說明 
1 online resource (xvii, 246 pages) : illustrations, digital ; 24 cm 

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computer c rdamedia 

online resource cr rdacarrier 

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系列 
Frontiers in probability and the statistical sciences 

Frontiers in probability and the statistical sciences

附註 
Prediction: some heuristic notions  The Modelfree Prediction Principle  Modelbased prediction in regression  Modelfree prediction in regression  Modelfree vs. modelbased confidence intervals  Linear time series and optimal linear prediction  Modelbased prediction in autoregression  Modelfree inference for Markov processes  Predictive inference for locally stationary time series  Modelfree vs. modelbased volatility prediction 

The ModelFree Prediction Principle expounded upon in this monograph is based on the simple notion of transforming a complex dataset to one that is easier to work with, e.g., i.i.d. or Gaussian. As such, it restores the emphasis on observable quantities, i.e., current and future data, as opposed to unobservable model parameters and estimates thereof, and yields optimal predictors in diverse settings such as regression and time series. Furthermore, the ModelFree Bootstrap takes us beyond point prediction in order to construct frequentist prediction intervals without resort to unrealistic assumptions such as normality. Prediction has been traditionally approached via a modelbased paradigm, i.e., (a) fit a model to the data at hand, and (b) use the fitted model to extrapolate/predict future data. Due to both mathematical and computational constraints, 20th century statistical practice focused mostly on parametric models. Fortunately, with the advent of widely accessible powerful computing in the late 1970s, computerintensive methods such as the bootstrap and crossvalidation freed practitioners from the limitations of parametric models, and paved the way towards the ̀big data' era of the 21st century. Nonetheless, there is a further step one may take, i.e., going beyond even nonparametric models; this is where the ModelFree Prediction Principle is useful. Interestingly, being able to predict a response variable Y associated with a regressor variable X taking on any possible value seems to inadvertently also achieve the main goal of modeling, i.e., trying to describe how Y depends on X. Hence, as prediction can be treated as a byproduct of modelfitting, key estimation problems can be addressed as a byproduct of being able to perform prediction. In other words, a practitioner can use ModelFree Prediction ideas in order to additionally obtain point estimates and confidence intervals for relevant parameters leading to an alternative, transformationbased approach to statistical inference 
Host Item 
Springer eBooks

主題 
Mathematical statistics  Methods


Regression analysis


Statistics


Statistical Theory and Methods


Statistics and Computing/Statistics Programs


Statistics for Business/Economics/Mathematical Finance/Insurance

Alt Author 
SpringerLink (Online service)

