augmented hyperbooks through conceptual integration
Download
Skip this Video
Download Presentation
Augmented Hyperbooks through Conceptual Integration

Loading in 2 Seconds...

play fullscreen
1 / 17

Augmented Hyperbooks through Conceptual Integration - PowerPoint PPT Presentation


  • 59 Views
  • Uploaded on

Augmented Hyperbooks through Conceptual Integration. G. Falquet L. Nerima J.-C. Ziswiler Information System Interfaces – University of Geneva cui.unige.ch/isi. interface = generated hyperdocuments. Context: Hyperbook model. Virtual document model. domain ontology. interface

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Augmented Hyperbooks through Conceptual Integration' - denton-thornton


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
augmented hyperbooks through conceptual integration

Augmented Hyperbooksthrough Conceptual Integration

G. Falquet

L. Nerima

J.-C. Ziswiler

Information System Interfaces – University of Geneva

cui.unige.ch/isi

context hyperbook model
interface

=

generated hyperdocuments

Context: Hyperbook model

Virtual document model

domain ontology

interface

specification

information fragments

FNZ - Augmented Hyperbooks

context library of hyperbooks
O

O

O

O

F

F

F

F

Context: Library of Hyperbooks
  • Augmented reading in a digital library
  • Enrich one hyperbook with contents coming from others

HT+

HT

FNZ - Augmented Hyperbooks

augmentation through ontology alignment
Augmentation through Ontology Alignment

1. Align the book ontologies

  • compute concept similarities

sij

O

similarity

links

F

FNZ - Augmented Hyperbooks

augmentation through ontology alignment1
Augmentation through Ontology Alignment

2. Use similarity links to infer hypertext links

similarity

link

O

HT+

HT

F

O

F

FNZ - Augmented Hyperbooks

problem
Problem

Ontology alignment algorithms need well structured ontologies

BUT

  • Hyperbook writers are not knowledge engineers
  • HT’04 reviewer

"... nice approach … doubts about feasibility … " 

  • C. Marshall, F. Shipman. Which semantic web ?

"The difficulty of knowledge acquisition, representation and reasonsing has a long history of being underestimated …"

FNZ - Augmented Hyperbooks

this study
This study
  • Alignment method that works with less formalized (incomplete) ontology
  • Test on two "realistic" hyperbooks

Sources

    • Multifunctional agriculture

site

    • World Trade Organization

(WTO)

FNZ - Augmented Hyperbooks

the hyperbooks
The Hyperbooks

WTO partial ontology

"domestic support"

"1-hour" ontology

page extracts from

WTO site

Multifunctional agriculture

web site

FNZ - Augmented Hyperbooks

alignment technique
Alignment technique
  • Adapted from [Rodriguez & Egenhofer] concept comparison method
  • Word Matching
    • compare the words in the terms

"agricultural training service" <--> "agricultural landscape"

    • stop word filtering
    • synonym resolution
  • Fragment matching (feature matching)
    • compare the fragments connected to both concepts

FNZ - Augmented Hyperbooks

similarity measure
Similarity measure

Compare the sets of words

| A  B |

| A  B | +  | A – B | + (1 - ) | B – A |

  • depends on the relative depths of a and b in the concept hierarchy

min { depth(a), depth(b) }

depth(a) + depth(b)

FNZ - Augmented Hyperbooks

sample similarity values
Sample similarity values

Word matching alone is not sufficient

  • same words used for different concepts

FNZ - Augmented Hyperbooks

similarity link creation
Similarity link creation

Create link if FM > FMt and WM > WMt

For the test hyperbooks : WMt = FMt = 0

FM

SIM(a, {b1, …, bn})

FMt

WM

WMt

FNZ - Augmented Hyperbooks

reading the augmented hyperbook
Reading the Augmented Hyperbook

Generate interface documents and links

  • original contents (fragments)
  • inferred links to relevant concepts & contents
  • inferred transclusion and expand-in-place (stretch text)

FNZ - Augmented Hyperbooks

conclusion
Conclusion

Alignment technique for "light" ontologies

  • augment hyperbooks written by non knowledge engineers
  • read hyperbooks "in a context"

Further experiments (Oct. 2005)

  • e-learning: integrate/augment hyperbooks written by students
  • collection of hyperized scientific papers (in physics)

Perspectives

  • characterization of other alignment algorithms / ontologies
  • hyperbook interface design: usability testing

FNZ - Augmented Hyperbooks

ad