def get_fset(name, params=None):
	"""Get an instance of a FuzzySet with a given name and params
	:param name: name of fuzzy set class in package fsets
	:param params: parameters for fuzzy set
	"""
	name_ = name.lower()
	module = __import__('fsets.'+name_, fromlist=(name,))
	class_ = module.__dict__[name]
	params = params or []
	fset = class_(*params)
	return fset