"Text Mining - Link Analysis, cluster label"

RAJ

I am trying to understand how words in a document or documents are related to each other and strength of the relationship between them. I know we can look at correlation matrix but its lots of words in that matrix to look at and in rapid miner since the window is small, its hard to look all at once. I was wondering how can understand that relationship between words. I heard SAS uses something called link analysis to understand the relationship between words, is there something in rapid miner that does visual interpretation of relationship and strength of relationship? if so, which operator is it?

Another question i have is: when i create text cluster, how do i understand whats contained in each cluster? can someone please give me some detailed step to accomplish that or refer to a resource that helps understanding to get the information i needed.

Thank you for your help in advance.