Add LDAHelper Object to Lucene Index

[doofuslarge]

Currently, the LDAHelper class (which encapsulates all the LDA functionality) is serialized and written to disk at index time, and then read back again at query time. This is a little clumsy, as it requires the user to specify a filepath for the serialized object at index time, and then regurgitate the same path at query time. It would be easier (and perhaps cleaner) to add all the information in the LDAHelper class to the Lucene index itself. Is this possible? How can we do this?