@article{WittGoeckeSasakietal.2016,
  author    = {Witt, Andreas and Goecke, Daniela and Sasaki, Felix and L{\"u}ngen, Harald},
  title     = {Unification of XML Documents with Concurrent Markup},
  journal   = {Literary and Linguistic Computing},
  volume    = {20},
  number    = {1},
  issn      = {1477-4615},
  doi       = {10.1093/llc/fqh046},
  pages     = {103 -- 116},
  year      = {2016},
  abstract  = {An approach to the unification of XML (Extensible Markup Language) documents with identical textual content and concurrent markup in the framework of XML-based multi-layer annotation is introduced. A Prolog program allows the possible relationships between element instances on two annotation layers that share PCDATA to be explored and also the computing of a target node hierarchy for a well-formed, merged XML document. Special attention is paid to identity conflicts between element instances, for which a default solution that takes into account metarelations that hold between element types on the different annotation layers is provided. In addition, rules can be specified by a user to prescribe how identity conflicts should be solved for certain element types.},
  subject      = {XML (Extensible Markup Language)},
  language  = {en}
}