{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:GL5XL2B7JQA6DH6WZYIBPSGNCM","short_pith_number":"pith:GL5XL2B7","canonical_record":{"source":{"id":"2404.08286","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2024-04-12T07:21:11Z","cross_cats_sorted":[],"title_canon_sha256":"314cafbd2b43a91fec569e134e624dfbf07fa5b6f6cec0aceabfe32d387bc910","abstract_canon_sha256":"1dfa77751a878bcc3211b6910c051ac6bfcb53c2e67305ff2af7cc8fa672a1bf"},"schema_version":"1.0"},"canonical_sha256":"32fb75e83f4c01e19fd6ce1017c8cd13212895e7e3f29d659fcb585f421fb30b","source":{"kind":"arxiv","id":"2404.08286","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.08286","created_at":"2026-07-05T08:07:20Z"},{"alias_kind":"arxiv_version","alias_value":"2404.08286v1","created_at":"2026-07-05T08:07:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.08286","created_at":"2026-07-05T08:07:20Z"},{"alias_kind":"pith_short_12","alias_value":"GL5XL2B7JQA6","created_at":"2026-07-05T08:07:20Z"},{"alias_kind":"pith_short_16","alias_value":"GL5XL2B7JQA6DH6W","created_at":"2026-07-05T08:07:20Z"},{"alias_kind":"pith_short_8","alias_value":"GL5XL2B7","created_at":"2026-07-05T08:07:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:GL5XL2B7JQA6DH6WZYIBPSGNCM","target":"record","payload":{"canonical_record":{"source":{"id":"2404.08286","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2024-04-12T07:21:11Z","cross_cats_sorted":[],"title_canon_sha256":"314cafbd2b43a91fec569e134e624dfbf07fa5b6f6cec0aceabfe32d387bc910","abstract_canon_sha256":"1dfa77751a878bcc3211b6910c051ac6bfcb53c2e67305ff2af7cc8fa672a1bf"},"schema_version":"1.0"},"canonical_sha256":"32fb75e83f4c01e19fd6ce1017c8cd13212895e7e3f29d659fcb585f421fb30b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:07:20.199435Z","signature_b64":"PGC8/KeWcb5zUT/03symhKNlhOqsRdeLkUdTw4z6XhbAA0JzRg3NrxUwN8TctBcBoNylmt7IZrE/lzoocVqmDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"32fb75e83f4c01e19fd6ce1017c8cd13212895e7e3f29d659fcb585f421fb30b","last_reissued_at":"2026-07-05T08:07:20.198952Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:07:20.198952Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2404.08286","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":"2026-07-05T08:07:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QBLEa7JVQyJ0XysCkhn0bYX03y+rwFM3/zoXasB9GxtHdlZ9LGbiGo6qqPQQBgq7K0E+AymrSM1bsRnzdOC7CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T00:20:08.373711Z"},"content_sha256":"94f82212e0ea3a35860164dabbea553e7d079f8212cf652d4ba97efde84ec79f","schema_version":"1.0","event_id":"sha256:94f82212e0ea3a35860164dabbea553e7d079f8212cf652d4ba97efde84ec79f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:GL5XL2B7JQA6DH6WZYIBPSGNCM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Energy-modified Leverage Sampling for Radio Map Construction via Matrix Completion","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"eess.SP","authors_text":"Hao Sun, Junting Chen","submitted_at":"2024-04-12T07:21:11Z","abstract_excerpt":"This paper explores an energy-modified leverage sampling strategy for matrix completion in radio map construction. The main goal is to address potential identifiability issues in matrix completion with sparse observations by using a probabilistic sampling approach. Although conventional leverage sampling is commonly employed for designing sampling patterns, it often assigns high sampling probability to locations with low received signal strength (RSS) values, leading to a low sampling efficiency. Theoretical analysis demonstrates that the leverage score produces pseudo images of sources, and i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.08286","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/2404.08286/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":"2026-07-05T08:07:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5NbHoY8oURtie7MWoA5qXEBz8jij2AG78QJJI509CeQO6OxkM2qPQTR/4oj1ge57ZbgRprpuEU9I0Lx3pKSjCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T00:20:08.374245Z"},"content_sha256":"40ef1c516f74c2de8e482c228e83ca3c544e6bf855c08cc62be8147149550031","schema_version":"1.0","event_id":"sha256:40ef1c516f74c2de8e482c228e83ca3c544e6bf855c08cc62be8147149550031"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GL5XL2B7JQA6DH6WZYIBPSGNCM/bundle.json","state_url":"https://