I did something like this sometime back. The objective was to find patterns surrounding some keywords of interest so I could find keywords similar to the ones I was looking for, sort of like a poor man's word2vec. It uses SpanQuery as Jigar said, and you can find the code here (I believe it was written against Lucene 3.x so you may have to upgrade it if you are using Lucene 4.x):
http://sujitpal.blogspot.com/2011/08/implementing-concordance-with-lucene.html -sujit On Thu, Feb 12, 2015 at 8:57 AM, Maisnam Ns <maisnam...@gmail.com> wrote: > Hi Shah, > > Thanks for your reply. Will try to google SpanQuery meanwhile if you have > some links can you please share > > Thanks > > On Thu, Feb 12, 2015 at 10:17 PM, Jigar Shah <jigaronl...@gmail.com> > wrote: > > > This concept is called Proximity Search in general. > > > > In Lucene they are achieved using SpanQuery. > > > > On Thu, Feb 12, 2015 at 10:10 PM, Maisnam Ns <maisnam...@gmail.com> > wrote: > > > > > Hi, > > > > > > Can someone help me if this use case is possible or not with lucene > > > > > > Use case: I have a string say 'Japan' appearing in 10 documents and I > > want > > > to get back , say some results which contain two words before 'Japan' > and > > > two words after 'Japan' may be something like this ' Economy of Japan > is > > > growing' etc. > > > > > > If it is not possible where should I look for such queries > > > > > > Thanks > > > > > >
