منابع مشابه
A Rational Rank Four Demand System
Past parametric tests of demand system rank employed polynomial Engel curve systems. However, by Gorman’s (1981) theorem, the maximum possible rank of a utility derived polynomial demand system is three. The present paper proposes a class of demand systems that are utility derived, are close to polynomial, and have rank four. These systems nest rational polynomial demands, and so can be used to...
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Suppose f = p/q is a quotient of two polynomials and that p has degree rp and q has degree rq . Assume that f(A) and f(A+ uv ) are defined where A ∈ R, u ∈ R, and v ∈ R are given and set r = max{rp, rq}. We show how to compute f(A+uv ) in O(rn2) flops assuming that f(A) is available together with an appropriate factorization of the “denominator matrix” q(A). The central result can be interprete...
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ژورنال
عنوان ژورنال: Journal of Applied Econometrics
سال: 2003
ISSN: 0883-7252,1099-1255
DOI: 10.1002/jae.677