{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:TDQIM6LTMHVEHULUICLMKYAAFP","short_pith_number":"pith:TDQIM6LT","canonical_record":{"source":{"id":"1309.2505","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ML","submitted_at":"2013-09-10T13:38:16Z","cross_cats_sorted":["cs.IT","math.IT","math.ST","stat.TH"],"title_canon_sha256":"e5ab36603915f4464df222a8c405662739c1c28e3e61c5cf01f276940960a849","abstract_canon_sha256":"920aba8653d3a5e38f44c77bb222f3250cde7b9d89b0c1535728307442a830d6"},"schema_version":"1.0"},"canonical_sha256":"98e086797361ea43d1744096c560002becabc89079ffcb3464e528d01fd636c3","source":{"kind":"arxiv","id":"1309.2505","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1309.2505","created_at":"2026-05-18T03:13:44Z"},{"alias_kind":"arxiv_version","alias_value":"1309.2505v1","created_at":"2026-05-18T03:13:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.2505","created_at":"2026-05-18T03:13:44Z"},{"alias_kind":"pith_short_12","alias_value":"TDQIM6LTMHVE","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_16","alias_value":"TDQIM6LTMHVEHULU","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_8","alias_value":"TDQIM6LT","created_at":"2026-05-18T12:28:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:TDQIM6LTMHVEHULUICLMKYAAFP","target":"record","payload":{"canonical_record":{"source":{"id":"1309.2505","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ML","submitted_at":"2013-09-10T13:38:16Z","cross_cats_sorted":["cs.IT","math.IT","math.ST","stat.TH"],"title_canon_sha256":"e5ab36603915f4464df222a8c405662739c1c28e3e61c5cf01f276940960a849","abstract_canon_sha256":"920aba8653d3a5e38f44c77bb222f3250cde7b9d89b0c1535728307442a830d6"},"schema_version":"1.0"},"canonical_sha256":"98e086797361ea43d1744096c560002becabc89079ffcb3464e528d01fd636c3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:13:44.450033Z","signature_b64":"kJwr01MdMg/BzM1JeR+5BLtFlsif6L0npotQZXZ9dasU6HqZYmHbrWZRzcwy8UA/JZnfz8V88chaFiY+6vLXBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"98e086797361ea43d1744096c560002becabc89079ffcb3464e528d01fd636c3","last_reissued_at":"2026-05-18T03:13:44.449389Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:13:44.449389Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1309.2505","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":"2026-05-18T03:13:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ssE2pIrDJCDqZqBi2jsOG/0F2gZVHqlBZ9413hYQOV5nzQ5r4A16Kud3L4L6tvSeLvVQo/ybAgi9EosxpcRACw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T22:50:14.939505Z"},"content_sha256":"a3d5a6f295a54f6bb9508a06466d2320a1f42499ae14905e4133cc6bf6ec0f9e","schema_version":"1.0","event_id":"sha256:a3d5a6f295a54f6bb9508a06466d2320a1f42499ae14905e4133cc6bf6ec0f9e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:TDQIM6LTMHVEHULUICLMKYAAFP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Compressed Sensing for Block-Sparse Smooth Signals","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.IT","math.IT","math.ST","stat.TH"],"primary_cat":"stat.ML","authors_text":"Geert Leus, Shahzad Gishkori","submitted_at":"2013-09-10T13:38:16Z","abstract_excerpt":"We present reconstruction algorithms for smooth signals with block sparsity from their compressed measurements. We tackle the issue of varying group size via group-sparse least absolute shrinkage selection operator (LASSO) as well as via latent group LASSO regularizations. We achieve smoothness in the signal via fusion. We develop low-complexity solvers for our proposed formulations through the alternating direction method of multipliers."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.2505","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":""},"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":"2026-05-18T03:13:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FvMTxcsz5PBB3vffYdM1dcmHQ7xwxg1MV5I0Ldo7Ik585BuwflUHQsptb3gyvFGQf5x7pKB8apFuTJTAwqxHCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T22:50:14.939986Z"},"content_sha256":"14e6e886741395c8bb050355b0e99cb93fb74fb716c34ac721dc64d0fa64cfe3","schema_version":"1.0","event_id":"sha256:14e6e886741395c8bb050355b0e99cb93fb74fb716c34ac721dc64d0fa64cfe3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TDQIM6LTMHVEHULUICLMKYAAFP/bundle.json","state_url":"https