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Economics Department seminar, KIMEP
Convergence of distributions arising in autocorrelation hypothesis testing Kairat Mynbaev International School of Economics Kazakh-British Technical University Economics Department seminar, KIMEP January 27, 2012 (Presented at 2011 World Congress of Engineering and Technology, October 30, 2011, Paper ID 22492)
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Linear regression with correlated errors
Null hypothesis: Alternative: Assumption is positive definite for and
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Example (Le Sage, J. & R.K. Pace, Introduction to Spatial Econometrics, Taylor & Francis, 2009, p.10)
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R1 R2 R3 R4 CBD R5 R6 R7 West Highway East R1 R2 R3 R4 CBD R5 R6 R7 Seven regions in the city; CBD is the Central Business District. Population density decreases and travel times increase with the distance to CBD
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First-order contiguity matrix
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Problem and history Krämer, W., (2005) J. Stat. Plan. Inf. 128, Martellosio, F. (2010) Econometric Theory 26, Theorem (Martellosio) Under Assumption 1 consider an invariant test and let the density of u be continuous and unimodal at the origin. Then
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Cliff-Ord test: Assumption 2. The density g of ε is spherically symmetric: Assumption 3. (a) The matrix A(ρ) satisfies Assumption 1 and Other eigenvalues have positive limits. (b)
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Assumption 4. The density g satisfies
Theorem 2. Let Assumptions 1-4 hold and suppose that the inclusion
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Distributions escaping to infinity
Example 1. Let g be a density on R and put Example 2 (stretching-out). g1 g1/2 g1/3
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Theorem 3. If Theorem 4. Let exists, then
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Application to the theory of characteristic functions
F is a distribution function of a random variable X. j(x) is the jump of F at point x. φ(t) is the characteristic function of X. Corollary 1. If g is summable and even, then where the sum on the right is over all jump points of F. Lukacs, E. (1970) Characteristic Functions, Griffin, Theorems and 3.3.4
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Application to the theory of almost-periodic functions
φ is an almost-periodic function on the real line. Corollary 2. If g is integrable and even, then See H. Bohr’s theorem in: Akhiezer, N.I. & I.M. Glazman (1993) Theory of Linear Operators in Hilbert Spaces. Dover Publications.
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