Approximations and Reductions

Polynomial-Time Reductions, NP-Completeness, and Approximations 1

Matrix-based set approximations and reductions in covering decision information systems

Article history: Received 21 June 2014 Received in revised form 12 October 2014 Accepted 12 January 2015 Available online 7 February 2015

Exponential Models: Approximations for Probabilities

Welch & Peers (1963) used a root-information prior to obtain posterior probabilities for a scalar parameter exponential model and showed that these Bayes probabilities had the confidence property to second order asymptotically. An important undercurrent of this indicates that the constant information reparameterization provides location model structure, for which the confidence property ...

$varepsilon$-Simultaneous approximations of downward sets

In this paper, we prove some results on characterization of $varepsilon$-simultaneous approximations of downward sets in vector lattice Banach spaces. Also, we give some results about simultaneous approximations of normal sets.

Triangular approximations of fuzzy number with value and ambiguity functions