{"as_of":"2026-08-18T14:26:00Z","caps":{"database_statements":6,"inbound":100,"outbound":100},"context_digest":"sha256:05e6316bf22e28a420bb846d8c37251343409dc2e37f821135e2b9cd843990de","coverage":[{"denominator":0,"lane":"reference_resolution","note":"Typed states for the displayed outbound observations.","records_observed":0,"source":"paper_references, paper_reference_links","source_observed_at":null,"state":"measured"},{"denominator":8,"lane":"standing_notices","note":"One-hop event checks from named stored sources.","records_observed":8,"source":"scholarly_work_events, retraction_status_cache","source_observed_at":"2026-08-18T06:34:40.430872+00:00","state":"measured"},{"denominator":8,"lane":"inbound_itemization","note":"Pith citing papers itemized under the disclosed page cap.","records_observed":8,"source":"paper_references, paper_reference_links","source_observed_at":"2026-08-15T17:50:14.458357Z","state":"measured"},{"denominator":1,"lane":"external_citation_measurements","note":"A source-named dated measurement, never combined with another source.","records_observed":1,"source":"arxiv_reference","source_observed_at":"2026-08-05T02:28:24.338817Z","state":"measured"}],"external_citation_measurements":[{"count":63,"observed_at":"2026-08-05T02:28:24.338817Z","source":"arxiv_reference"}],"inbound":[{"citation":{"cited_paper":{"arxiv_id":"1509.09169","last_updated":"2023-06-27T19:36:14Z","snapshot_observed_at":"2026-08-16T11:53:31.616294Z","submitted_at":"2015-09-30T13:38:31Z","title":"Lecture notes on ridge regression","version":8},"cited_work":{"arxiv_id":"1509.09169","doi":"10.48550/arxiv.1509.09169","metadata_source":"arxiv_reference","pith_arxiv_id":"1509.09169","snapshot_observed_at":"2026-08-05T02:28:24.338817Z","title":"and Murakami, D","venue":"arXiv (Cornell University)","work_id":"f746f84a-bc0f-4b7e-b93a-1f36a848dd11","year":2021},"citing_paper":{"arxiv_id":"2402.00183","last_updated":"2024-05-15T13:11:10Z","snapshot_observed_at":"2026-08-08T09:39:44.197088Z","submitted_at":"2024-01-31T21:24:21Z","title":"A review of regularised estimation methods and cross-validation in spatiotemporal statistics","version":2},"reference_index":17,"source":"pdf_text","source_observed_at":"2026-05-24T03:36:13.947570Z"},"links":{"cited_paper":"/paper/1509.09169","citing_paper":"/paper/2402.00183"},"observation_digest":"sha256:3bcee83d8e946689ea8c4a2483493d4af38699668a5b88b6c73c825e26abad24","observation_id":"478da2e0-a762-4ed4-a7bc-698e0b822110","resolution":{"observed_at":"2026-05-24T03:38:50.231767Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1509.09169","last_updated":"2023-06-27T19:36:14Z","snapshot_observed_at":"2026-08-16T11:53:31.616294Z","submitted_at":"2015-09-30T13:38:31Z","title":"Lecture notes on ridge regression","version":8},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1509.09169","snapshot_observed_at":"2026-08-12T14:05:11.615152Z","title":null,"venue":null,"work_id":null,"year":2015},"citing_paper":{"arxiv_id":"2411.15674","last_updated":"2024-11-24T00:00:10Z","snapshot_observed_at":"2026-08-15T09:35:52.946528Z","submitted_at":"2024-11-24T00:00:10Z","title":"Quantile deep learning models for multi-step ahead time series prediction","version":1},"reference_index":92,"source":"pdf_text","source_observed_at":"2026-08-12T14:05:11.615152Z"},"links":{"cited_paper":"/paper/1509.09169","citing_paper":"/paper/2411.15674"},"observation_digest":"sha256:2929bc9bccc42169279ef06a90362a7a76aecdca542e492262760763c7c1dcaa","observation_id":"e7fed99a-8d9e-4897-8ffe-2deefa32b641","resolution":{"observed_at":"2026-08-12T14:05:11.615152Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1509.09169","last_updated":"2023-06-27T19:36:14Z","snapshot_observed_at":"2026-08-16T11:53:31.616294Z","submitted_at":"2015-09-30T13:38:31Z","title":"Lecture notes on ridge