Hi, I am using StandardAnalyzer(Version.LUCENE_30);
2010/6/27 tarun sapra <t.sapr...@gmail.com> > which analyzer are you usin'? > > > On Sun, Jun 27, 2010 at 7:12 AM, a peng <zhoudengp...@gmail.com> wrote: > > > Hi, > > > > I know the indexed content contains the following text: "This is a test". > > And the search phrase I used is "This is a formal test", and then I set > the > > slop of the PhraseQuery as 2 with setSlop(2), but I found that I can not > > get > > a search result. If I set the search phrase as "This is formal test", > then > > I > > can get the search result. > > > > So what is the problem here, thanks in advance. > > > > > > Attached is the Java doc for the setSlop method: > > > > public void *setSlop*(int s) > > > > Sets the number of other words permitted between words in query phrase. > If > > zero, then this is an exact phrase search. For larger values this works > > like > > a WITHIN or NEAR operator. > > > > The slop is in fact an edit-distance, where the units correspond to moves > > of > > terms in the query phrase out of position. For example, to switch the > order > > of two words requires two moves (the first move places the words atop one > > another), so to permit re-orderings of phrases, the slop must be at least > > two. > > > > More exact matches are scored higher than sloppier matches, thus search > > results are sorted by exactness. > > > > The slop is zero by default, requiring exact matches. > > > > > > -- > Thanks & Regards > Tarun Sapra >
