Representing Annotations in XML Document using String-Trees Model

The flexibility of XML allows document to be annotated easily. However, these annotations come from different sources like Wordnet thesaurus, POS, DTD, semantic roles etc. These annotations can either be combined in the same document or captured separately in different document. The former, though richer in annotations, may look messy and requires more parsing time. The latter needs control of document consistency. This paper proposes a string-trees model to represent XML document for multiple sources of annotations. This model extends the existing string-tree structure for linguistic content in order to support structured contents of XML document. In this paper, we describe how this model is refined and applied on XML document.