Initial proposal to calculate reputation and relevance adapting the HITS algorithm

1. Edu-AREA
Towards the Recognition of Relevance and Reputation
in Edu-AREA
Manuel Caeiro Rodríguez, Martín Llamas Nistal, Juan Manuel Santos Gago
Universidade Vigo
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2. About TELGalicia
TELGalicia: Technology Enhanced Learning in
Galicia
Heterogeneous research groups:
✓ Pedagogical side: learning materials,
competencies, learning profiles, advertisement,
psychology, etc.
✓ Technological side: TEL systems, TEL
standards, recommendations, natural language
processing, etc.
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3. TELGalicia Goals
Contribute to teaching innovation
From technology:
✓ Content: video, simulation,
games, etc.
✓ Devices: tablets,
computers, interactive
whiteboards, etc.
✓ Applications: editors,
mapping, communication,
collaboration, etc.
From pedagogy:
✓ Collaborative.
✓ Cooperative.
✓ Problem-based.
✓ Project-based.
✓ Flipped classroom.
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4. Proposal: Edu-AREA
Open Educational Activities, Resources and Experiences
www.edu-area.com 4

5. Edu-AREA Principles
Web 2.x
Application
Open Concept Social Curation
- A referatory for
resources and a
repository for activities
and guides
-Users provide
information records
freely
- Links among elements
are created
automatically in
accordance to user
operations
“Open Educational
Resources (OERs) are any
type of educational
materials that ... any one
can legally and freely copy,
use, adapt and re-share
them”
2012 Paris OER
Declaration
use->copy->modify-
>share
Automatic classification
and ordering or
information records,
attending to:
- User’s reputation:
+refs -> +reputation
-Relevance of information
records
+use + reputation ->+
relevance
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6. what can teachers find?
Resource
Experiencies
Activities Guides
Boards
To know what to do in
teaching and how
To be used in activities
To prepare lesson plans
before teaching
To document what has
been done/produced To organize and curate
s
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7. Resources
Elements to be used
✓ Content
✓ Devices
✓ Applications
✓ Contributors
✓ Trips
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8. Activities
Proposals to carry out during
teaching/learning
✓ Guidelines for
the teachers.
✓Linked to
resources.
✓Templates are
used to support
different kinds
of formats.
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9. Guides
To prepare the lesson plan
Educational
Setting
+
Technological
Setting
+
Activities
(Resources)
Guides 9

10. Experiences
To document what happened during
teaching
✓ Reflections
✓ Outcomes
✓ Evidences
Linked to Guides
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11. Boards
Personal and social classification
✓ Curation:
‣ Categories
‣ Comments
‣ Ratings
‣ Tags
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12. What can teachers do?
✓Retain. “Own” personal copies
✓Reuse. Without modifications.
✓Revise. Modify, adjust, contextualize.
✓Remix. Combine with other.
✓Redistribute. Make public.
Discover
✓Explore
✓View
5Rs
Contribute Curate
✓Register new resources
✓Propose new activities
✓Prepare new lesson plans
✓Classify
✓Annotate
✓Assess
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13. Reputation and Relevance
Definitions:
Relevance: appropriate to the matter at hand.
Reputation: the opinion that others have about a person
Why do we need them?
• Many concepts  Rankings.
• Many users  Experts.
• Curation Quality measurement.
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14. Reputation and Relevance
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Usages
Contribution
• Retains
• Reuses
• Revisions
• Remixes
• Redistributions
s
• New resources
• New activities
• New Lesson plans
Curations
• Comments
• Ratings
• Collections

15. Reputation and Relevance
How to calculate?
• Information retrieval:
• Page Rank. Relevance of a page globally.
• HITS (Hypertext Induced Topic Search).
Relevance taking into account the topic.
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16. HITS
Pages are classified as:
Authorities. Relevant pages
for a certain topic.
Hubs. Contain pointers to
authority pages.
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17. HITS
Algorithm:
• 1. Set ai, pi (i=1,..,n) to 1
• 2. Repeat until convergence
• 2.1
• 2.2
• 3. Normalize
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18. Adapting HITS to Edu-AREA
Algorithm:
• 1. Set ri, qi (i=1,..,n) to 1
• 2. Repeat until convergence
• 2.1
• 2.2
• 3. Normalize
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19. Conclusions
Edu-AREA is an ongoing project.
1. Until now, design and implementation
2. Next stage involving users
• 3. Then, relevance and reputation
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20. Thanks
Your contribution is welcome!
www.edu-area.com
@edu-area
area.telgalicia@gmail.com
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