content_image/398035.jpg content_image/398036.jpg content_image/398032.jpg content_image/398033.jpg content_image/398034.jpg
<img src='content_image/398035.jpg'>

<img src='content_image/398036.jpg'>

distribution ( A and B ) is defined as, 

If we cluster a$_{i}$ and a$_{j}$ into a$_{i}$$_{&}$$_{j}$ leads to 

The difference between values of I after and before clus- 

<img src='content_image/398032.jpg'>

<img src='content_image/398033.jpg'>

tering is given by 

<img src='content_image/398034.jpg'>