pith.science/pith/GL5XL2B7JQA6DH6WZYIBPSGNCM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GL5XL2B7JQA6DH6WZYIBPSGNCM/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":"2026-08-09T00:20:08Z","links":{"resolver":"https://pith.science/pith/GL5XL2B7JQA6DH6WZYIBPSGNCM","bundle":"https://pith.science/pith/GL5XL2B7JQA6DH6WZYIBPSGNCM/bundle.json","state":"https://pith.science/pith/GL5XL2B7JQA6DH6WZYIBPSGNCM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GL5XL2B7JQA6DH6WZYIBPSGNCM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:GL5XL2B7JQA6DH6WZYIBPSGNCM","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":"1dfa77751a878bcc3211b6910c051ac6bfcb53c2e67305ff2af7cc8fa672a1bf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2024-04-12T07:21:11Z","title_canon_sha256":"314cafbd2b43a91fec569e134e624dfbf07fa5b6f6cec0aceabfe32d387bc910"},"schema_version":"1.0","source":{"id":"2404.08286","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.08286","created_at":"2026-07-05T08:07:20Z"},{"alias_kind":"arxiv_version","alias_value":"2404.08286v1","created_at":"2026-07-05T08:07:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.08286","created_at":"2026-07-05T08:07:20Z"},{"alias_kind":"pith_short_12","alias_value":"GL5XL2B7JQA6","created_at":"2026-07-05T08:07:20Z"},{"alias_kind":"pith_short_16","alias_value":"GL5XL2B7JQA6DH6W","created_at":"2026-07-05T08:07:20Z"},{"alias_kind":"pith_short_8","alias_value":"GL5XL2B7","created_at":"2026-07-05T08:07:20Z"}],"graph_snapshots":[{"event_id":"sha256:40ef1c516f74c2de8e482c228e83ca3c544e6bf855c08cc62be8147149550031","target":"graph","created_at":"2026-07-05T08:07:20Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2404.08286/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This paper explores an energy-modified leverage sampling strategy for matrix completion in radio map construction. The main goal is to address potential identifiability issues in matrix completion with sparse observations by using a probabilistic sampling approach. Although conventional leverage sampling is commonly employed for designing sampling patterns, it often assigns high sampling probability to locations with low received signal strength (RSS) values, leading to a low sampling efficiency. Theoretical analysis demonstrates that the leverage score produces pseudo images of sources, and i","authors_text":"Hao Sun, Junting Chen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2024-04-12T07:21:11Z","title":"Energy-modified Leverage Sampling for Radio Map Construction via Matrix Completion"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.08286","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":"sha256:94f82212e0ea3a35860164dabbea553e7d079f8212cf652d4ba97efde84ec79f","target":"record","created_at":"2026-07-05T08:07:20Z","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":"1dfa77751a878bcc3211b6910c051ac6bfcb53c2e67305ff2af7cc8fa672a1bf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2024-04-12T07:21:11Z","title_canon_sha256":"314cafbd2b43a91fec569e134e624dfbf07fa5b6f6cec0aceabfe32d387bc910"},"schema_version":"1.0","source":{"id":"2404.08286","kind":"arxiv","version":1}},"canonical_sha256":"32fb75e83f4c01e19fd6ce1017c8cd13212895e7e3f29d659fcb585f421fb30b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"32fb75e83f4c01e19fd6ce1017c8cd13212895e7e3f29d659fcb585f421fb30b","first_computed_at":"2026-07-05T08:07:20.198952Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:07:20.198952Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PGC8/KeWcb5zUT/03symhKNlhOqsRdeLkUdTw4z6XhbAA0JzRg3NrxUwN8TctBcBoNylmt7IZrE/lzoocVqmDw==","signature_status":"signed_v1","signed_at":"2026-07-05T08:07:20.199435Z","signed_message":"canonical_sha256_bytes"},"source_id":"2404.08286","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:94f82212e0ea3a35860164dabbea553e7d079f8212cf652d4ba97efde84ec79f","sha256:40ef1c516f74c2de8e482c228e83ca3c544e6bf855c08cc62be8147149550031"],"state_sha256":"e2f573f05d250ba0c790c428a715e21cf887f1b8225f33dd898862b1aec27e29"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"O2/HdZDkBsipDizLHknHOoKQ0mwGIoILblda8dfOt/L/sEkWyCvm9FXlCZlgJXQ7cbV04cwvha3c4zr0v0m8Dg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-09T00:20:08.379166Z","bundle_sha256":"6027f73d08f6d2252eee542420f269f61e61a5261fd49b07dcfbc7e48c744d55"}}