"0 8 0 0 2"

These 5 numbers define the geometric space used in GNP. The first 0 means an N-dimensional space is used. 8 specifies that 8 dimensions are used. The next two zeros are not explained here, leave them as is. The last number 2 specifies the Euclidean norm (i.e. L2 norm) is used. Changing the second number will change the number of dimensions used. Changing the last number to 1 will cause the Manhattan norm (i.e. L1 norm) to be used.