Currently Google is trying to run all the algorithms on a global scale. About this stated the company's employee Gary Illyes on Twitter.
@gertjeza @JohnMu nowadays we're working hard launching everywhere at once
— Gary Illyes 26 Jan 2017
Previously, Google launched algorithms in certain regions, and then expanded them into other countries. For example, the filter Panda was first launched in English-speaking regions, and then spread around the world. This strategy was associated with that Panda analyzes page content, so adding support for different languages took a time. Penguin was started immediately on a global scale. This algorithm evaluates links, language here is not as important.
