slide1 l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Yannis Kalfoglou, John Domingue, Enrico Motta, Maria Vargas-Vera, Simon Buckingham Shum The Open University PowerPoint Presentation
Download Presentation
Yannis Kalfoglou, John Domingue, Enrico Motta, Maria Vargas-Vera, Simon Buckingham Shum The Open University

Loading in 2 Seconds...

play fullscreen
1 / 12

Yannis Kalfoglou, John Domingue, Enrico Motta, Maria Vargas-Vera, Simon Buckingham Shum The Open University - PowerPoint PPT Presentation


  • 338 Views
  • Uploaded on

myPlanet : an ontology-driven Web-based personalised news service. Yannis Kalfoglou, John Domingue, Enrico Motta, Maria Vargas-Vera, Simon Buckingham Shum The Open University. Presented by Sang Su Lee. Figures liberally borrowed from paper. Need for the personalised information service.

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 'Yannis Kalfoglou, John Domingue, Enrico Motta, Maria Vargas-Vera, Simon Buckingham Shum The Open University' - Sharon_Dale


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
slide1

myPlanet: an ontology-driven Web-based

personalised news service

Yannis Kalfoglou, John Domingue, Enrico Motta,

Maria Vargas-Vera, Simon Buckingham Shum

The Open University

Presented by Sang Su Lee

Figures liberally borrowed from paper

slide2

Need for the personalised information service

Research goals

  • Finding interesting stories for himself/herself is non-trivial.
  • Can be fulfilled by part of an ontology that is tailored to a specific service.
  • Using lowest-common-denominator medium: an email message.
  • To improve and ease ontology usability for web users by means of ontology
  • driven web-based front-ends to personalised services
  • To provide lightweight means for ontology maintenance triggered by users’
  • input by deploying IE techniques along with domain specific templates.

Introduction

myPlanet: an ontology-driven Web-based personalised news service

slide3

User Types

Activities

What is PlanetOnto?

PlanetOnto

myPlanet: an ontology-driven Web-based personalised news service

- A kind of news publishing system

  • An integrated suite of tools
  • Allow ontology-driven document formalization
  • Augment standard browsing and search facilities with deductive knowledge retrieval
  • Journalist : send stories to KMi Planet
  • Knowledge editors : maintain Planet ontology and the Planet knowledge base
  • Readers : read the Planet stories
  • Story submission
  • Story reading
  • Story annotation
  • Provision of customized alerts
  • Ontology editing
  • Story soliciting
  • Story retrieval and query answering
slide4

What is myPlanet?

Ontological interest-profiling

Populating the ontology

myPlanet?

myPlanet: an ontology-driven Web-based personalised news service

  • web based newsletter by creating a profile based on an ontology.
  • to improve and ease ontology usability for web users by means of ontology-driven front-ends to personalized services.
  • to provide lightweight means for ontology maintenance triggered by users’ input by deploying IE techniques along with domain specific templates.
slide5

Advantage of using ontology

Structure of interests

Ontological interest-profiling

myPlanet: an ontology-driven Web-based personalised news service

  • read only the e-Stories of their interest
  • reason about the categories selected by applying ontology-driven deductive heuristics
  • find implicitly related e-Stories
  • Research areas that are investigated in KMi
  • Research themes that are investigated in KMi
  • Organizations that KMi collborates with
  • Projects in KMi
  • Technologies used in KMi
  • Application domains that are investigated in KMi
  • People – members of the KMi lab
slide6

String matching with cue phrases and cue words

Using OCML language

Ontological interest-profiling

myPlanet: an ontology-driven Web-based personalised news service

  • OCML supports the construction of knowledge models by means of several types of constructs.
  • It allows the specification and operationalization of functions, relations, classes and rules.
  • abstraction of the category that is associated with
  • evidence that e-Story which contains it is relevant to that category
slide7

Example of myPlanet

myPlanet: an ontology-driven Web-based personalised news service

1

slide8

Example of myPlanet

myPlanet: an ontology-driven Web-based personalised news service

slide9

Template-driven information extraction

Populating the ontology

myPlanet: an ontology-driven Web-based personalised news service

  • domain specific templates
  • based on typology of events
  • ex) visiting-a-place-or-people, academic-conference, event-involving-project
  • key is the trigger word
  • ex) [ _, X, _, visited, Y, from, Z, _ ]
slide10

Example of ontology population

myPlanet: an ontology-driven Web-based personalised news service

Visiting-a-place-or-people

[ _, X, _, visited, Y, from, Z, _ ]

Visitor: “AKT collaborating institutions”

Place: “Sheffield”

Date: January 29-31 2001”

(def-instance visit-of-akt-collaborating-institutions

visiting-a-place-or-people

((has-duration ‘3 days’)

(start-time january-29-2001)

(end-time january-31-2001)

(has-location sheffield)

(visitor akt-collaborating-institutions)))

slide11

Extending type of output

Extending the usage of IE techniques with domain specific templates

Automation by deploying inductive learning algorithms

Avoidance of duplications or omissions of information

Ontology-based reasoning

Future work

myPlanet: an ontology-driven Web-based personalised news service

  • reason about the kind of output that will be dispatched to the user by analysing his/her profile
  • suggestions about potential collaborators on a research topic
slide12

Thank you

myPlanet: an ontology-driven Web-based personalised news service