Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links
Paper Citation Record · LEDGER
Sparse Principal Components Analysis
As of 9 August 2026, this Paper Citation Record lists 0 of 0 outbound references and 2 inbound Pith citation observations for arXiv:0901.4392.
A citation records a reference. It does not transfer a finding from one paper to another.
Coverage vector
One-hop event checks from named stored sources.
Source: scholarly_work_events, retraction_status_cache, observed 2026-08-09T06:31:02.800959+00:00
Pith citing papers itemized under the disclosed page cap.
Source: paper_references, paper_reference_links, observed 2026-08-04T04:10:04.043768Z
A source-named dated measurement, never combined with another source.
Source: cited_works
Reference resolution
0 of 0 outbound references displayed
- verified exact0
- verified fuzzy0
- unresolved0
- parse uncertain0
- malformed identifier0
- metadata mismatch0
External citation measurements
No source-named external measurement is stored.
Outbound references
No outbound reference observations are available for this paper version.
Pith citing papers
Observation ddee6713-061f-4b08-9310-0e6210673a10 · inbound
Estimating eigenvectors and eigenspaces of covariance matrices: Optimal Bounds and Conditions for Consistency cites this paper.
Estimating eigenvectors and eigenspaces of covariance matrices: Optimal Bounds and Conditions for Consistency Sparse Principal Components Analysis
Reference 20
- Resolution
- unresolved
- no resolver link, observed 2026-07-31T23:36:43.861994Z
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation e8893f2f-964a-4a65-b944-56fa1a75b3b5 · inbound
Estimating eigenvectors and eigenspaces of covariance matrices: Optimal Bounds and Conditions for Consistency cites this paper.
Estimating eigenvectors and eigenspaces of covariance matrices: Optimal Bounds and Conditions for Consistency Sparse Principal Components Analysis
Reference 20
- Resolution
- unresolved
- no resolver link, observed 2026-08-04T04:10:04.043768Z
Source-reported events for the cited work
Unavailable: canonical work link unavailable.