regression","version":8},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1509.09169","snapshot_observed_at":"2026-08-12T11:44:49.028158Z","title":"[Vergara, 2012] Alexander Vergara","venue":null,"work_id":null,"year":2012},"citing_paper":{"arxiv_id":"2411.17961","last_updated":"2024-11-27T00:37:12Z","snapshot_observed_at":"2026-08-17T19:02:24.995817Z","submitted_at":"2024-11-27T00:37:12Z","title":"ESS-ReduNet: Enhancing Subspace Separability of ReduNet via Dynamic Expansion with Bayesian Inference","version":1},"reference_index":25,"source":"pdf_text","source_observed_at":"2026-08-12T11:44:49.028158Z"},"links":{"cited_paper":"/paper/1509.09169","citing_paper":"/paper/2411.17961"},"observation_digest":"sha256:ed98a13ff85652621ef0d92a436bf79869c0acdb1ad69aba9b002e428621e511","observation_id":"fac12c57-8401-49b4-9cd1-5de4f06aa7e5","resolution":{"observed_at":"2026-08-12T11:44:49.028158Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1509.09169","last_updated":"2023-06-27T19:36:14Z","snapshot_observed_at":"2026-08-16T11:53:31.616294Z","submitted_at":"2015-09-30T13:38:31Z","title":"Lecture notes on ridge regression","version":8},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1509.09169","snapshot_observed_at":"2026-08-08T18:53:47.903508Z","title":"Lecture notes on ridge regression ,","venue":null,"work_id":null,"year":2015},"citing_paper":{"arxiv_id":"2502.05583","last_updated":"2025-08-17T13:35:07Z","snapshot_observed_at":"2026-08-14T12:26:37.941350Z","submitted_at":"2025-02-08T14:17:33Z","title":"Efficient Sampling Allocation Strategies for General Graph-Filter-Based Signal Recovery","version":2},"reference_index":47,"source":"pdf_text","source_observed_at":"2026-08-08T18:53:47.903508Z"},"links":{"cited_paper":"/paper/1509.09169","citing_paper":"/paper/2502.05583"},"observation_digest":"sha256:689c8636931a0e4fcebaee10ba887533888ac4ef5effe6a989051a29431d17e9","observation_id":"a0ff8865-a410-442d-b6c6-a0aec0c8c2c5","resolution":{"observed_at":"2026-08-08T18:53:47.903508Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1509.09169","last_updated":"2023-06-27T19:36:14Z","snapshot_observed_at":"2026-08-16T11:53:31.616294Z","submitted_at":"2015-09-30T13:38:31Z","title":"Lecture notes on ridge regression","version":8},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1509.09169","snapshot_observed_at":"2026-08-07T12:51:39.473043Z","title":null,"venue":null,"work_id":null,"year":2023},"citing_paper":{"arxiv_id":"2505.23320","last_updated":"2025-05-29T10:30:13Z","snapshot_observed_at":"2026-08-15T20:22:52.843799Z","submitted_at":"2025-05-29T10:30:13Z","title":"Efficient Parameter Estimation for Bayesian Network Classifiers using Hierarchical Linear Smoothing","version":1},"reference_index":20,"source":"arxiv_source","source_observed_at":"2026-08-07T12:51:39.473043Z"},"links":{"cited_paper":"/paper/1509.09169","citing_paper":"/paper/2505.23320"},"observation_digest":"sha256:1dbb7415e0d49dff114fddbc0b5bef854eec09a02a25765d650e1b6cbb4cf5c5","observation_id":"ebc7bf50-0b6c-4d0a-b18f-da8b00f67526","resolution":{"observed_at":"2026-08-07T12:51:39.473043Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1509.09169","last_updated":"2023-06-27T19:36:14Z","snapshot_observed_at":"2026-08-16T11:53:31.616294Z","submitted_at":"2015-09-30T13:38:31Z","title":"Lecture notes on ridge regression","version":8},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1509.09169","snapshot_observed_at":"2026-08-15T17:50:14.458357Z","title":"://dx.doi.org/10.48550/arXiv.1509.09169","venue":null,"work_id":null,"year":2021},"citing_paper":{"arxiv_id":"2507.20501","last_updated":"2025-07-28T03:39:56Z","snapshot_observed_at":"2026-08-17T14:06:51.585449Z","submitted_at":"2025-07-28T03:39:56Z","title":"Post-estimation Adjustments in Data-driven Decision-making with Applications in