Lucene has a mechanism to "boost" up/down documents using your custom ranking algorithm. So if you come up with something like Pagerank you might do something like doc.SetBoost(myboost), before writing to index.
On Sat, Jan 21, 2012 at 5:07 PM, Bing Li <lbl...@gmail.com> wrote: > Hi, Kai, > > Thanks so much for your reply! > > If the retrieving is done on a string field, not a text field, a complete > matching approach should be used according to my understanding, right? If > so, how does Lucene rank the retrieved data? > > Best regards, > Bing > > On Sun, Jan 22, 2012 at 5:56 AM, Kai Lu <lukai1...@gmail.com> wrote: > >> Solr is kind of retrieval step, you can customize the score formula in >> Lucene. But it supposes not to be too complicated, like it's better can be >> factorization. It also regards to the stored information, like >> TF,DF,position, etc. You can do 2nd phase rerank to the top N data you have >> got. >> >> Sent from my iPad >> >> On Jan 21, 2012, at 1:33 PM, Bing Li <lbl...@gmail.com> wrote: >> >> > Dear all, >> > >> > I am using SolrJ to implement a system that needs to provide users with >> > searching services. I have some questions about Solr searching as >> follows. >> > >> > As I know, Lucene retrieves data according to the degree of keyword >> > matching on text field (partial matching). >> > >> > But, if I search data by string field (complete matching), how does >> Lucene >> > sort the retrieved data? >> > >> > If I want to add new sorting ways, Solr's function query seems to support >> > this feature. >> > >> > However, for a complicated ranking strategy, such PageRank, can Solr >> > provide an interface for me to do that? >> > >> > My ranking ways are more complicated than PageRank. Now I have to load >> all >> > of matched data from Solr first by keyword and rank them again in my ways >> > before showing to users. It is correct? >> > >> > Thanks so much! >> > Bing >>
