Table 1 From a purely empirical perspective, the datasets considered in the present contribution are characterised by a small link density and different percentages of positive and negative links: the connectance of U.S. Senate and U.S. House of Representatives amounts to ≃0.1 while ≃55% of links is positive; the connectance of FilmTrust amounts to ≃0.01 while ≃80% of links is positive

	FilmTrust			U.S. Senate			U.S. House of representatives
	L⁻	L⁺	c	L⁻	L⁺	c	L⁻	L⁺	c
Zero-deflated projection—naive	137.601	725.983	0.76	1.379	2.329	0.36	18.512	27.922	0.35
Zero-deflated projection—global filter	27.940	343.181	0.33	689	1.598	0.22	11.681	21.419	0.25
Zero-deflated projection—local filter	116.583	353.224	0.41	1.220	1.312	0.24	16.323	16.897	0.25
Zero-deflated projection—naive	0	1.135.278	1	34	10.406	1	14.379	117.976	1
Zero-inflated projection—global filter	77.024	667.448	0.65	3.942	5.041	0.86	47.839	67.631	0.87
Zero-inflated projection—local filter	56.803	62.057	0.10	2.897	2.337	0.50	40.982	32.693	0.56

Projections, instead, are characterised by a link density that depends on the scheme employed for filtering: overall, however, it is smaller than that of the naive projections, the local filter cutting more edges than the global one.

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