{"as_of":"2026-08-16T11:07:00Z","caps":{"database_statements":6,"inbound":100,"outbound":100},"context_digest":"sha256:2a764039b7df0df33c40c753d7fee3e7558dccfba8c47cd005dc0af122b0715a","coverage":[{"denominator":15,"lane":"reference_resolution","note":"Typed states for the displayed outbound observations.","records_observed":15,"source":"paper_references, paper_reference_links","source_observed_at":"2026-08-14T12:42:56.845621Z","state":"measured"},{"denominator":15,"lane":"standing_notices","note":"One-hop event checks from named stored sources.","records_observed":15,"source":"scholarly_work_events, retraction_status_cache","source_observed_at":"2026-08-16T06:30:59.297886+00:00","state":"measured"},{"denominator":0,"lane":"inbound_itemization","note":"Pith citing papers itemized under the disclosed page cap.","records_observed":0,"source":"paper_references, paper_reference_links","source_observed_at":null,"state":"measured"},{"denominator":1,"lane":"external_citation_measurements","note":"A source-named dated measurement, never combined with another source.","records_observed":0,"source":"cited_works","source_observed_at":null,"state":"measured"}],"external_citation_measurements":[],"inbound":[],"links":{"evidence":"/evidence","html":"/paper/1908.06672/citation-record","integrity":"/paper/1908.06672/integrity","json":"/paper/1908.06672/citation-record.json","paper":"/paper/1908.06672"},"outbound":[{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:42:56.968986Z","title":null,"venue":null,"work_id":"802c344d-bbad-48a4-8326-8514a371d8e0","year":1997},"citing_paper":{"arxiv_id":"1908.06672","last_updated":"2019-08-19T09:57:23Z","snapshot_observed_at":"2026-08-15T00:00:00.958277Z","submitted_at":"2019-08-19T09:57:23Z","title":"Graph Fourier Transform Based on $\\ell_1$ Norm Variation Minimization","version":1},"reference_index":1,"source":"pdf_text","source_observed_at":"2026-08-14T12:42:56.807671Z"},"links":{"citing_paper":"/paper/1908.06672"},"observation_digest":"sha256:0746f65a0861791a45912c331c90037ae5b0d3469be40d3b27c09cdef3167c47","observation_id":"94414f63-0ac2-49a5-99d9-2b102f84e137","resolution":{"observed_at":"2026-08-14T12:42:56.971515Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:42:56.961731Z","title":"The emerging ﬁeld of signal processing on graphs: Extending high-dimensional data analysis to networks and other irregular domains","venue":null,"work_id":"def08686-c0dd-4611-9442-2f996cd8d4ec","year":2013},"citing_paper":{"arxiv_id":"1908.06672","last_updated":"2019-08-19T09:57:23Z","snapshot_observed_at":"2026-08-15T00:00:00.958277Z","submitted_at":"2019-08-19T09:57:23Z","title":"Graph Fourier Transform Based on $\\ell_1$ Norm Variation Minimization","version":1},"reference_index":2,"source":"pdf_text","source_observed_at":"2026-08-14T12:42:56.811317Z"},"links":{"citing_paper":"/paper/1908.06672"},"observation_digest":"sha256:b7790d237d7e56415177cfd02990092cdb2f8093e246e0c798abfc6885d5361e","observation_id":"0f01016e-1d3e-47ec-bd06-19fccbb91e27","resolution":{"observed_at":"2026-08-14T12:42:56.964715Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:42:56.954873Z","title":"On the graph fourier transform for directed graphs","venue":null,"work_id":"69cf7dfa-79bc-4540-99ee-b7ee6e8072d7","year":2017},"citing_paper":{"arxiv_id":"1908.06672","last_updated":"2019-08-19T09:57:23Z","snapshot_observed_at":"2026-08-15T00:00:00.958277Z","submitted_at":"2019-08-19T09:57:23Z","title":"Graph Fourier Transform Based on $\\ell_1$ Norm Variation