{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:2TQUDWQBDIY36732WBYBJGY57B","short_pith_number":"pith:2TQUDWQB","canonical_record":{"source":{"id":"1205.4332","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2012-05-19T14:54:02Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"7592baf0c478a9802d4642f212c9ed27c4d1a9042a9999e53f6f5ed8ed92e437","abstract_canon_sha256":"ca22f94dd8a22bb1ea020a5a032cd98fbfeb22c5e30f12b2f52975d4c0a4e6bc"},"schema_version":"1.0"},"canonical_sha256":"d4e141da011a31bf7f7ab070149b1df851e05d0a730ebf53494e49987fd3c3cd","source":{"kind":"arxiv","id":"1205.4332","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.4332","created_at":"2026-05-18T03:54:36Z"},{"alias_kind":"arxiv_version","alias_value":"1205.4332v2","created_at":"2026-05-18T03:54:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.4332","created_at":"2026-05-18T03:54:36Z"},{"alias_kind":"pith_short_12","alias_value":"2TQUDWQBDIY3","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_16","alias_value":"2TQUDWQBDIY36732","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_8","alias_value":"2TQUDWQB","created_at":"2026-05-18T12:26:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:2TQUDWQBDIY36732WBYBJGY57B","target":"record","payload":{"canonical_record":{"source":{"id":"1205.4332","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2012-05-19T14:54:02Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"7592baf0c478a9802d4642f212c9ed27c4d1a9042a9999e53f6f5ed8ed92e437","abstract_canon_sha256":"ca22f94dd8a22bb1ea020a5a032cd98fbfeb22c5e30f12b2f52975d4c0a4e6bc"},"schema_version":"1.0"},"canonical_sha256":"d4e141da011a31bf7f7ab070149b1df851e05d0a730ebf53494e49987fd3c3cd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:54:36.959774Z","signature_b64":"/HGksA+2gsYYtt4xIYfxFLKBUYkz0ZnwtE/6VXiwxhNcSTaJNCLVwrXWBiCHgLJa4Qxxrm+HCkRZltfVBSN0Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d4e141da011a31bf7f7ab070149b1df851e05d0a730ebf53494e49987fd3c3cd","last_reissued_at":"2026-05-18T03:54:36.959098Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:54:36.959098Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1205.4332","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":"2026-05-18T03:54:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AxIMA5uGeIz7rQIPC1T3jYVO0ZsTYQ6NFC6To8lTcW1LDUSZTC6mLb/EcXviwIs92VB9wJLg/C0bXL1VuDocDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T22:37:41.652928Z"},"content_sha256":"2940bfaf9a3ae68bbf9085ed3e86b46cc51e4aed4c32cd5b40d0ec59bd5ad2de","schema_version":"1.0","event_id":"sha256:2940bfaf9a3ae68bbf9085ed3e86b46cc51e4aed4c32cd5b40d0ec59bd5ad2de"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:2TQUDWQBDIY36732WBYBJGY57B","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Graph-based Code Design for Quadratic-Gaussian Wyner-Ziv Problem with Arbitrary Side Information","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Hsuan-Jung Su, Shih-Chun Lin, Yi-Peng Wei, Yu-Hsiu Lin","submitted_at":"2012-05-19T14:54:02Z","abstract_excerpt":"Wyner-Ziv coding (WZC) is a compression technique using decoder side information, which is unknown at the encoder, to help the reconstruction. In this paper, we propose and implement a new WZC structure, called residual WZC, for the quadratic-Gaussian Wyner-Ziv problem where side information can be arbitrarily distributed. In our two-stage residual WZC, the source is quantized twice and the input of the second stage is the quantization error (residue) of the first stage. The codebook of the first stage quantizer must be simultaneously good for source and channel coding, since it also acts as a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.4332","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":""},"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":"2026-05-18T03:54:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vZP0da86xFLte4e09XSy6UM+/FGZM6ckPczVTNMpNTorjoziROjMF9w29Z1f4YG0QpG82eGwxfOIAoB8V5dBDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T22:37:41.653286Z"},"content_sha256":"39086d68869f933c45d41a835710ae42c7042864454ca3cd72d037805880010e","schema_version":"1.0","event_id":"sha256:39086d68869f933c45d41a835710ae42c7042864454ca3cd72d037805880010e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2TQUDWQBDIY36732WBYBJGY57B/bundle.json","