Since YARV has become the official Ruby interpreter for Ruby 1.9, it is also named KRI (Koichi's Ruby Interpreter), in the same vein as the original Ruby MRI, named for Ruby's creator Yukihiro Matsumoto.
YARV стал основным интерпретатором в версии Ruby 1.9, так же, его называют KRI (Koichi’s Ruby Interpreter), по аналогии с MRI (Matz’s Ruby Interpreter).