Title :
Sequential Bayesian Method for Formulating Uncertainty in Sparse Data
Author :
Liu, Changqing ; Luo, Wencai
Author_Institution :
Coll. of Aerosp. & Mater. Eng., Nat. Univ. of Defense Technol., Changsha, China
Abstract :
To investigate uncertainty characteristics intrinsic in sparse data, a sequential Bayesian method was proposed to deal with this issue. In order to fully utilize information provided by original data, apriori distribution was calculated using apexes of the histogram of sparse data points for initial iteration. Mean square error was adopted as the assessing criterion of fitting fineness. Probabilistic measure entropy was calculated to describe how much information is used in both non-Bayesian and sequential Bayesian methods for comparison. Fitting examples demonstrate the capability of integrating uncertainty into the sparse data modeling process of the new method.
Keywords :
Bayes methods; data models; iterative methods; mean square error methods; statistical distributions; apriori distribution; mean square error; probabilistic measure entropy; sequential Bayesian method; sparse data modeling process; sparse data uncertainty formulation; uncertainty characteristics; Bayesian methods; Data models; Entropy; Fitting; Histograms; Measurement uncertainty; Uncertainty; apriori distribution; fitting; sparse data; uncertainty;
Conference_Titel :
Computational Intelligence and Security (CIS), 2011 Seventh International Conference on
Conference_Location :
Hainan
Print_ISBN :
978-1-4577-2008-6
DOI :
10.1109/CIS.2011.301