Minimization","version":1},"reference_index":3,"source":"pdf_text","source_observed_at":"2026-08-14T12:42:56.814216Z"},"links":{"citing_paper":"/paper/1908.06672"},"observation_digest":"sha256:c4f9a924869267660a5af37a3501360b8c016e062405fd74c43bc3cb11c06b03","observation_id":"292bca3a-1d11-4cb5-bd55-ce54dba35e72","resolution":{"observed_at":"2026-08-14T12:42:56.957548Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:42:56.947780Z","title":"Discrete Signal Processing on Graphs","venue":null,"work_id":"3ce19bd9-0288-48f8-896c-0f46be108423","year":2013},"citing_paper":{"arxiv_id":"1908.06672","last_updated":"2019-08-19T09:57:23Z","snapshot_observed_at":"2026-08-15T00:00:00.958277Z","submitted_at":"2019-08-19T09:57:23Z","title":"Graph Fourier Transform Based on $\\ell_1$ Norm Variation Minimization","version":1},"reference_index":4,"source":"pdf_text","source_observed_at":"2026-08-14T12:42:56.816903Z"},"links":{"citing_paper":"/paper/1908.06672"},"observation_digest":"sha256:fc71edd62f9d32cc342acfd30ed6910a2388739a95f887260e95982c3d53c8ca","observation_id":"816e5cb7-718a-4382-bd46-b0179c19f43d","resolution":{"observed_at":"2026-08-14T12:42:56.950528Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:42:56.940860Z","title":"Vertex-frequency analysis on graphs","venue":null,"work_id":"8e682f79-4339-49d8-9604-9c0302e36f63","year":2016},"citing_paper":{"arxiv_id":"1908.06672","last_updated":"2019-08-19T09:57:23Z","snapshot_observed_at":"2026-08-15T00:00:00.958277Z","submitted_at":"2019-08-19T09:57:23Z","title":"Graph Fourier Transform Based on $\\ell_1$ Norm Variation Minimization","version":1},"reference_index":5,"source":"pdf_text","source_observed_at":"2026-08-14T12:42:56.819692Z"},"links":{"citing_paper":"/paper/1908.06672"},"observation_digest":"sha256:d58bbac20902c804369e836413c290d306ecc135524d65810dd69ed17569beda","observation_id":"f33ac43a-a27b-4ad2-ab63-c0b0aca29398","resolution":{"observed_at":"2026-08-14T12:42:56.943560Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:42:56.933515Z","title":"Multiscale Wavelets on Trees, Graphs and High Dimen- sional Data: Theory and Applications to Semi Supervised Learning","venue":null,"work_id":"b689b290-67dc-4444-a30d-7869764f1e63","year":2010},"citing_paper":{"arxiv_id":"1908.06672","last_updated":"2019-08-19T09:57:23Z","snapshot_observed_at":"2026-08-15T00:00:00.958277Z","submitted_at":"2019-08-19T09:57:23Z","title":"Graph Fourier Transform Based on $\\ell_1$ Norm Variation Minimization","version":1},"reference_index":6,"source":"pdf_text","source_observed_at":"2026-08-14T12:42:56.822771Z"},"links":{"citing_paper":"/paper/1908.06672"},"observation_digest":"sha256:93ebe55066e21757fa2513ca138325691112bae7ae73a4cd8de388a12bc6e585","observation_id":"ad8a471f-34db-41ac-bc43-ca3a69a3516e","resolution":{"observed_at":"2026-08-14T12:42:56.936376Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:42:56.926178Z","title":"Wavelets on Graphs via Spectral Graph Theory","venue":null,"work_id":"ed93e96a-7c74-4556-ae4b-59768e894b02","year":2011},"citing_paper":{"arxiv_id":"1908.06672","last_updated":"2019-08-19T09:57:23Z","snapshot_observed_at":"2026-08-15T00:00:00.958277Z","submitted_at":"2019-08-19T09:57:23Z","title":"Graph Fourier Transform Based on $\\ell_1$ Norm Variation Minimization","version":1},"reference_index":7,"source":"pdf_text","source_observed_at":"2026-08-14T12:42:56.825703Z"},"links":{"citing_paper":"/paper/1908.06672"},"observation_digest":"sha256:6d18fb0de2dcad4d9983cb8908905b4d4bd6ea041ce737903645b4701907fa14","observation_id":"b47b44c3-946a-4f10-8315-e3396c085e04","resolution":{"observed_at":"2026-08-14T12:42:56.929093Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:42:56.918921Z","title":"Unsupervised deep haar scattering on