explain the use of DTDs in defining the structure of XML-based documents for artificial intelligence and machine learning applications

A document type definition (DTD) is a formal declaration of how an XML document has to be structured. Mar 14, 2001 ... "ASTM Committee E31 on Healthcare Informatics develops standards related to the architecture, content, storage, security, confidentiality, ... The file format is eXtensible Markup Language (XML) in accordance with the Patent Assignment Daily XML (PADX) Version 0.3 Document Type Definition (DTD). Data Standard Support Files · DTD (Document Type Definition) [DTD, 12 KB]: This file defines the way data must be structured in the XML files to adhere to the ... These Guidelines define a large number of elements for marking up documents, all of which are formally defined within the document type declaration (DTD) files ... This OASIS Technical Memorandum is an XML expression of the Exchange subset of the full CALS table model DTD described in OASIS Technical Memorandum 9502:1995. A Document Type Definition (DTD) describes the content and hierarchy of Extensible Markup Language (XML) tags that are used by an organization to define data ... The product does not restrict a reference to a Document Type Definition (DTD) to the intended control sphere. This might allow attackers to reference arbitrary ... The Document Type Definition (DTD) provides metadata describing the structure of an XML document. It can be used by validating XML parsers. In this appendix, we discuss Document Type Definitions (DTDs), which define an XML document's structure (e.g., what elements, attributes, etc. are permitted in ...