Kouichi Hirata, Yoshiyuki Yamamoto, Tetsuji Kuboyama. Improved MAX SNP-Hard Results for Finding an Edit Distance between Unordered Trees. In Raffaele Giancarlo, Giovanni Manzini, editors, Combinatorial Pattern Matching - 22nd Annual Symposium, CPM 2011, Palermo, Italy, June 27-29, 2011. Proceedings. Volume 6661 of Lecture Notes in Computer Science, pages 402-415, Springer, 2011. [doi]
Abstract is missing.