The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 27, 2011
Filed:
Nov. 17, 2008
Nicholas G. Duffield, Summit, NJ (US);
Carsten Lund, Berkeley Heights, NJ (US);
Mikkel Thorup, Florence, MA (US);
Nicholas G. Duffield, Summit, NJ (US);
Carsten Lund, Berkeley Heights, NJ (US);
Mikkel Thorup, Florence, MA (US);
AT&T Intellectual Property II, L.P., Atlanta, GA (US);
Abstract
Two regularized estimators that avoid the pathologies associated with variance estimation are disclosed. The regularized variance estimator adds a contribution to estimated variance representing the likely error, and hence ameliorates the pathologies of estimating small variances while at the same time allowing more reliable estimates to be balanced in the convex combination estimator. The bounded variance estimator employs an upper bound to the variance which avoids estimation pathologies when sampling probabilities are very small.