On 19-Apr-08, at 3:02 AM, Christian Wittern wrote:
Mike Klaas wrote:
Fragments are generated independently from matching (I realize this
isn't an ideal algorithm).
So it could be that the match is not part of the fragment? This
sounds a bit strange. Is there a way to make sure the fragment
contains the match other than returning the whole field and do the
fragmenting myself?
The highlighting algorithm is as follows:
1. fragment the whole field into N fragments
2. score each fragment based on the keyword matches (more matches
the better; prefer different keyword matching to many of the same
keyword matching). fragments that have no matching keywords do not
have a positive score.
3. return the top hl.maxSnippets fragments that score > 0
As you can see, only fragments containing a match are returned (note
that there is very often multiple matches--you seemed to assume only
one).
-Mike
