منابع مشابه
Empirical Plug-in Curve and Surface Estimates
We obtain estimates of a surface θ : Rd → R by first finding the coefficient vector β(x) that minimizes a distance between θ(z) and an approximating function θ(z−x;β) for z in a neighborhood of a given point x ∈ Rd, next expressing this β(x) as a functional β(x;G) of a surface G : Rq → R that admits an empirical estimate Ĝ(·), and then using the empirical plug-in approach with β̂(x) = β(x; Ĝ) an...
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Catch data from a single year across many cohorts of fish will be identical to longitudinal data of a single cohort if each cohort sampled began with the same number of fish (i.e., recruitment is constant) and if the mortality rate is constant across all ages and years. For example, the catches-at-age of the hypothetical 2002 and 2006 cohorts is shown on diagonals in Table 1 and are equal to th...
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The objective of this study was to estimate variance components and genetic parameters for growth curve parameters in Shall sheep. Studied traits were parameters of Brody growth model which included A (asymptotic mature weight), B (initial animal weight) and K (maturation rate). The data set and pedigree information used in this study were obtained from the Animal Breeding Center of Iran and co...
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We show that the dual effectively monotone span of a simple closed curve X in the plane does not exceed the infimum of the set of positive numbers m such that a chain with mesh m covers X. We also include a short direct proof of a known inequality σ0(0) ≤ ̄(X), where X is a continuum. We begin with a brief review of the definitions introduced by A. Lelek in [1] and [2]. Let X be a nonempty conn...
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First derivative based tools have been very popular for detecting features in nonparametric curve estimators. However, in many applications second derivative information is quite important for identifying statistically significant features. This paper illustrates several different ways in which second derivative based inference significantly improves upon methods based on first derivatives. The...
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ژورنال
عنوان ژورنال: The Annals of Mathematical Statistics
سال: 1971
ISSN: 0003-4851
DOI: 10.1214/aoms/1177693050