“…subjects, digital images, or networks) based on common descriptor variables is an ubiquitous task in applied science. This problem, variously known as object matching, feature matching, data association, or assignment problem, is at the core of applications such as resource allocation [Pierskalla, 1968], object tracking [Thornbrue et al, 2010, Bar-Shalom et al, 2011, Dehghan et al, 2015, Rezatofighi et al, 2015, Smeulders et al, 2014, Wang et al, 2015, object recognition [Lowe, 2001, Belongie et al, 2002, Conte et al, 2004, navigation systems [Doherty et al, 2019], image registration [Le Moigne et al, 2011, Ashburner, 2007, optimization of communication networks [Shalom et al, 2010], connectomics in neuroscience [Haxby et al, 2011, Vogelstein et al, 2015, and more.…”