| The Coordinate-Free Approach to Gauss-Markov Estimation Softcover Repri Edition Contributor(s): Drygas, H. (Author) |
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ISBN: 3540053263 ISBN-13: 9783540053262 Publisher: Springer OUR PRICE: $52.24 Product Type: Paperback Published: January 1970 |
| Additional Information |
| BISAC Categories: - Business & Economics | Economics - General - Business & Economics | Operations Research |
| Dewey: 519.54 |
| Series: Lecture Notes in Economic and Mathematical Systems |
| Physical Information: 0.27" H x 7" W x 10" (0.52 lbs) 118 pages |
| Descriptions, Reviews, Etc. |
| Publisher Description: These notes originate from a couple of lectures which were given in the Econometric Workshop of the Center for Operations Research and Econometrics (CORE) at the Catholic University of Louvain. The participants of the seminars were recommended to read the first four chapters of Seber's book 40], but the exposition of the material went beyond Seber's exposition, if it seemed necessary. Coordinate-free methods are not new in Gauss-Markov estimation, besides Seber the work of Kolmogorov 11], SCheffe 36], Kruskal 21], 22] and Malinvaud 25], 26] should be mentioned. Malinvaud's approach however is a little different from that of the other authors, because his optimality criterion is based on the ellipsoid of c- centration. This criterion is however equivalent to the usual c- cept of minimal covariance-matrix and therefore the result must be the same in both cases. While the usual theory gives no indication how small the covariance-matrix can be made before the optimal es- timator is computed, Malinvaud can show how small the ellipsoid of concentration can be made: it is at most equal to the intersection of the ellipssoid of concentration of the observed random vector and the linear space in which the (unknown) expectation value of the observed random vector is lying. This exposition is based on the observation, that in regression nalysis and related fields two conclusions are or should preferably be applied repeatedly. |