooperation between two components: (1) a sampler that chooses the subsampling pattern and (2) a reconstructor that recovers images from incomplete measurements. In this paper, we leverage the sequential nature of MRI measurements, and propose a fully differentiable framework that jointly learns a sequential sampling policy simultaneously with a reconstruction strategy. This co-designed framework is able to adapt dur","authors_text":"Adrian V. Dalca, He Sun, Katherine L. Bouman, Tianwei Yin, Yisong Yue, Zihui Wu","cross_cats":["cs.CV"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2021-05-13T17:56:18Z","title":"End-to-End Sequential Sampling and Reconstruction for MRI"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.06460","kind":"arxiv","version":2},"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:b0d30317209e2bdc927e8a35a53d19d3f70a45040074104e7e8da6b792b44477","target":"record","created_at":"2026-07-05T04:43:56Z","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":"4adbe8d6927ef6279c49c257dc5b508dc90803a2c1ef9b6edbd08318e54b2907","cross_cats_sorted":["cs.CV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2021-05-13T17:56:18Z","title_canon_sha256":"b258b6f16ba844bada4a4b2db7a023adbcaa2865fac7c31b155193b700d2663b"},"schema_version":"1.0","source":{"id":"2105.06460","kind":"arxiv","version":2}},"canonical_sha256":"23fbc03213672f9af2240c1100b10e2623f23918c165b85fcb7186a586762dd7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"23fbc03213672f9af2240c1100b10e2623f23918c165b85fcb7186a586762dd7","first_computed_at":"2026-07-05T04:43:56.738910Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:43:56.738910Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qkBlSP4vSo2SOEME4f1simwafKU26Bp+W398wVy3MWQU5nIR9iMHYL/+WjTy7Pn3/Go1E9rT8zCKNhL5NKnQDA==","signature_status":"signed_v1","signed_at":"2026-07-05T04:43:56.739449Z","signed_message":"canonical_sha256_bytes"},"source_id":"2105.06460","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b0d30317209e2bdc927e8a35a53d19d3f70a45040074104e7e8da6b792b44477","sha256:a569565bdc6dfb9beaa87e718e4e9ca9d096d9d1505afdac918a276e4ab6e517"],"state_sha256":"0687f8d6a55d5131deea5c5f19ddcecb0ff52384d3e7b71ed7a05fcff3e61a1a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DpCXmCGthEUuombiN1z4fG2J4Ltf6ERXADSU+CmXeyF61avpFBbUK6MpBz8sBX36oyBGe93S10CnRaoT9Rz7BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-13T20:30:01.557532Z","bundle_sha256":"825b98d328722979b8ab66691bed676d1b186e12112d942eabbaf9c09bcbffba"}}