RDF Graph Measures for the Analysis of RDF Graphs

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Measures

Notation Description Value
m graph volume (no. of edges) 372,294
n graph size (no. of vertices) 173,235
dmax max degree 37,700
d+max max in-degree 37,663
d-max
Effective measure!Score: 0.04

Datasets in this domain can be very well described by means of this particular measure.

max out-degree 31,451
z mean total degree 4.3
h+
h-index, respecting in-degree
Known from citation networks, this measure is an indicator for the importance of a vertex in the graph, similar to a centrality measure. A value of h means that for the number of h vertices the degree of these vertices is greater or equal to h. A high value of h could be an indicator for a "dense" graph and that its vertices are more "prestigious". The value is computed by respecting the in-degree distribution of the graph, denoted as h+.
61
h h-index, respecting total degree 91
pmu fill, respecting unique edges only 0
p fill, respecting overall edges 0
mp
parallel edges
Based on the measure mu, this is the number of parallel edges, i.e., the total number of edges that share the same pair of source and target vertices. It is computed by subtracting mu from the total number of edges m, i.e. mp = m – mu.
118
mu
unique edges
In RDF, a pair of subject and object resources may be described with more than one predicate. Hence, in the graphs, there may exist a fraction of all edges that share the same pair of (subject and object) vertices. The value for mu represents the total number of edges without counting these multiple edges between a pair of vertices.
372,176
y reciprocity 0.143
δ
Effective measure!Score: 0.237

Datasets in this domain can be very well described by means of this particular measure.

diameter (approximated)
The diameter is the longest shortest path between a pair of two vertices in the graph (as there can be more than one path for the pair of vertices). As this requires all possible paths to be computed, this is a very computational intensive measure. We used the pseudo_diameter-algorithm provided by graph-tool, which is an approximation method for the diameter of the graph. As the graph can have many components, this algorithm very often returns the value of 1. If this should be the case for this graph, we compute the diameter for the largest connecting component.
3
PR max pagerank value 0.014
Cd+ max in-degree centrality 0.217
Cd- max out-degree centrality 0.182
Cd max degree centrality 0.217
α powerlaw exponent, degree distribution 1.79
dminα dmin for α 23
α+ powerlaw exponent, in-degree distribution 1.804
dminα+ dmin for α+ 9
σ+ standard deviation, in-degree distribution 161.817
σ- standard deviation, out-degree distribution 76.338
cv+ coefficient variation, in-degree distribution 7,529.62
cv- coefficient variation, out-degree distribution 3,552.12
σ2+ variance, in-degree distribution 26,184.642
σ2- variance, out-degree distribution 5,827.429
C+d graph centralization 0.217
z-
Effective measure!Score: 0.174

Datasets in this domain can be very well described by means of this particular measure.

mean out-degree 3.701
$$deg^{--}(G)$$
Effective measure!Score: 0.168

Datasets in this domain can be very well described by means of this particular measure.

max partial out-degree 31,449
$$\overline{deg^{--}}(G)$$ mean partial out-degree 1.203
$$deg^-_L(G)$$
Effective measure!Score: 0.098

Datasets in this domain can be very well described by means of this particular measure.

max labelled out-degree 6
$$\overline{deg^-_L}(G)$$ mean labelled out-degree 3.075
$$deg^-_D(G)$$
Effective measure!Score: 0.037

Datasets in this domain can be very well described by means of this particular measure.

max direct out-degree 31,451
$$\overline{deg^-_D}(G)$$ mean direct out-degree 3.7
z+ mean in-degree 2.15
$$deg^{++}(G)$$ max partial in-degree 37,663
$$\overline{deg^{++}}(G)$$ mean partial in-degree 1.828
$$deg^+_L(G)$$ max labelled in-degree 6
$$\overline{deg^+_L}(G)$$ mean labelled in-degree 1.176
$$deg^+_D(G)$$ max direct in-degree 37,663
$$\overline{deg^+_D}(G)$$
Effective measure!Score: 0.045

Datasets in this domain can be very well described by means of this particular measure.

mean direct in-degree 2.149
$$deg_P(G)$$ max predicate degree 100,600
$$\overline{deg_P}(G)$$ mean predicate degree 7,597.837
$$deg^+_P(G)$$ max predicate in-degree 100,600
$$\overline{deg^+_P}(G)$$ mean predicate in-degree 6,313.878
$$deg^-_P(G)$$ max predicate out-degree 37,663
$$\overline{deg^-_P}(G)$$ mean predicate out-degree 4,156.898
$$\propto_{s-o}(G)$$ subject-object ratio 0.58
$$r_L(G)$$ ratio of repreated predicate lists 0.996
$$deg_{PL}(G)$$ max predicate list degree 31,449
$$\overline{deg_{PL}}(G)$$ mean predicate list degree 223.06
$$C_G$$ distinct classes 5
$$S^C_G$$ all different typed subjects 100,600
$$r_T(G)$$ ratio of typed subjects 1

Plots

Degree distribution shown here
In-degree distribution shown here
Last update of this page: 25 March 2020 13:38:38 CET