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Cornelia Haber- 1The MeDoc-Project: Meta Data13.10.97

The MeDoc Project:

Meta Data

Cornelia Haber, Universit t Oldenburg

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Project Partners

Project Aims

Motivation, Goals, ...

MeDoc Service

Architecture, Components, ...

Full Text ServerRequirements, Functionality, ...

Document Model

Attributes supported, Document Structure, ...Meta Data Administration

Scripts, ...

Conclusion

Contents

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Project Partners

FU Berlin

Uni Bonn

Uni Dortmund

FernUni Hagen

FIZ Karlsruhe

TU M nchen

OFFIS Oldenburg

Springer-Verlag

Consortium:

GI (German Computer Science Society)

Fachinformationszentrum Karlsruhe

Springer- Verlag

Development Team:

With the help of:12 Publishing Houses

23 Pilot User Institutions

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Motivation

State of the art

Information needs

finding information

choosing relevant information

Information flooding

exponential growth of scientific literature publications

information distribution over the Internet

CONTRADICTION

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Project Aims

To offer

a critical mass of high quality computer science literature

in form of electronic documents

as full-texts

over the Internet

Development and evaluation ofuser-oriented tools

economical forms to acquire, provide and use electronic documents

Conception of an information brokering service for

heterogeneous

distributed databases

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MeDoc-Service: Architecture

Accessing the MeDoc-Library:

1. Provider Registration

2. User Query

3. Provider Selection

4. User Query5. Document References

6. Browse Order

7. Document

Client Client

Broker

Provider Agent Provider Agent

Database Database

User Agent User Agent

1

3

4 56 7

2

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Requirements on FTS

Full Text Server is special Provider Agent

Functionality to be supported by the Full Text Server:

Delivery of Meta Data ( Broker)

Meta Data:

BibTeX attributes objecttype (type of document, e.g. book, journal, ...)

keywords

classification (ACM)

Meta Data is description of all documents of a providerMeta Data is calculated as

sum of the weights of a word over all documents

number of documents

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Requirements on FTS

Searching

Query in MeDoc-Query-Language

(Attributes linked with AND, OR, WSUM)

MeDoc attributes

Document Delivery

physical / logical document structureNavigation

hierarchy within the attributes

hierarchy within a document

navigation according to attributes

Document Model

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Document Model

The document model contains

bibliographic and content description attributes

information about document module full text

sample

abstract

table of context

index

glossary

...

information about document hierarchy

logical document structure

physical document structure

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Document Model

Textfragment

Structured Text

Journal

Literary Item

Volume Issue

Collection Subchapter

Proceedings

Book Subchapter

Series

Misc

Chapter

Article

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Administration

Inserting new documents

batch oriented

LitiScript contains bibliographic and structural data

Changing existing documents

only simple changes otherwise:delete and insert

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Liti Script (1)* Zuerst die Textfragmente */

@fragment{appelrathbuch,

file="Books/appelrath/Skriptum.Informatik.html",

file="Books/appelrath/0.0_Vorwort.html",

file="Books/appelrath/chars/*.gif",

sub={sample,

sub={titel,

file="Books/appelrath/Skriptum.Informatik.html",

file="Books/appelrath/Skriptum.Informatik.anc.gif",

file="Books/appelrath/chars/topg.gif",

file="Books/appelrath/chars/next.gif",

file="Books/appelrath/chars/inhalt.gif",file="Books/appelrath/chars/index.gif",

file="Books/appelrath/chars/prevg.gif"

},

sub={inhalt,

file="Books/appelrath/SkriptumTOC.doc.html"

},

/* Anhang */

file="Books/appelrath/A.1_Anhang_A_Mathematik.html",

file="Books/appelrath/A.2_Anhang_B_Syntax*.html",

/* Literatur */

file="Books/appelrath/A.3_Literatur.html",

/* Abkuerzungsverzeichnis */

file="Books/appelrath/A.4_Abkuerzungen.html",

/* index */

file="Books/appelrath/SkriptumIX.doc.html",

/* Die Kapitel */

sub={chapter1,

file="Books/appelrath/1.1_Grundlagen.html",

file="Books/appelrath/1*.html",

file="Books/appelrath/1*.gif",

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Liti Script (2)/* Die Literary Items */

@item{buch,

type="book",

author="Hans-Juergen Appelrath",author="Jochen Ludewig",

title="Skriptum Informatik - eine konventionelleEinfuehrung",

date="95-01-01",

publishedby="Teubner Verlag",

docid="B 3-519-22153-5"

}

@item{chapter1,

type=chapter,

super=buch,

title="Grundlagen",

number="1",

docid="B 3-519-22153-5/1"

}

/* Die Strkturelemente */@structtext{

item=buch, fragment=appelrathbuch,

component=fulltext, format=html, usage=any

}

@structtext{

item=buch, fragment=inhalt,

component=toc, format=html, usage=any}

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alternative for LitiScript

better: Liti Script in form of an SGML-document

there is a DTD for MeDoc Meta Data

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alternative for Liti Script

still better: architectural forms:

assignment of the elements in a specific DTD to a general

class with known semanticassociates attributes with that meta element type

no predefined names

idref IDREF #REQUIRED

HyTime NAME #FIXED clink>

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Conclusion

MeDoc Meta Data schema is rather detailed

MeDoc Meta Data schema allows for functionality

enhancements

Administration of Meta Data is to be supported

Proprietary Meta Data solution

MeDoc Meta Data may be mapped to Dublin Core

further information about MeDoc:

http://medoc.informatik.tu-muenchen.de

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Thanks for your attention

Do you have comments, questions, etc?

[email protected]@informatik.tu-muenchen.de

haber16 10 97

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