Bipartite network projection

[1] Since the one-mode projection is always less informative than the original bipartite graph, an appropriate method for weighting network connections is often required.

Optimal weighting methods reflect the nature of the specific network, conform to the designer's objectives and aim at minimizing information loss.

For the convenience of directly showing the relation structure among a particular set of nodes, bipartite networks are usually compressed by one-mode projection.

Since the redistribution of weights is found to have a strong effect on the community structure (especially in dense networks), the methodological choice must be made with care.

[5] When only the edges with statistically significant weights are retained, these algorithms yield an unweighted and typically sparse "backbone" network that can be more informative to analyze and visualize.