RDF Graph Measures for the Analysis of RDF Graphs

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lak-dataset

Data and Resources

Measures

Notation Description Value
m graph volume (no. of edges) 98,583
n graph size (no. of vertices) 35,177
dmax max degree 7,885
d+max max in-degree 7,885
d-max max out-degree 527
z mean total degree 5.605
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+.
49
h h-index, respecting total degree 117
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.
28,343
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.
70,240
y reciprocity 0.096
δ
Effective measure!Score: 0.08

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.
1
PR max pagerank value 0.012
Cd+ max in-degree centrality 0.224
Cd- max out-degree centrality 0.015
Cd max degree centrality 0.224
α powerlaw exponent, degree distribution 3.18
dminα dmin for α 73
α+ powerlaw exponent, in-degree distribution 2.358
dminα+ dmin for α+ 17
σ+ standard deviation, in-degree distribution 47.872
σ- standard deviation, out-degree distribution 12.326
cv+ coefficient variation, in-degree distribution 1,708.2
cv- coefficient variation, out-degree distribution 439.843
σ2+ variance, in-degree distribution 2,291.731
σ2- variance, out-degree distribution 151.943
C+d graph centralization 0.224
z-
Effective measure!Score: 0.055

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

mean out-degree 6.846
$$deg^{--}(G)$$ max partial out-degree 164
$$\overline{deg^{--}}(G)$$ mean partial out-degree 1.834
$$deg^-_L(G)$$
Effective measure!Score: 0.062

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

max labelled out-degree 19
$$\overline{deg^-_L}(G)$$ mean labelled out-degree 3.734
$$deg^-_D(G)$$
Effective measure!Score: 0.082

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

max direct out-degree 191
$$\overline{deg^-_D}(G)$$ mean direct out-degree 4.878
z+ mean in-degree 2.829
$$deg^{++}(G)$$ max partial in-degree 7,885
$$\overline{deg^{++}}(G)$$ mean partial in-degree 1.598
$$deg^+_L(G)$$
Effective measure!Score: 0.08

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

max labelled in-degree 10
$$\overline{deg^+_L}(G)$$ mean labelled in-degree 1.771
$$deg^+_D(G)$$ max direct in-degree 7,885
$$\overline{deg^+_D}(G)$$
Effective measure!Score: 0.057

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

mean direct in-degree 2.016
$$deg_P(G)$$ max predicate degree 17,358
$$\overline{deg_P}(G)$$ mean predicate degree 1,792.418
$$deg^+_P(G)$$ max predicate in-degree 13,688
$$\overline{deg^+_P}(G)$$ mean predicate in-degree 977.436
$$deg^-_P(G)$$ max predicate out-degree 12,038
$$\overline{deg^-_P}(G)$$ mean predicate out-degree 1,121.909
$$\propto_{s-o}(G)$$ subject-object ratio 0.4
$$r_L(G)$$ ratio of repreated predicate lists 0.944
$$deg_{PL}(G)$$ max predicate list degree 4,427
$$\overline{deg_{PL}}(G)$$ mean predicate list degree 17.843
$$C_G$$
Effective measure!Score: 0.168

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

distinct classes 7,177
$$S^C_G$$ all different typed subjects 6,697
$$r_T(G)$$ ratio of typed subjects 0.465

Plots

No degree distribution available

No in-degree distribution plot available

Last update of this page: 25 March 2020 13:38:37 CET