{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:4SNKXRGWGS7M77HZIVMC4XRGF6","short_pith_number":"pith:4SNKXRGW","canonical_record":{"source":{"id":"1711.02046","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2017-11-03T16:17:50Z","cross_cats_sorted":["cs.IT","cs.SI","math.IT"],"title_canon_sha256":"d59db4345a6b56a1631364d1ebc7b81766644cb30a9741c9900237daab8c03ab","abstract_canon_sha256":"0ab041c43fa2fd210977b5c914917acbb925557e8a561213077fc6036c1615f5"},"schema_version":"1.0"},"canonical_sha256":"e49aabc4d634becffcf945582e5e262f9420e2ca108e524f2f338eb45cbb2037","source":{"kind":"arxiv","id":"1711.02046","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.02046","created_at":"2026-05-18T00:31:14Z"},{"alias_kind":"arxiv_version","alias_value":"1711.02046v1","created_at":"2026-05-18T00:31:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.02046","created_at":"2026-05-18T00:31:14Z"},{"alias_kind":"pith_short_12","alias_value":"4SNKXRGWGS7M","created_at":"2026-05-18T12:31:00Z"},{"alias_kind":"pith_short_16","alias_value":"4SNKXRGWGS7M77HZ","created_at":"2026-05-18T12:31:00Z"},{"alias_kind":"pith_short_8","alias_value":"4SNKXRGW","created_at":"2026-05-18T12:31:00Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:4SNKXRGWGS7M77HZIVMC4XRGF6","target":"record","payload":{"canonical_record":{"source":{"id":"1711.02046","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2017-11-03T16:17:50Z","cross_cats_sorted":["cs.IT","cs.SI","math.IT"],"title_canon_sha256":"d59db4345a6b56a1631364d1ebc7b81766644cb30a9741c9900237daab8c03ab","abstract_canon_sha256":"0ab041c43fa2fd210977b5c914917acbb925557e8a561213077fc6036c1615f5"},"schema_version":"1.0"},"canonical_sha256":"e49aabc4d634becffcf945582e5e262f9420e2ca108e524f2f338eb45cbb2037","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:31:14.517238Z","signature_b64":"xno6PjbdJf/B+1chltDzGM1cxuFIQ2H/1qtB1FexRetWIGjP2Dgqb7uTymPDnMJCQoDoQ3jJt9NRoGyFQA5YAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e49aabc4d634becffcf945582e5e262f9420e2ca108e524f2f338eb45cbb2037","last_reissued_at":"2026-05-18T00:31:14.516648Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:31:14.516648Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1711.02046","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":"2026-05-18T00:31:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HbjIwqWc1bAsffl3u2OjYgFbnPIiJ6nvwykI2RQZpUipOf7aLVa9HBtj+M7b1s7mxyi/d9FRuRtLJVOHn6A8Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T15:51:33.512652Z"},"content_sha256":"2bfb919e82c8efc7e837f9a130efe1e6064198d560f6e749bd40a741a6151b1c","schema_version":"1.0","event_id":"sha256:2bfb919e82c8efc7e837f9a130efe1e6064198d560f6e749bd40a741a6151b1c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:4SNKXRGWGS7M77HZIVMC4XRGF6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Design of graph filters and filterbanks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.IT","cs.SI","math.IT"],"primary_cat":"eess.SP","authors_text":"Nicolas Tremblay, Paulo Gon\\c{c}alves, Pierre Borgnat","submitted_at":"2017-11-03T16:17:50Z","abstract_excerpt":"Basic operations in graph signal processing consist in processing signals indexed on graphs either by filtering them, to extract specific part out of them, or by changing their domain of representation, using some transformation or dictionary more adapted to represent the information contained in them. The aim of this chapter is to review general concepts for the introduction of filters and representations of graph signals. We first begin by recalling the general framework to achieve that, which put the emphasis on introducing some spectral domain that is relevant for graph signals to define a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.02046","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":"2026-05-18T00:31:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6lHZVzs9FOM7CcfGQHEe2hcCoi4fUi1OkCIW35syI9JXjsR9YNyiGyaMYmDVzd/ngnku24C941FcbqYB/hRvBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T15:51:33.513303Z"},"content_sha256":"6ba1e2568df5eb8acdea1d3cbc31a80583f417739dc29d3cf529b3d6186c8eba","schema_version":"1.0","event_id":"sha256:6ba1e2568df5eb8acdea1d3cbc31a80583f417739dc29d3cf529b3d6186c8eba"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4SNKXRGWGS7M77HZIVMC4XRGF6/bundle.json","state_url":"https://pith.science