This problem is regarding graph theory

I am doing my final year research based on graph theory.

First part of research is making network and sociomatrics for the users in the dataset.

In order to do that need to know how to assign weight for the edges.

I have few variables namely

1. Call count

2. call charge

3. Call duration

I want to know how do decide the weight of the edge based on these variables.

Does call count can be taken as a weight of the edge

Thank you