On Nov 22, 2007, at 3:41 PM, Kent Fitch wrote: > On Nov 23, 2007 4:11 AM, Binkley, Peter <[log in to unmask]> > wrote: > >> ... >> >> If you use boost on the date field the way you suggest, remember >> you'll >> have to reindex from scratch every year to adjust the boost as items >> age. > > > Or maybe just use a method such that 2007 dates boost the document > by 3.0, > 2008 dates by 3.1, 2009 by 3.2 ... Whether this is feasible > depends on how > else you are expecting other scoring boosts to interact with document > intrinsic boosts. Don't do date boosting at index time, but rather tune things on the query end, using FunctionQuery and such. That'll give you maximum flexibility. Erik