You could hyphenate to clarify: lesser-known libraries. But come on, the English language is ambiguous. We can figure out the meaning from the context. I'm usu

You could hyphenate to clarify: lesser-known libraries. But come on, the English language is ambiguous. We can figure out the meaning from the context. I'm usually a nit when it comes to vocabulary and grammar, but this one... Actually, maybe the title should explain more of the purpose: Machine learning libraries that should be more popular.