Vector Space Classification (Chapter 14) 14/1 What is the contiguity  hypothesis? 14/2 Discuss the main  idea behind the  Rocchio  classification. 14/3 Discuss the main idea  behind the k-Nearest  Neighbor (kNN)  classification. How large k  (how many neighbors)  should we use? 14/4 Build Rocchio and 1NN classifiers for the  training set {([1,1],1),([2,0],1),([2,3],2)} and classify the document q= [1,2]. Do the classifiers agree?