An unsupervise learning alogorithm, decide that the data can be assigned to two different groups or two different clusters.
Google news put them together in the same clusters. words
zoo Instead the algorithm has to figure out on his own without supervision. So that's why this clustering algorithm, is type of unsupervised learning.
Second example of unsupervied learning applied to clustering genetic or DNA data. This image shows a picture of DNA micro array data, And each column represents the genetic or DNA activit of one person. Unsupervised learning can automatically find structure into data. And automatically figure out whether the major types of individuals.