I may be wrong, but I think the OP is asking if this method can be used to identify related graphs based on similarity. Take, for example, a graph of someone's

I may be wrong, but I think the OP is asking if this method can be used to identify related graphs based on similarity. Take, for example, a graph of someone's movements between locations on a daily basis. Although not exactly the same, there may be similarities that reveal the person the graph relates to. See https://arxiv.org/pdf/1904.05003 https://arxiv.org/pdf/1904.05003 For example