Vote for your favorite mineral in #MinCup25! - Kosmochlor vs. Titanite
We're going for namesake-minerals as bright meteorite-derived green #kosmochlor is up against the wedge-shaped indicator mineral #titanite.
Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic Time
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral Quiz
Photo SearchPhoto GalleriesSearch by ColorNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Pukelsheim, Friedrich (1981) On the Existence of Unbiased Nonnegative Estimates of Variance Convariance Components. The Annals of Statistics, 9 (2). 293-299 doi:10.1214/aos/1176345395

Advanced
   -   Only viewable:
Reference TypeJournal (article/letter/editorial)
TitleOn the Existence of Unbiased Nonnegative Estimates of Variance Convariance Components
JournalThe Annals of Statistics
AuthorsPukelsheim, FriedrichAuthor
Year1981 (March)Volume9
Issue2
PublisherInstitute of Mathematical Statistics
DOIdoi:10.1214/aos/1176345395Search in ResearchGate
Generate Citation Formats
Mindat Ref. ID9346370Long-form Identifiermindat:1:5:9346370:0
GUID0
Full ReferencePukelsheim, Friedrich (1981) On the Existence of Unbiased Nonnegative Estimates of Variance Convariance Components. The Annals of Statistics, 9 (2). 293-299 doi:10.1214/aos/1176345395
Plain TextPukelsheim, Friedrich (1981) On the Existence of Unbiased Nonnegative Estimates of Variance Convariance Components. The Annals of Statistics, 9 (2). 293-299 doi:10.1214/aos/1176345395
In(1981, March) The Annals of Statistics Vol. 9 (2) Institute of Mathematical Statistics

See Also

These are possibly similar items as determined by title/reference text matching only.

Mathew, Thomas (1984) On Nonnegative Quadratic Unbiased Estimability of Variance Components. The Annals of Statistics, 12 (4). 1566-1569 doi:10.1214/aos/1176346814
Hartung, Joachim (1981) Nonnegative Minimum Biased Invariant Estimation in Variance Component Models. The Annals of Statistics, 9 (2). 278-292 doi:10.1214/aos/1176345394
Pukelsheim, Friedrich (1984) A Note on Nonparametric Trend Conformity. The Annals of Statistics, 12 (2). 775-777 doi:10.1214/aos/1176346524
Harville, David A. (1981) Unbiased and Minimum-Variance Unbiased Estimation of Estimable Functions for Fixed Linear Models with Arbitrary Covariance Structure. The Annals of Statistics, 9 (3). 633-637 doi:10.1214/aos/1176345467
Olsen, Anthony, Seely, Justus, Birkes, David (1976) Invariant Quadratic Unbiased Estimation for Two Variance Components. The Annals of Statistics, 4 (5). 878-890 doi:10.1214/aos/1176343586
Pukelsheim, Friedrich, Studden, William J. (1993) E-Optimal Designs for Polynomial Regression. The Annals of Statistics, 21 (1). 402-415 doi:10.1214/aos/1176349033
Pukelsheim, Friedrich, Torsney, Ben (1991) Optimal Weights for Experimental Designs on Linearly Independent Support Points. The Annals of Statistics, 19 (3). 1614-1625 doi:10.1214/aos/1176348265
Portnoy, Stephen (1977) Asymptotic Efficiency of Minimum Variance Unbiased Estimators. The Annals of Statistics, 5 (3). 522-529 doi:10.1214/aos/1176343849
Hall, Peter (1981) On Trigonometric Series Estimates of Densities. The Annals of Statistics, 9 (3). 683-685 doi:10.1214/aos/1176345474
Wright, F. T. (1981) The Asymptotic Behavior of Monotone Regression Estimates. The Annals of Statistics, 9 (2). 443-448 doi:10.1214/aos/1176345411
Graybill, Franklin A. (1954) On Quadratic Estimates of Variance Components. The Annals of Mathematical Statistics, 25 (2) 367-372 doi:10.1214/aoms/1177728792
 
and/or  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2025, except where stated. Most political location boundaries are Β© OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: September 21, 2025 03:45:33
Go to top of page