graphs","venue":null,"work_id":"4d773f55-24e7-4021-972a-18fb51753612","year":2014},"citing_paper":{"arxiv_id":"1908.06672","last_updated":"2019-08-19T09:57:23Z","snapshot_observed_at":"2026-08-15T00:00:00.958277Z","submitted_at":"2019-08-19T09:57:23Z","title":"Graph Fourier Transform Based on $\\ell_1$ Norm Variation Minimization","version":1},"reference_index":8,"source":"pdf_text","source_observed_at":"2026-08-14T12:42:56.828150Z"},"links":{"citing_paper":"/paper/1908.06672"},"observation_digest":"sha256:f658043043544f89175d0b57e31b80509107e4a3507b856b3b1fc02219f66820","observation_id":"49fc1a9e-d3db-490a-8db5-55319b07a0cc","resolution":{"observed_at":"2026-08-14T12:42:56.921606Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:42:56.911459Z","title":"Sparse representation on graphs by tight wavelet frames and applications","venue":null,"work_id":"8bd6482a-babd-46f3-bb3f-3cb91d6102b1","year":2017},"citing_paper":{"arxiv_id":"1908.06672","last_updated":"2019-08-19T09:57:23Z","snapshot_observed_at":"2026-08-15T00:00:00.958277Z","submitted_at":"2019-08-19T09:57:23Z","title":"Graph Fourier Transform Based on $\\ell_1$ Norm Variation Minimization","version":1},"reference_index":9,"source":"pdf_text","source_observed_at":"2026-08-14T12:42:56.830621Z"},"links":{"citing_paper":"/paper/1908.06672"},"observation_digest":"sha256:a6ca7fb785a28f1bf23c5d27a9fd6f1e1cc05bbfda04ebb06c64267db2c587e3","observation_id":"301f16c5-6719-415a-8ea2-ff551efe4903","resolution":{"observed_at":"2026-08-14T12:42:56.914328Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:42:56.903633Z","title":"Discrete Signal Processing on Graphs: Sampling Theory","venue":null,"work_id":"03c12204-293f-489d-918a-d9afe7ead425","year":2015},"citing_paper":{"arxiv_id":"1908.06672","last_updated":"2019-08-19T09:57:23Z","snapshot_observed_at":"2026-08-15T00:00:00.958277Z","submitted_at":"2019-08-19T09:57:23Z","title":"Graph Fourier Transform Based on $\\ell_1$ Norm Variation Minimization","version":1},"reference_index":10,"source":"pdf_text","source_observed_at":"2026-08-14T12:42:56.833211Z"},"links":{"citing_paper":"/paper/1908.06672"},"observation_digest":"sha256:9a01de90ef2fda3fd3b1142d8ed9fc8739899445eba09823136be11091b4fe9d","observation_id":"15da6f64-300f-4ea4-85bd-f3d828de8c7c","resolution":{"observed_at":"2026-08-14T12:42:56.906608Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:42:56.895893Z","title":"A Spectral Graph Uncertainty Principle","venue":null,"work_id":"e37e671f-6682-4851-b452-cd37f1dd0b24","year":2013},"citing_paper":{"arxiv_id":"1908.06672","last_updated":"2019-08-19T09:57:23Z","snapshot_observed_at":"2026-08-15T00:00:00.958277Z","submitted_at":"2019-08-19T09:57:23Z","title":"Graph Fourier Transform Based on $\\ell_1$ Norm Variation Minimization","version":1},"reference_index":11,"source":"pdf_text","source_observed_at":"2026-08-14T12:42:56.835659Z"},"links":{"citing_paper":"/paper/1908.06672"},"observation_digest":"sha256:6895acd0d7a3ffe85953d3d28e0c8079fced63a9c0267aaa19ba5e96fa58d9a2","observation_id":"8e080c3a-fe25-401c-a94b-5a82614b7c0e","resolution":{"observed_at":"2026-08-14T12:42:56.898737Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:42:56.888177Z","title":"Convergence and energy landscape for Cheeger cut clustering","venue":null,"work_id":"eb0a881b-892b-440a-9c3a-6de7717275c0","year":2012},"citing_paper":{"arxiv_id":"1908.06672","last_updated":"2019-08-19T09:57:23Z","snapshot_observed_at":"2026-08-15T00:00:00.958277Z","submitted_at":"2019-08-19T09:57:23Z","title":"Graph Fourier Transform Based on $\\ell_1$ Norm Variation