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researcher

J. Ortega

24 papers hereh-index 302.9k citations123 works total

Matching runs newest-first, so older work may not be attached to this profile yet.

author position
  • sole author4
  • first author9
  • middle author5
  • last author6

Across the 24 of 24 papers where every author was matched, so the position is known.

fields
  • math.SG14
  • math.DG3
  • math.PR3
  • math.DS2
  • q-fin.CP1
  • q-fin.RM1
same name
  • J. Ortega — 6 papers, h 27
  • J. Ortega — 1 paper, h 10
  • J. Ortega — 1 paper, h 27
  • J. Ortega — 1 paper, h 2

Either other researchers who publish under this name, or the same person where the external sources have not merged their records.

identity via Semantic Scholar / OpenAlex

activity
19992011
most citedA new approach for scenario generation in Risk management

5 citations · 14 across the 12 of their papers we have counts for

collaborators
Showing 2011Show all

1 paper · 1 filter

q-fin.CP2011

Multivariate GARCH estimation via a Bregman-proximal trust-region method

Stéphane Chrétien, Juan-Pablo Ortega

The estimation of multivariate GARCH time series models is a difficult task mainly due to the significant overparameterization exhibited by the problem and usually referred to as t…

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Not affiliated with arXiv. Researcher data from Semantic Scholar (ODC-BY) and OpenAlex.