Funding for this research was provided by:
Bundesministerium für Forschung und Technologie (01IS14013A, 01IS18037J)
Berlin Mathematics Research Center MATH+ (EXC-2046/1, project ID: 390685689)
Received: 27 August 2020
Accepted: 19 November 2020
First Online: 1 December 2020
: The authors declare that they have no competing interests.
: The code of graphKKE and data preprocessing code are available at ExternalRef removed.