You can update the document in the index quite frequently. IDNK what your requirement is, another option would be to boost query time.
On Sun, Jan 22, 2012 at 5:51 AM, Bing Li <lbl...@gmail.com> wrote: > Dear Shashi, > > Thanks so much for your reply! > > However, I think the value of PageRank is not a static one. It must update > on the fly. As I know, Lucene index is not suitable to be updated too > frequently. If so, how to deal with that? > > Best regards, > Bing > > > On Sun, Jan 22, 2012 at 12:43 PM, Shashi Kant <sk...@sloan.mit.edu> wrote: >> >> 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 >> >> > >