Minimization","version":1},"reference_index":12,"source":"pdf_text","source_observed_at":"2026-08-14T12:42:56.838171Z"},"links":{"citing_paper":"/paper/1908.06672"},"observation_digest":"sha256:958762619b0e541a220fb3c713d5a369bb448a12fc5265be5ed3ad7dee0f7570","observation_id":"c07abca2-cd2f-43a5-91f8-a5fd019325c5","resolution":{"observed_at":"2026-08-14T12:42:56.891071Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:42:56.880398Z","title":"A splitting method for orthogonality constrained problems","venue":null,"work_id":"f7a5b454-9984-48a7-8c1e-47eccef95b2d","year":2014},"citing_paper":{"arxiv_id":"1908.06672","last_updated":"2019-08-19T09:57:23Z","snapshot_observed_at":"2026-08-15T00:00:00.958277Z","submitted_at":"2019-08-19T09:57:23Z","title":"Graph Fourier Transform Based on $\\ell_1$ Norm Variation Minimization","version":1},"reference_index":13,"source":"pdf_text","source_observed_at":"2026-08-14T12:42:56.840580Z"},"links":{"citing_paper":"/paper/1908.06672"},"observation_digest":"sha256:ae2619294f7751368e7d64531e63c845834883ba1446c735e391f5bef66dcd28","observation_id":"0b9258f0-c861-4238-a8e8-a093357c8387","resolution":{"observed_at":"2026-08-14T12:42:56.883440Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:42:56.871210Z","title":"GSPBOX: A toolbox for signal processing on graphs","venue":null,"work_id":"d0603f9c-9fa4-4645-a272-9be711aa6635","year":2016},"citing_paper":{"arxiv_id":"1908.06672","last_updated":"2019-08-19T09:57:23Z","snapshot_observed_at":"2026-08-15T00:00:00.958277Z","submitted_at":"2019-08-19T09:57:23Z","title":"Graph Fourier Transform Based on $\\ell_1$ Norm Variation Minimization","version":1},"reference_index":14,"source":"pdf_text","source_observed_at":"2026-08-14T12:42:56.843156Z"},"links":{"citing_paper":"/paper/1908.06672"},"observation_digest":"sha256:3852c56f4c95ab17cd194bb29840ef0eb07480baeafd82d984497732288e6c54","observation_id":"da022756-1b8f-4f3b-b49f-91371e83e575","resolution":{"observed_at":"2026-08-14T12:42:56.874828Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:42:56.862646Z","title":null,"venue":null,"work_id":"207a8b39-14fa-49dc-8060-992c0736a5ac","year":null},"citing_paper":{"arxiv_id":"1908.06672","last_updated":"2019-08-19T09:57:23Z","snapshot_observed_at":"2026-08-15T00:00:00.958277Z","submitted_at":"2019-08-19T09:57:23Z","title":"Graph Fourier Transform Based on $\\ell_1$ Norm Variation Minimization","version":1},"reference_index":15,"source":"pdf_text","source_observed_at":"2026-08-14T12:42:56.845621Z"},"links":{"citing_paper":"/paper/1908.06672"},"observation_digest":"sha256:fe14f6a6b89103bd8eb1d91ffa781edb52ff06dc6f4a07dab36e4bca1f96e7c3","observation_id":"a52a5dc4-fb89-4a15-93cb-1b199787cef9","resolution":{"observed_at":"2026-08-14T12:42:56.866100Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}}],"paper":{"arxiv_id":"1908.06672","last_updated":"2019-08-19T09:57:23Z","latest_version":1,"primary_category":"cs.IT","snapshot_observed_at":"2026-08-15T00:00:00.958277Z","submitted_at":"2019-08-19T09:57:23Z","title":"Graph Fourier Transform Based on $\\ell_1$ Norm Variation Minimization"},"reference_resolution":{"displayed":15,"state_counts":{"malformed_identifier":0,"metadata_mismatch":0,"parse_uncertain":0,"unresolved":2,"verified_exact":0,"verified_fuzzy":13},"total_outbound_references":15},"refusal":"A citation records a reference. It does not transfer a finding from one paper to another.","schema":"pith.paper-citation-record.v1","standing_sources":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"thesis":"As of 16 August 2026, this Paper Citation Record lists 15 of 15 outbound references and 0 inbound Pith citation observations for arXiv:1908.06672."}