Szukana fraza: [Abstract = "We propose an efficient numerical algorithm for relative error model reduction based on balanced stochastic truncation. The method uses full\-rank factors of the Gramians to be balanced versus each other and exploits the fact that for large\-scale systems these Gramians are often of low numerical rank. We use the easy\-to\-parallelize sign function method as the major computational tool in determining these full\-rank factors and demonstrate the numerical performance of the suggested implementation of balanced stochastic truncation model reduction."]