Use Lucene for "Frequent Itemset" computation

Just curious, has anyone tried to use Lucene to do "frequent itemset" computation for auto-clustering. For a given pair of items/words we can use lucene and do a conjunctive search from those items. Only if we can figure out a way to minimize the number of possible itemsets. Thanks, Prasen -

Adding delta terms to the same lucene doc

Hi folks, I have a requirement where I want to keep adding deltas (incremental terms) to a particular document in a lucene index, and get these additional terms indexed to the SAME document in the index. Is there an easy/smart way to do it without changing much of lucene ? Deleting and addi