Hi
I'm currently using Lucene 8-6.3, and indexing a few thousand documents. Some of these documents need to be prioritised in the search results, but not by too much; e.g. an exact phrase match in a normal document still needs to top the rankings ahead of a priority document that just matches the individual words. I'm tokenising and indexing a Title field and a Content field, and storing a Category field and a Version field. Searches are executed with a standard QueryParser on Title and Content. Most documents do not have a category or a version, but if a document has the category ReleaseNote then it needs to be boosted, and the value of the boost factor should be correlated with the Version (so Version = 10 is boosted more than Version = 6, etc). Looking back through the older versions of the documentation it appears that document.setBoost might have provided something I could work with, but later versions of Lucene appear to have dropped this feature. If it still existed I expect I'd have to experiment with the actual coefficients until I got reasonable results but in principle it should be possible to arrive at a good result. I can't see how to achieve this same thing in the later versions of Lucene. Best I can come up with is to calculate a factor from the category and version number and store it as a separate field, then somehow use this field to scale up (or down) the actual scores reported for the query results. But I'm sure there must be a better way to do it - can anyone show me what it is? cheers T