A regular-expression dictionary, as opposed to an exact-match dictionary, is constructed for utilization within computerized textual analysis. One or more data types are defined for entries within the regular-expression dictionary, within a markup-language schema. A structure in the markup-language schema is provided that encompasses the data types of the entries within the regular-expression dictionary. For each of a number of entries of the regular-expression dictionary, a mapping methodology is defined between a source definition of the entry to the structure and the data types within the markup-language schema. Furthermore, a definition of the entry is mapped to the data types within the structure of the markup-language schema, using the mapping methodology defined. The markup language may be eXtensible Markup Language (XML), or another type of markup language.