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! >
