Results 211 to 220 of about 197,057 (337)

Partial Observability of Implied Volatility Matrices: Identification and Covolatilities Filtering

open access: yesMathematical Finance, EarlyView.
ABSTRACT Whereas data on implied volatilities are available for a large number of assets, this is less frequently the case of implied covolatilities. We introduce a new approach based on static and dynamic Wishart models to solve this problem of missing data.
Christian Gouriéroux, Yang Lu
wiley   +1 more source

Dynamically Consistent Analysis of Realized Covariations in Term Structure Models

open access: yesMathematical Finance, EarlyView.
ABSTRACT In this article, we show how to analyze the covariation of bond prices nonparametrically and robustly, staying consistent with a general no‐arbitrage setting. This is, in particular, motivated by the problem of identifying the number of statistically relevant factors in the bond market under minimal conditions.
Dennis Schroers
wiley   +1 more source

Electromagnetic dynamic stability analysis of power electronics-dominated systems using eigenstructure-preserved LTP Theory. [PDF]

open access: yesNat Commun
Hu J   +11 more
europepmc   +1 more source

Identifying the Degree of Gene Reuse During Repeated Adaptation

open access: yesMolecular Ecology, EarlyView.
ABSTRACT The degree or extent of gene reuse during repeated adaptation offers key insights into the genomic constraints on evolution. Although many studies have identified signs of genomic repeatability, a thorough synthesis of methods for detecting gene reuse and estimating its extent is missing. In this review, we first propose a simple framework for
Samridhi Chaturvedi   +2 more
wiley   +1 more source

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