Matrix-valued coefficients of a Bernstein polynomial basis expansion
Think of this as a special kind of puzzle-making tool called adaptive Markov chain Monte Carlo. It's like a clever game where the scientists use random guesses to figure out the correct pieces (the noise levels) and swap them around until they get it just right – all without getting stuck in an infinite loop!
Technical definition
A mathematical representation where the coefficients associated with a Bernstein polynomial expansion are matrices, rather than scalars.