1 citations · 1 across the 2 of their papers we have counts for
3 papers
Directed Intersection Representations and the Information Content of Digraphs
Xujun Liu, Roberto Machado, Olgica Milenkovic
Consider a directed graph (digraph) in which vertices are assigned color sets, and two vertices are connected if and only if they share at least one color and the tail vertex has a…
Weights which respect support and NN-decoding
Roberto Assis Machado, Marcelo Firer
In this work we explore a family of metrics over finite fields which respect the support of vectors. We show how these metrics can be obtained from the edge-weighted Hamming cube a…
Combinatorial metrics: MacWilliams-type identities, isometries and extension property
Jerry Anderson Pinheiro, Roberto Assis Machado, Marcelo Firer
In this work we characterize the combinatorial metrics admitting a MacWilliams-type identity and describe the group of linear isometries of such metrics. Considering coverings that…