Pricing","version":1},"reference_index":40,"source":"arxiv_source","source_observed_at":"2026-08-15T17:50:14.458357Z"},"links":{"cited_paper":"/paper/1509.09169","citing_paper":"/paper/2507.20501"},"observation_digest":"sha256:6875ad0d9f0511f81f7544471c1fadf15e573a5c8f86691b3d457453bbe7a68b","observation_id":"bc1c05ee-2deb-4691-a505-311d837ff70c","resolution":{"observed_at":"2026-08-15T17:50:14.458357Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1509.09169","last_updated":"2023-06-27T19:36:14Z","snapshot_observed_at":"2026-08-16T11:53:31.616294Z","submitted_at":"2015-09-30T13:38:31Z","title":"Lecture notes on ridge regression","version":8},"cited_work":{"arxiv_id":"1509.09169","doi":"10.48550/arxiv.1509.09169","metadata_source":"arxiv_reference","pith_arxiv_id":"1509.09169","snapshot_observed_at":"2026-08-05T02:28:24.338817Z","title":"and Murakami, D","venue":"arXiv (Cornell University)","work_id":"f746f84a-bc0f-4b7e-b93a-1f36a848dd11","year":2021},"citing_paper":{"arxiv_id":"2605.09881","last_updated":"2026-05-11T02:11:47Z","snapshot_observed_at":"2026-07-06T02:11:23.670680Z","submitted_at":"2026-05-11T02:11:47Z","title":"Dissecting Jet-Tagger Through Mechanistic Interpretability","version":1},"reference_index":39,"source":"pdf_text","source_observed_at":"2026-05-12T04:49:09.296991Z"},"links":{"cited_paper":"/paper/1509.09169","citing_paper":"/paper/2605.09881"},"observation_digest":"sha256:23dbb442a0d3459f7807b9b999af0befc420196e4b77ef5ca85adadc238a5922","observation_id":"836e459b-4272-4e5b-98bf-b81ddcab0aee","resolution":{"observed_at":"2026-05-12T04:51:22.565762Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1509.09169","last_updated":"2023-06-27T19:36:14Z","snapshot_observed_at":"2026-08-16T11:53:31.616294Z","submitted_at":"2015-09-30T13:38:31Z","title":"Lecture notes on ridge regression","version":8},"cited_work":{"arxiv_id":"1509.09169","doi":"10.48550/arxiv.1509.09169","metadata_source":"arxiv_reference","pith_arxiv_id":"1509.09169","snapshot_observed_at":"2026-08-05T02:28:24.338817Z","title":"and Murakami, D","venue":"arXiv (Cornell University)","work_id":"f746f84a-bc0f-4b7e-b93a-1f36a848dd11","year":2021},"citing_paper":{"arxiv_id":"2606.23174","last_updated":"2026-06-22T11:13:03Z","snapshot_observed_at":"2026-08-07T03:40:09.920456Z","submitted_at":"2026-06-22T11:13:03Z","title":"Principal Covariate Regression with Nuclear Norm Penalty","version":1},"reference_index":89,"source":"arxiv_source","source_observed_at":"2026-06-26T07:35:14.948348Z"},"links":{"cited_paper":"/paper/1509.09169","citing_paper":"/paper/2606.23174"},"observation_digest":"sha256:e11b846709bd3b78daa63f4d53ea175f6731bca18270c0dd7a0492d02355b87c","observation_id":"4d9fad8c-0bda-42be-a8c2-33e21db32852","resolution":{"observed_at":"2026-06-26T11:09:23.806515Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+00:00","source":"retraction_watch"}],"state":"measured"}}],"links":{"evidence":"/evidence","html":"/paper/1509.09169/citation-record","integrity":"/paper/1509.09169/integrity","json":"/paper/1509.09169/citation-record.json","paper":"/paper/1509.09169"},"outbound":[],"paper":{"arxiv_id":"1509.09169","last_updated":"2023-06-27T19:36:14Z","latest_version":8,"primary_category":"stat.ME","snapshot_observed_at":"2026-08-16T11:53:31.616294Z","submitted_at":"2015-09-30T13:38:31Z","title":"Lecture notes on ridge regression"},"reference_resolution":{"displayed":0,"state_counts":{"malformed_identifier":0,"metadata_mismatch":0,"parse_uncertain":0,"unresolved":0,"verified_exact":0,"verified_fuzzy":0},"total_outbound_references":0},"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":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+00:00","source":"retraction_watch"}],"thesis":"As of 18 August 2026, this Paper Citation Record lists 0 of 0 outbound references and 8 inbound Pith citation observations for arXiv:1509.09169."}