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Table 2 Summary of symbols and abbreviations used in text and figures

From: Concept networks of students’ knowledge of relationships between physics concepts: finding key concepts and their epistemic support

Symbol/Abbreviation

Symbol/Abbreviation

W

Weighted adjacency matrix

D IN

Strength, in-coming links

w ij

Element ij of matrix W

D OUT

Strength, out-going links

a ij

Element ij of unweighted adjacency matrix

G IN

Communicability, in-coming links

β

Epistemic weight parameter

G OUT

Communicability, out-going links

\(\phantom {\dot {i}\!}S_{g,g^{\prime }}\)

Similarity of networks g and g

COLL

Collated network

Z

Z-scores

AVER

Averages