state_url":"https://pith.science/pith/2TQUDWQBDIY36732WBYBJGY57B/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2TQUDWQBDIY36732WBYBJGY57B/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":"2026-06-01T22:37:41Z","links":{"resolver":"https://pith.science/pith/2TQUDWQBDIY36732WBYBJGY57B","bundle":"https://pith.science/pith/2TQUDWQBDIY36732WBYBJGY57B/bundle.json","state":"https://pith.science/pith/2TQUDWQBDIY36732WBYBJGY57B/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2TQUDWQBDIY36732WBYBJGY57B/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:2TQUDWQBDIY36732WBYBJGY57B","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":"ca22f94dd8a22bb1ea020a5a032cd98fbfeb22c5e30f12b2f52975d4c0a4e6bc","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2012-05-19T14:54:02Z","title_canon_sha256":"7592baf0c478a9802d4642f212c9ed27c4d1a9042a9999e53f6f5ed8ed92e437"},"schema_version":"1.0","source":{"id":"1205.4332","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.4332","created_at":"2026-05-18T03:54:36Z"},{"alias_kind":"arxiv_version","alias_value":"1205.4332v2","created_at":"2026-05-18T03:54:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.4332","created_at":"2026-05-18T03:54:36Z"},{"alias_kind":"pith_short_12","alias_value":"2TQUDWQBDIY3","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_16","alias_value":"2TQUDWQBDIY36732","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_8","alias_value":"2TQUDWQB","created_at":"2026-05-18T12:26:50Z"}],"graph_snapshots":[{"event_id":"sha256:39086d68869f933c45d41a835710ae42c7042864454ca3cd72d037805880010e","target":"graph","created_at":"2026-05-18T03:54:36Z","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":"Wyner-Ziv coding (WZC) is a compression technique using decoder side information, which is unknown at the encoder, to help the reconstruction. In this paper, we propose and implement a new WZC structure, called residual WZC, for the quadratic-Gaussian Wyner-Ziv problem where side information can be arbitrarily distributed. In our two-stage residual WZC, the source is quantized twice and the input of the second stage is the quantization error (residue) of the first stage. The codebook of the first stage quantizer must be simultaneously good for source and channel coding, since it also acts as a","authors_text":"Hsuan-Jung Su, Shih-Chun Lin, Yi-Peng Wei, Yu-Hsiu Lin","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2012-05-19T14:54:02Z","title":"Graph-based Code Design for Quadratic-Gaussian Wyner-Ziv Problem with Arbitrary Side Information"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.4332","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":"sha256:2940bfaf9a3ae68bbf9085ed3e86b46cc51e4aed4c32cd5b40d0ec59bd5ad2de","target":"record","created_at":"2026-05-18T03:54:36Z","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":"ca22f94dd8a22bb1ea020a5a032cd98fbfeb22c5e30f12b2f52975d4c0a4e6bc","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2012-05-19T14:54:02Z","title_canon_sha256":"7592baf0c478a9802d4642f212c9ed27c4d1a9042a9999e53f6f5ed8ed92e437"},"schema_version":"1.0","source":{"id":"1205.4332","kind":"arxiv","version":2}},"canonical_sha256":"d4e141da011a31bf7f7ab070149b1df851e05d0a730ebf53494e49987fd3c3cd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d4e141da011a31bf7f7ab070149b1df851e05d0a730ebf53494e49987fd3c3cd","first_computed_at":"2026-05-18T03:54:36.959098Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:54:36.959098Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/HGksA+2gsYYtt4xIYfxFLKBUYkz0ZnwtE/6VXiwxhNcSTaJNCLVwrXWBiCHgLJa4Qxxrm+HCkRZltfVBSN0Cg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:54:36.959774Z","signed_message":"canonical_sha256_bytes"},"source_id":"1205.4332","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2940bfaf9a3ae68bbf9085ed3e86b46cc51e4aed4c32cd5b40d0ec59bd5ad2de","sha256:39086d68869f933c45d41a835710ae42c7042864454ca3cd72d037805880010e"],"state_sha256":"821e98127dad15fdff1c5a7d323f31b806ea99661896370575517772b36e82ae"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oe6gNMg3ooh0zKcxOk2tifm7X/FFmENuAQSCpBjwi71EnAj22v7cAnFmg/vgLlKamfH3H65+ghpqdXQLxswBAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T22:37:41.655181Z","bundle_sha256":"5201d7cdf74b70f1e5e8e9d581f51a9ba9509fbdf13b34bf6ffe906e852c025b"}}