/pith/4SNKXRGWGS7M77HZIVMC4XRGF6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4SNKXRGWGS7M77HZIVMC4XRGF6/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":"2026-05-27T15:51:33Z","links":{"resolver":"https://pith.science/pith/4SNKXRGWGS7M77HZIVMC4XRGF6","bundle":"https://pith.science/pith/4SNKXRGWGS7M77HZIVMC4XRGF6/bundle.json","state":"https://pith.science/pith/4SNKXRGWGS7M77HZIVMC4XRGF6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4SNKXRGWGS7M77HZIVMC4XRGF6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:4SNKXRGWGS7M77HZIVMC4XRGF6","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":"0ab041c43fa2fd210977b5c914917acbb925557e8a561213077fc6036c1615f5","cross_cats_sorted":["cs.IT","cs.SI","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2017-11-03T16:17:50Z","title_canon_sha256":"d59db4345a6b56a1631364d1ebc7b81766644cb30a9741c9900237daab8c03ab"},"schema_version":"1.0","source":{"id":"1711.02046","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.02046","created_at":"2026-05-18T00:31:14Z"},{"alias_kind":"arxiv_version","alias_value":"1711.02046v1","created_at":"2026-05-18T00:31:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.02046","created_at":"2026-05-18T00:31:14Z"},{"alias_kind":"pith_short_12","alias_value":"4SNKXRGWGS7M","created_at":"2026-05-18T12:31:00Z"},{"alias_kind":"pith_short_16","alias_value":"4SNKXRGWGS7M77HZ","created_at":"2026-05-18T12:31:00Z"},{"alias_kind":"pith_short_8","alias_value":"4SNKXRGW","created_at":"2026-05-18T12:31:00Z"}],"graph_snapshots":[{"event_id":"sha256:6ba1e2568df5eb8acdea1d3cbc31a80583f417739dc29d3cf529b3d6186c8eba","target":"graph","created_at":"2026-05-18T00:31:14Z","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":"Basic operations in graph signal processing consist in processing signals indexed on graphs either by filtering them, to extract specific part out of them, or by changing their domain of representation, using some transformation or dictionary more adapted to represent the information contained in them. The aim of this chapter is to review general concepts for the introduction of filters and representations of graph signals. We first begin by recalling the general framework to achieve that, which put the emphasis on introducing some spectral domain that is relevant for graph signals to define a","authors_text":"Nicolas Tremblay, Paulo Gon\\c{c}alves, Pierre Borgnat","cross_cats":["cs.IT","cs.SI","math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2017-11-03T16:17:50Z","title":"Design of graph filters and filterbanks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.02046","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":"sha256:2bfb919e82c8efc7e837f9a130efe1e6064198d560f6e749bd40a741a6151b1c","target":"record","created_at":"2026-05-18T00:31:14Z","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":"0ab041c43fa2fd210977b5c914917acbb925557e8a561213077fc6036c1615f5","cross_cats_sorted":["cs.IT","cs.SI","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2017-11-03T16:17:50Z","title_canon_sha256":"d59db4345a6b56a1631364d1ebc7b81766644cb30a9741c9900237daab8c03ab"},"schema_version":"1.0","source":{"id":"1711.02046","kind":"arxiv","version":1}},"canonical_sha256":"e49aabc4d634becffcf945582e5e262f9420e2ca108e524f2f338eb45cbb2037","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e49aabc4d634becffcf945582e5e262f9420e2ca108e524f2f338eb45cbb2037","first_computed_at":"2026-05-18T00:31:14.516648Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:31:14.516648Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xno6PjbdJf/B+1chltDzGM1cxuFIQ2H/1qtB1FexRetWIGjP2Dgqb7uTymPDnMJCQoDoQ3jJt9NRoGyFQA5YAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:31:14.517238Z","signed_message":"canonical_sha256_bytes"},"source_id":"1711.02046","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2bfb919e82c8efc7e837f9a130efe1e6064198d560f6e749bd40a741a6151b1c","sha256:6ba1e2568df5eb8acdea1d3cbc31a80583f417739dc29d3cf529b3d6186c8eba"],"state_sha256":"5c1c8288c1b94c16c59a826b86ee89997dfd557ec7cb3cbb450af04be0561012"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P9Bsg0VssLispoI4WX3S1A7KRI17wZw/fxSH7Ovep6DSskNlqDfiNbORtrJmdAjH5HjqP0Zm9ccJfbY7J4LwAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T15:51:33.516342Z","bundle_sha256":"a68d8be74ea6194ff04f2d8b5e8ce3afea8bdcdd1e598d07b588fcf7e0581ecc"}}