public static RegressionDataSet loadRegression(InputStream inRaw, DataStore backingStore) throws IOException
    {
        return (RegressionDataSet) load(inRaw, backingStore);
    }
public static RegressionDataSet loadRegression ( InputStream inRaw , DataStore backingStore ) throws IOException { return ( RegressionDataSet ) load ( inRaw , backingStore ) ; }
Loads in a JSAT dataset as a {@link RegressionDataSet}. An exception
will be thrown if the original dataset in the file was not a
{@link RegressionDataSet}.

@param inRaw the input stream, caller should buffer it
@param backingStore the data store to put all data points in
@return a RegressionDataSet object
@throws IOException
@throws ClassCastException if the original dataset was a not a RegressionDataSet