On Thu, Aug 27, 2015 at 4:30 AM, David Causse <dcausse@wikimedia.org> wrote:

There's another feature we could work on after this one:
Review the default AND operator between words. This seems to be in line with Moiz's survey results and "somewhat" related to the paper reviewed by Trey :
Users ask questions not keywords, for example this query :
what's the connection between power laws and zipf law [1]
returns no result

but:
power laws zipf distribution [2]
returns good results

Earlier, I suggested ignoring "filler" words, but we thought elastic was already doing scoring adjustments that would have a similar effect. Apparently not, because a search for:

connection between power laws zipf distribution

brings up what look like pretty reasonable results. Throwing away "what's", "the", and "and" before running the search would help a lot (at least in this case).