: > omitNorms: do I need it for full-text fields even if I don't need index-time : > boosting? I don't want to boost text where keyword repeated several time. Is : > my understanding correct?
if you omitNorms="true" then you not only lose index-time doc/field boosting, but you also loose lengthNorms -- it won't matter how long a field is, if a term occurs once in a 5 term field value it will score the same as if it appears once in a 5000 term field value. if you don't wnat docs to score higher when the word is repeated omitNorms won't help you -- you'll need a custom similarity where you override the tf() method. : > What are memory requirements for Lucene caches warming up if I use term : > vectors and norms? : : I don't believe Term Vectors are cached anywhere, other than via the OS. I'd : have to go dig around for norms info, or maybe someone else can chime in. norms is one byte per doc per field. -Hoss
