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Improved estimation of the covariance matrix of stock returns with an application to portfolio selection

✍ Scribed by Olivier Ledoit; Michael Wolf


Book ID
117628185
Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
193 KB
Volume
10
Category
Article
ISSN
0927-5398

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An estimator of the inverse covariance m
✍ B. David; G. Bastin πŸ“‚ Article πŸ“… 2001 πŸ› Elsevier Science 🌐 English βš– 202 KB

An exact formula of the inverse covariance matrix of an autoregressive stochastic process is obtained using the Gohberg}Semencul explicit inverse of the Toeplitz matrix. This formula is used to build an estimator of the inverse covariance matrix of a stochastic process based on a single realization.