条件付確率場の理論とその工学的応用

Abstract

This paper outlines the theory of conditional random fields and its application.Probabilistic relations of conditional random fields are analytically developed; that is conditional means, first passage solution of conditional random fields, and method of digital simulation.In particular, an approximate method of digital simulation is presented that ensures stability of computational calculations.Conditional fields of earthquake ground motions are discussed for power spectral density and coherence functions determined statistically or derived from analysis of elastic waves propagating through a random medium.Time variations of wind speed are digitally simulated, as another engineering application of a conditional random field, using power spectral density functions fitted for observation in a wind tunnel.