Method getMissingDropped

JSAT/src/jsat/DataSet.java:439–453

This method returns a dataset that is a subset of this dataset, where only the rows that have no missing values are kept. The new dataset is backed by this dataset. @return a subset of this dataset that has all data points with missing features dropped

()

     * features dropped
     */
    public Type getMissingDropped()
    {
        List<Integer> hasNoMissing = new IntList();
        for (int i = 0; i < getSampleSize(); i++)
        {
            DataPoint dp = getDataPoint(i);
            boolean missing =  dp.getNumericalValues().countNaNs() > 0;
            for(int c : dp.getCategoricalValues())
                if(c < 0)
                    missing = true;
            if(!missing)
                hasNoMissing.add(i);
        }
        return getSubset(hasNoMissing);
    }
    
    /**
     * Splits the dataset randomly into proportionally sized partitions.