Jaccard similarity returns a value between 0 and 1 (in this case the vast majority of the values being close to 0). I suspect there's a hard-coded threshold val

Jaccard similarity returns a value between 0 and 1 (in this case the vast majority of the values being close to 0). I suspect there's a hard-coded threshold value to determine an edge, e.g. if Jaccard similarity between A and B is > 0.2, create an edge.