Hi Joel, thanks for the answer. I'm not really a stats guy, but the end result of all this is supposed to be obtaining R^2. Is there no way of obtaining this value, then (short of iterating over all the results in the hitlist and calculating it myself)?
On Fri, Feb 23, 2018 at 12:26 PM, Joel Bernstein <joels...@gmail.com> wrote: > Typically SSE is the sum of the squared errors of the prediction in a > regression analysis. The stats component doesn't perform regression, > although it might be a nice feature. > > > > Joel Bernstein > http://joelsolr.blogspot.com/ > > On Fri, Feb 23, 2018 at 12:17 PM, John Smith <localde...@gmail.com> wrote: > > > I'm using solr, and enabling stats as per this page: > > https://lucene.apache.org/solr/guide/6_6/the-stats-component.html > > > > I want to get more stat values though. Specifically I'm looking for > > r-squared (coefficient of determination). This value is not present in > > solr, however some of the pieces used to calculate r^2 are in the stats > > element, for example: > > > > <double name="min">0.0</double> > > <double name="max">10.0</double> > > <long name="count">15</long> > > <long name="missing">17</long> > > <double name="sum">85.0</double> > > <double name="sumOfSquares">603.0</double> > > <double name="mean">5.666666666666667</double> > > <double name="stddev">2.943920288775949</double> > > > > > > So I have the sumOfSquares available (SST), and using this calculation, I > > can get R^2: > > > > R^2 = 1 - SSE/SST > > > > All I need then is SSE. Is there anyway I can get SSE from those other > > stats in solr? > > > > Thanks in advance! > > >
