calculating weighted jaccard metrics

Question

[always_learning]

 TTN    NEB  0.15952435
 TCAP   NEB  0.15952435
 TCAP   TTN  0.15952435
 MBL2   MASP1   0.87443805
 .......

I have datasets like above and I want to generate pairwise weighted jaccard index from this data? How to proceed on this?

Thanks

[Jean-Karim Heriche]

Could you give more details ? What are the items for which you want to compute the Jaccard index ? What are the weights ?
If your data is a weighted graph and you're looking to compute the Jaccard index between nodes, have a look at the igraph R package and its similarity() function.
Note that there are also many other ways of computing similarity between nodes on a graph e.g. kernels on graph nodes.