5

In this paper we describe a method for weighting surveys of a sub-sample of voters. We focus on the case of Latino voters. And we analyze data for three surveys: two opinion polls leading up to the 2004 presidential election, and the national exit poll from the 2004 election. We take advantage of much data when it is available, the large amount of data describing the demographics of Hispanic ci...

In this work we study both the index coding with side information (ICSI) problem [5] and the more general problem of index coding with coded side information (ICCSI), as introduced by Shum et al in 2012. We investigate the optimal rate of an instance of the index coding problem. In the ICSI problem case, we characterize those digraphs having min-rank one less than their order and we give an upp...

The first infinite families of symmetric designswere obtained fromfinite projective geometries, Hadamardmatrices, and difference sets. In this paper we describe two general methods of constructing symmetric designs that give rise to the parameters of all other known infinite families of symmetric designs. The method of global decomposition produces an incidence matrix of a symmetric design as a...

Abstract Let A be a reduced incidence relation between n lines and m points. Suppose that (a) Through each two points there pass λ lines (b) Each two lines intersect in μ points. If λ μ = = 1 assume, moreover, that there are four points no three of which are on one line. Then n m = , λ μ = , and there is a number r such that all lines have r points and through each point there pass r lines. The...