Results 111 to 120 of about 76,006 (191)

The Mathematical History Behind the Granger–Johansen Representation Theorem

open access: yesOxford Bulletin of Economics and Statistics, EarlyView.
ABSTRACT When can a vector time series that is integrated once (i.e., becomes stationary after taking first differences) be described in error correction form? The answer to this is provided by the Granger–Johansen representation theorem. From a mathematical point of view, the theorem can be viewed as essentially a statement concerning the geometry of ...
Johannes M. Schumacher
wiley   +1 more source

Algebraic methods and computational strategies for pseudoinverse-based MR image reconstruction (Pinv-Recon). [PDF]

open access: yesSci Rep
Yeung K   +11 more
europepmc   +1 more source

Least Trimmed Squares: Cointegration and Outliers

open access: yesOxford Bulletin of Economics and Statistics, EarlyView.
ABSTRACT When applying the cointegrated autoregressive distributed lag model it is common to include indicator variables for outliers. This is often done in a somewhat ad hoc way. Least Trimmed Squares estimation provides a more systematic approach. This estimator is robust to a large number of outliers of many types.
Vanessa Berenguer‐Rico, Bent Nielsen
wiley   +1 more source

Severity of Betel Quid Use Disorders (BUD) Among Adult Indian Betel Quid Chewers

open access: yesOral Diseases, EarlyView.
ABSTRACT Objective Oral cancer is a major public health problem in India, with the highest number of cases and deaths in the world, and Betel Quid (BQ) chewing is responsible for almost 50% of cases. BQ Use Disorder (BUD) prevalence and severity have never been investigated among Indian BQ chewers.
Stefano Petti   +9 more
wiley   +1 more source

Go-or-grow models in biology: a monster on a leash. [PDF]

open access: yesJ Math Biol
Thiessen R   +3 more
europepmc   +1 more source

Dimension reduction for optimal design problems with Kronecker product structure

open access: yesScandinavian Journal of Statistics, EarlyView.
Abstract This paper is motivated by the problem of optimal allocation of trials in multi‐environment crop variety testing with a large number of varieties. Optimizing the allocation of trials results in the minimization of a design criterion with a Kronecker product structure in the information matrix.
Taras Bodnar, Maryna Prus
wiley   +1 more source

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