2018/01/01 by Andrew Knyazev · 4 citations
Chemistry · Mathematics · Physics and Astronomy · #Algebraic connectivity #Artificial intelligence #Combinatorics #Complex Network Analysis Techniques #Computer science #Contrast (vision) #Discrete mathematics #Eigenvalues and eigenvectors #Graph #Graph theory and applications #Laplace operator #Laplacian matrix #Line graph #Mathematical analysis #Mathematics #Physics #Signed graph #Simple (philosophy) #Spectral graph theory #Synthesis and Properties of Aromatic Compounds #Voltage graph
paper · pdf · doi:10.1137/1.9781611975215.2
published in Society for Industrial and Applied Mathematics eBooks, 11-22 (Society for Industrial and Applied Mathematics)
openalex publication_date 2018/01/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We argue that the standard graph Laplacian is preferable for spectral partitioning of signed graphs compared to the signed Laplacian. Simple examples demonstrate that partitioning based on signs of components of the leading eigenvectors of the signed Laplacian may be meaningless, in contrast to partitioning based on the Fiedler vector of the standard graph Laplacian for signed graphs. We observe that negative eigenvalues are beneficial for spectral partitioning of signed graphs, making the Fiedler vector easier to compute.