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DTSTART:20251026T030000
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UID:calendar.142454.field_date.0@www.tse-fr.eu
DTSTAMP:20260505T074924Z
CREATED:20260420T151001Z
DESCRIPTION:Vadim Gorin (University of California\, Berkeley)\, “How weak a
 re weak factors? Uniform inference for signal strength in signal plus nois
 e models”\, MAD-Stat. Seminar\, Toulouse: TSE\, May 22\, 2026\, 11:00–12:1
 5\, room Auditorium 4.\n\nWe discuss four classical signal-plus-noise mode
 ls: the factor model\, spiked sample covariance matrices\, the sum of a Wi
 gner matrix and a low-rank perturbation\, and canonical correlation analys
 is with low-rank dependencies. The objective is to construct confidence in
 tervals for the signal strength that are uniformly valid across all regime
 s: strong\, weak\, and critical signals. We demonstrate that traditional G
 aussian approximations fail in the critical regime. Instead\, we introduce
  a universal transitional distribution that enables valid inference across
  the entire spectrum of signal strengths. The approach is illustrated thro
 ugh applications in macroeconomics and finance.
DTSTART;TZID=Europe/Paris:20260522T120000
DTEND;TZID=Europe/Paris:20260522T131500
LAST-MODIFIED:20260505T001001Z
LOCATION:Toulouse: TSE\, May 22\, 2026\, 11:00–12:15\, room Auditorium 4
SUMMARY:MAD-Stat. Seminar
URL;TYPE=URI:https://www.tse-fr.eu/seminars/2026-how-weak-are-weak-factors-
 uniform-inference-signal-strength-signal-plus-noise-models
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