3 Training Set .A Training Set made up of database tuples and their associated class labels. A tuple,X,is represented by an n-dimensional attribute vector,X=(xI,x2,...,xn),depicting n measurements made on the tuple from n database attributes, respectively,A1,42,...,An. Each tuple,X,is assumed to belong to a predefined class as determined by another database attribute called the class label attribute. DATA 9 Copyright 2019 by Xiaoyu Li.Copyright © 2019 by Xiaoyu Li. 9 3 Training Set A Training Set made up of database tuples and their associated class labels.  A tuple, X, is represented by an n-dimensional attribute vector, X=(x1, x2,…, xn), depicting n measurements made on the tuple from n database attributes, respectively, A1, A2,…, An.  Each tuple, X, is assumed to belong to a predefined class as determined by another database attribute called the class label attribute