Dmt week 3
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Leiden University. The university to discover. DMT Week 3. Adriaan van der Weel and Peter Verhaar. Leiden University. The university to discover. Where do we stand?. Leiden University. The university to discover. Principles of markup. HTML: Document instance (your CV) Stylesheet (css)

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DMT Week 3

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Dmt week 3

Leiden University. The university to discover.

DMT Week 3

  • Adriaan van der Weel and Peter Verhaar


Where do we stand

Leiden University. The university to discover.

Where do we stand?


Principles of markup

Leiden University. The university to discover.

Principles of markup

  • HTML:

    • Document instance (your CV)

    • Stylesheet (css)

  • Application

    • Document instance (your CV)

    • Stylesheet (css)

    • DTD/Schema

    • Add: Prologue (XML decl.; DTD)


Dmt week 3

Leiden University. The university to discover.

Text and markup


Knowledge representation

Leiden University. The university to discover.

Knowledge representation

  • Structure and content

  • Ontology

    • What knowable things exist

    • What are the relationships that hold between them

    • Tree diagram

  • The book has structure and content: chapters, paragraphs, footnotes, etc.

  • XML represents structure and content

  • Various ontologies - various DTDs


Xml basics 1

Leiden University. The university to discover.

XML Basics 1

  • Elements <p>...</p>

  • Attributes <title type=play>...</title>

  • Entities

    • Character: &#xE8; = è

    • General entities, referencing:

      • Chunks of text defined elsewhere

      • Text or image files, etc.

      • E.g., <p>The &BTCP; aims to ... </p>

  • Well-formedness, validation

  • Prologue (XML decl.; DTD)


Xml basics 2

Leiden University. The university to discover.

XML Basics 2

  • Open standard (cf de facto standard):

    • Publicly available

    • Royalty-free

    • Fully and publicly documented

  • NB: ‘Who owns your data?’

  • (Lower) ASCII and Unicode:

    • Platform and software independent

    • Software independent

    • Device independent


Open standards 1

Leiden University. The university to discover.

Open standards 1

  • Open standards in a networking world

  • Why?

  • Which? E.g., Internet Protocol Suite:

    • Link layer (physical/data, e.g., ethernet)

    • Internet layer, facilitating transport, e.g., IP

    • Transport layer, e.g. TCP

    • Application layer, e.g., HTTP, SMTP, FTP


Open standards 2

Leiden University. The university to discover.

Open standards 2

  • E.g.:

    • File format: Pdf, txt

    • Programming language: PHP, Linux

    • Style language: CSS, XSLT

    • Markup metalanguage: SGML, XML

    • Markup language: DocBook, HTML, EAD, TEI


Tei basics

Leiden University. The university to discover.

TEI basics

  • Text Encoding Initiative, 1987

  • Text exchange in the humanities

  • TEI is a DTD

    • TEI is a collection of DTD fragments or modules

  • Platform and software independent (ASCII); open standard; open source

  • Used in an XML application (diagram)

  • Document ‘instances’ should be validated against the TEI DTD


Tei dtd

Leiden University. The university to discover.

TEI DTD

  • The TEI DTD is modular. We use:

    • <!DOCTYPE TEI PUBLIC "-//TEI P5//DTD Main Document Type//EN" "http://www.tei-c.org/release/xml/tei/schema/dtd//tei.dtd" [

  • <!ENTITY % TEI.header "INCLUDE">

  • <!ENTITY % TEI.core "INCLUDE">

  • <!ENTITY % TEI.textstructure "INCLUDE">

  • <!ENTITY % TEI.transcr "INCLUDE">

  • <!ENTITY % TEI.linking "INCLUDE">

  • <!ENTITY % TEI.namesdates "INCLUDE">

  • ]>

  • http://www.tei-c.org/release/xml/tei/schema/dtd/


  • Why this rigmarole

    Leiden University. The university to discover.

    Why this rigmarole?

    • Print (‘Order of the Book’):

      • Author’s brain > Book > reader’s brain

      • Instrument: typography

    • Digital (‘Digital Order’?):

      • Author’s brain > Computer > reader’s brain

      • Instrument: markup

      • For both typography(=form) and content

    • So: Need to make text intelligent


    Using the computer um

    Leiden University. The university to discover.

    Using the computer / UM

    • Author’s brain > Computer > reader’s brain

    • Vary output format (paper, pdf, html, mobile phone, etc.)

    • Exchange

    • Reuse

    • Search and select

    • Count

    • Change content (order) and form

    • Etcetera


    New research questions

    Leiden University. The university to discover.

    New research questions?

    • Chris Anderson (The Long Tail), in Wired ‘The end of theory’

    • But: need for hypothesis remains

    • But: humanities data:

      • Quantity: not such a wealth of data. Bitty. Discontinuous.

      • Quality: narrative, evaluative, ambiguous, subjective, conceptual

    • Who decides the agenda? Need to lead, rather than follow.


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