Xml cm and km kmworld 2001 thursday november 1 2001
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XML, CM, and KM KMWorld 2001 Thursday November 1, 2001 PowerPoint PPT Presentation

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XML, CM, and KM KMWorld 2001 Thursday November 1, 2001. Agenda. What is XML? What does it offer? What are some of the weaknesses? Trends in XML, CM, and KM. Why XML?. A critical component of KM involves knowledge representation and codification

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XML, CM, and KM KMWorld 2001 Thursday November 1, 2001

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XML, CM, and KM KMWorld 2001Thursday November 1, 2001


  • What is XML?

  • What does it offer?

  • What are some of the weaknesses?

  • Trends in XML, CM, and KM

Why XML?

  • A critical component of KM involves knowledge representation and codification

  • To support knowledge activities, computers must have access to structured collections of information and sets of inference rules that they can use to conduct automated reasoning

What is XML?

  • Structured data interchange

    • A common syntax for expressing structure in data

  • Designed to account for “unstructured” data

    • Documents

  • Inherently conveys meaning/structure

  • Content and process separate from structure

  • Delivered via standard text files

XML Example – Rich Site Summary

<?xml version="1.0"?>

<!DOCTYPE rss PUBLIC "-//Netscape Communications//DTD RSS 0.91//EN" "http://my.netscape.com/publish/ formats/rss-0.91.dtd">

<rss version="0.91" encoding= "ISO_8859-1">


<title>book news</title>


<description>Book news - headlines from around the web, refreshed every 15 minutes</description>






'Author Unknown' by Don Foster






Salon Nov 1 2001 6:51AM



XML is open

  • Open standards NOT proprietary

  • Platform neutral, license-free and widely supported

  • Influenced by a number of standards organization

  • Agreement on a number of core standards in the XML family

XML strengths

  • Flexible

    • Make collaborative information exchange simpler

  • Less expensive implementation

    • Light-weight software modules

  • Separates content from processing

  • Easily internationalized

    • Full Unicode support

  • Enables complex information retrieval

XML is flexible

  • Very flexible – you can define your own languages, vocabulary, and metadata

  • Easily extended by adding additional elements (fields) and attributes

  • Data description can be sent with the data

XML enables less expensive implementation

  • Implementation tools are modularized

    • XML browser can be implemented in less than 200K

    • HTML browser > 4MB to 80 MB

  • Standard syntax makes processing easier and therefore less expensive

    • Simple implementation of “validity checking”

  • Lower cost

    • Allow small and medium-sized organizations to participate in data exchange initiatives

XML separates content from process

  • Doesn’t impose a particular manner for processing

  • Doesn’t impose constraints on how to handle information

  • Same data can be used in web page, hand held device through simple “transformations”

    • “loosely coupled”

    • “future proof”

XML is easily internationalized

  • Unicode standard supports a wide range of languages and scripts

    • Latin (Western and Eastern European, non-western languages)

    • Greek

    • Cyrillic

    • Hebrew

    • Arabic

    • Armenian

    • Georgian

    • Thai

    • Lao

    • Hangul (Korean)

    • Ideographs (Chinese, Japanese, Korean)

    • Hiragana and Katakana (Japanese)

    • Cherokee

    • Khmer

    • Ethiopian

XML enables complex information retrieval

  • Supports encoding of metadata through both standardized and constructed tag sets

XML downsides

  • Space, processor, and bandwidth hog

  • Just a document syntax, not a full-fledged programming language

  • Doesn’t work for binary data

  • Is a regression from centralized and efficient databanks

  • Specifications are not complete

XML – just one part of the puzzle

XML and content management

  • CM systems repositories use XML for tagging and storing information

  • CM systems use XML as a standard protocol for integration with other applications

  • XML is invisible to the information creator

    • XML markup created as the information is captured

Emerging Standards For KM

  • XTM

  • OPML

  • RFML

  • FLBC

  • Industry specific standards:

  • Legal

  • Publishing

  • Scientific research

XTM: Topic Maps

  • Topic maps are a new ISO standard for describing knowledge structures and associating them with information resources

  • Used to organize information into knowledge bases

  • “GPS” for information

  • http://www.topicmaps.org/xtm/index.html

“A book without an index is like a country without a map”


  • Outline Processor Markup Language

    • Outline-structured information

  • Used for data the is easily browsed and editable

    • Specifications

    • Legal briefs

    • Product plans

    • Presentations

    • Screenplays

    • Directories


  • Relational-functional markup language

  • Used to define relationship and functions among data elements

    • Tables within relational databases

    • Relational views


  • Formal Language for Business Communication

    • Automated communication

    • Conversation management

    • Dialog management

    • Based on speech act theory

      • Formally defined message types

      • Broad range of message types

      • Defined in terms of intentions

      • Clear delineation between message type and content

XML in Use

  • Portals

  • Content management & syndication

  • Content management: industry sector

  • Integration

  • Analytical/decision making

  • Search and retrieval

  • Visualization



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