Method getTwiceShallowClone

JSAT/src/jsat/DataSet.java:780–790

Returns a new version of this data set that is of the same type, and contains a different listing pointing to shallow data point copies. Because the data point object contains the weight itself, the weight is not shared - while the vector and array information is. This allows altering the weights of

()

     * @return a shallow copy of shallow data point copies for this data set. 
     */
    public DataSet getTwiceShallowClone()
    {
        DataSet clone = shallowClone();
        for(int i = 0; i < clone.getSampleSize(); i++)
        {
            DataPoint d = getDataPoint(i);
            DataPoint sd = new DataPoint(d.getNumericalValues(), d.getCategoricalValues(), d.getCategoricalData());
            clone.setDataPoint(i, sd);
        }
        return clone;
    }
    
    /**
     * Returns statistics on the sparsity of the vectors in this data set.