://pith.science/pith/TDQIM6LTMHVEHULUICLMKYAAFP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TDQIM6LTMHVEHULUICLMKYAAFP/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":"2026-08-23T22:50:14Z","links":{"resolver":"https://pith.science/pith/TDQIM6LTMHVEHULUICLMKYAAFP","bundle":"https://pith.science/pith/TDQIM6LTMHVEHULUICLMKYAAFP/bundle.json","state":"https://pith.science/pith/TDQIM6LTMHVEHULUICLMKYAAFP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TDQIM6LTMHVEHULUICLMKYAAFP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:TDQIM6LTMHVEHULUICLMKYAAFP","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":"920aba8653d3a5e38f44c77bb222f3250cde7b9d89b0c1535728307442a830d6","cross_cats_sorted":["cs.IT","math.IT","math.ST","stat.TH"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ML","submitted_at":"2013-09-10T13:38:16Z","title_canon_sha256":"e5ab36603915f4464df222a8c405662739c1c28e3e61c5cf01f276940960a849"},"schema_version":"1.0","source":{"id":"1309.2505","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1309.2505","created_at":"2026-05-18T03:13:44Z"},{"alias_kind":"arxiv_version","alias_value":"1309.2505v1","created_at":"2026-05-18T03:13:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.2505","created_at":"2026-05-18T03:13:44Z"},{"alias_kind":"pith_short_12","alias_value":"TDQIM6LTMHVE","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_16","alias_value":"TDQIM6LTMHVEHULU","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_8","alias_value":"TDQIM6LT","created_at":"2026-05-18T12:28:02Z"}],"graph_snapshots":[{"event_id":"sha256:14e6e886741395c8bb050355b0e99cb93fb74fb716c34ac721dc64d0fa64cfe3","target":"graph","created_at":"2026-05-18T03:13:44Z","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 present reconstruction algorithms for smooth signals with block sparsity from their compressed measurements. We tackle the issue of varying group size via group-sparse least absolute shrinkage selection operator (LASSO) as well as via latent group LASSO regularizations. We achieve smoothness in the signal via fusion. We develop low-complexity solvers for our proposed formulations through the alternating direction method of multipliers.","authors_text":"Geert Leus, Shahzad Gishkori","cross_cats":["cs.IT","math.IT","math.ST","stat.TH"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ML","submitted_at":"2013-09-10T13:38:16Z","title":"Compressed Sensing for Block-Sparse Smooth Signals"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.2505","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:a3d5a6f295a54f6bb9508a06466d2320a1f42499ae14905e4133cc6bf6ec0f9e","target":"record","created_at":"2026-05-18T03:13:44Z","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":"920aba8653d3a5e38f44c77bb222f3250cde7b9d89b0c1535728307442a830d6","cross_cats_sorted":["cs.IT","math.IT","math.ST","stat.TH"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ML","submitted_at":"2013-09-10T13:38:16Z","title_canon_sha256":"e5ab36603915f4464df222a8c405662739c1c28e3e61c5cf01f276940960a849"},"schema_version":"1.0","source":{"id":"1309.2505","kind":"arxiv","version":1}},"canonical_sha256":"98e086797361ea43d1744096c560002becabc89079ffcb3464e528d01fd636c3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"98e086797361ea43d1744096c560002becabc89079ffcb3464e528d01fd636c3","first_computed_at":"2026-05-18T03:13:44.449389Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:13:44.449389Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kJwr01MdMg/BzM1JeR+5BLtFlsif6L0npotQZXZ9dasU6HqZYmHbrWZRzcwy8UA/JZnfz8V88chaFiY+6vLXBg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:13:44.450033Z","signed_message":"canonical_sha256_bytes"},"source_id":"1309.2505","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a3d5a6f295a54f6bb9508a06466d2320a1f42499ae14905e4133cc6bf6ec0f9e","sha256:14e6e886741395c8bb050355b0e99cb93fb74fb716c34ac721dc64d0fa64cfe3"],"state_sha256":"99df9220fcf96ec55004cd0282a8d5103ec2e06bee72179b6ddcbbc8970e7914"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U2eBRHwZn8DIBV3EnNDr7HbBZtNmZMF2ZvMY4dF0Mj7heE3ii/25XzIpa8wo91Eh40l8drEo9onreBuwTUhnDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-23T22:50:14.944555Z","bundle_sha256":"7ea76b7724b14918f5174336502726cc0b363a9ff0038c5ab3c6b42ab78e3fe9"}}