Hi, I'm building a system where I want to show only results indexed in the past few days. Furthermore, I don't want to maintain a giant index with millions of documents if I only want to return results from a couple of days (thousands of documents).
My system heavily relies that the occurrences of terms in documents stored in the index have a realistic distribution (consequently: realistic IDF). That said, I would like to use a small index to return results, but I want to compute documents score using a IDF from a much greater Index (or even an external source). The Similarity API doesn't seem to allow me to do this. The *idf* method does not receive as parameter the term being used. Another possibility is to use TrieRangeQuery to make sure the documents shown are within the last couple of days. Again, I rather not mantain a large index. Also this kind of query is not cheap. Am I missing something? Thanks Felipe Hummel
