Leiden University. The university to discover.

DMT Week 5

Adriaan van der Weel and Peter Verhaar

Leiden University. The university to discover.

Last week’s lecture- Metadata and their role- Some metadata standards:

- TEI header- Dublin Core- EAD- Marc21

- Mapping and exporting metadata- ‘Crosswalking’ (e.g. Shelfmark >

Call number)

Leiden University. The university to discover.

Last week’s seminar- The TEI header

Leiden University. The university to discover.

Presentation 1 (Analogue)- Fixing the text: books / print

- Ideal text- Form- Content

- Entire text- Stability of form and content- Fixity- Inseparability of form and content!

Leiden University. The university to discover.

Presentation 2 (Digital)- Digital text:- Separates form from content:

- Fluidity of form and content- Lack of closure

Leiden University. The university to discover.

Using computers to fix text- Wysiwyg in DTP, word processing- Homo typographicus- End product stable print- XML can also output for print

(e.g., .pdf)- This involves an equation between

typography and document structure- XML deals with more than document

structure

Leiden University. The university to discover.

Using the computer’s power

- XML explicitly represents implicit information:- Structural functions of elements

(cf. typography)- Relationships (OHCO)- Facts (e.g., dates, events, people)- Etcetera

- All of this can be found and interpreted through a stylesheet

Leiden University. The university to discover.

Presentation is a particular view of the data

Leiden University. The university to discover.

Leiden University. The university to discover.

Stylesheets- Stylesheets can be used to

- Vary graphic appearance- Vary content

• Vary order of content• Selectively show/hide content (e.g. in

showing search results)

- NB:- Also affects interpretative

encoding• E.g., normalised dates

Leiden University. The university to discover.

Technologies- Anastasia

- Chaucer Project- Institute for New Testament

Research, Münster- Leiden Armenian Lexical Textbase)- Book Trade Correspondence

Project

- eXtensible Style Language (XSL)

Leiden University. The university to discover.

XSL- Makes use of XML’s OHCO:

- Hierarchical tree- Document as a collection of nodes

• Root, element, attribute, text nodes

- Element relationships: • parent, child, sibling

- XSLT document consists of- style templates to apply to nodes

Leiden University. The university to discover.

The XSLT processor- XSLT processor traverses the XML

document tree. It:- Matches style templates with

nodes in the tree- Carries out the instruction

contained in the template- Outputs the result

- XSLT processors are found in browsers (e.g., Firefox, Internet Explorer, Safari) and editors (Oxygen)