This function generates a mutation matrix (B matrix) for a tumor phylogenetic tree with a given number of nodes. This matrix represents the topology and it is created randomly, with the probability of a node to be chosen as a parent of a new node being proportional to the number of its ascendants raised to the power of a constant `k`.
Usage
create_B(n, k)
Value
A square matrix representing the mutation relationships between the nodes in the phylogenetic tree. Each row corresponds to a node, and each column corresponds to a mutation. The value at the i-th row and j-th column is 1 if the i-th node has the j-th mutation, and 0 otherwise.
Arguments
n
An integer representing the number of nodes in the phylogenetic tree.
k
A numeric value representing the constant used to calculate the probability of a node to be chosen as a parent of a new node.