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Ed/ITLib Digital Library → Future of Open Courseware; A Case Study
My paper at Ed-Media 2008. Abstract; In 2007, Delft University of Technology started Delft OCW (Open Courseware), a project with the objective of publishing educational resources online. This paper focuses on the future of this project, and describes the results of the research on its sustainability. The advice includes (i) the development of a more decentralized environment for Open Educational Resources (OER), (ii) the involvement of other OER projects, educational institutes, private organizations, and end-users, (iii) the management and support of this environment through tools and protocols, and (iv) deploying various business and revenue models to address the full potential of the project.
Helium - Where Knowledge Rules
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Diversity in open social networks
Online communities have become become a crucial ingredient of e-business. Supporting open social networks builds strong brands and provides lasting value to the consumer. One function of the community is to recommend new products and services. Open social networks tend to be resilient, adaptive, and broad, but simplistic recommender systems can be 'gamed' by members seeking to promote certain products or services. We argue that the gaming is not the failure of the open social network, but rather of the function used by the recommender. To increase the quality and resilience of recommender systems, and provide the user with genuine and novel discoveries, we have to foster diversity, instead of closing down the social networks. Fortunately, software increases the broadcast capacity of each individual, making dense open social networks possible. Numerically, we show that dense social networks encourage diversity. In business terms, dense social networks support a long tail.
Ed/ITLib DL → Home
The EdITLib Digital Library is your source for peer-reviewed and published articles and papers on the latest research, developments, and applications related to all aspects of Educational Technology and E-Learning.
Collaborative Tagging Approaches for Ontological Metadata in Adaptive ELearning Systems
One of the main approaches for creating metadata for learn-
ing resources in adaptive e-learning systems has been through the use of
semantic web ontologies. This approach is limiting because it doesn’t usu-
ally address a requirement for the support of annotators or the require-
ment for significant effort by annotators in learning ontological metadata
domains and technologies. This paper proposes a method of addressing
these shortfalls, by incorporating techniques used on the hugely popular
collaborative tagging websites, such as del.icio.us
1
. By extending on a
natural language ontology, we aim to achieve simplicity in metadata au-
thoring while maintaining the expressiveness of a lightweight ontology.
The goal of the approach is to facilitate metadata creation such that
new metadata creators (such as students) may become involved with
creating machine consumable metadata about learning objects, for use
in adaptive e-learning systems.
Finding Communities of Practice from User Profiles Based On Folksonomies
User profiles can be used to identify persons inside a community with
similar interests. Folksonomy systems allow users to individually tag the objects of a common set (e.g., web pages). In this paper, we propose to create user profiles from the data available in such folksonomy systems by letting users specify the most relevant objects in the system. Instead of using the objects directly to represent the user profile, we propose to use the tags associated with the specified objects to build the user profile. We have designed a prototype for the research domain to use such tag-based profiles in finding persons with similar interests.
The combination of tag-based profiles with standard recommender system technology has resulted in a new kind of recommender system to recommend related publications, keywords, and persons.
Collaborative thesaurus tagging the Wikipedia way
This paper explores the system of categories that is used to classify articles in Wikipedia. It is compared to collaborative tagging systems like del.icio.us and to hierarchical classification like the Dewey Decimal Classification (DDC). Specifics and commonalitiess of these systems of subject indexing are exposed. Analysis of structural and statistical properties (descriptors per record, records per descriptor, descriptor levels) shows that the category system of Wikimedia is a thesaurus that combines collaborative tagging and hierarchical subject indexing in a special way.
Fringe Contacts: People-Tagging for the Enterprise
Tagging has arisen as way to enable users to contribute to a loose
taxonomy characterizing web pages, pictures, products and other
things. We propose tagging people in order to help individuals
keep track of each other while contributing to a loose
characterization of their friends and colleagues. “Fringe
Contacts” is a reference system designed to test whether people-
tagging is a viable and useful approach.
Improving Tag-Clouds as Visual Information Retrieval Interfaces
This paper presents a novel approach to Tag-Cloud’s tags selection, and proposes the use of clustering algorithms for visual layout, with the aim of improve browsing experience. The results suggest that presented approach reduces the semantic density of tag set, and improves the visual consistency of Tag-Cloud layout.
Towards the semantic web: Collaborative tag suggestions
Yahoo! employee describes and defines criteria and algorithms for a collaborative tag system: Since tags are created by
individual users in a free form, one important problem facing
tagging is to identify most appropriate tags, while eliminating
noise and spam. For this purpose, we define a set of general
criteria for a good tagging system. These criteria include high
coverage of multiple facets to ensure good recall, least effort to
reduce the cost involved in browsing, and high popularity to
ensure tag quality. We propose a collaborative tag suggestion
algorithm using these criteria to spot high-quality tags.
Tagging, Folksonomy & Co - Renaissance of Manual Indexing?
This paper gives an overview of current trends in manual indexing on the Web. Along with a general rise of user generated content there are more and more tagging systems that allow users to annotate digital resources with tags (keywords) and share their annotations with other users. Tagging is frequently seen in contrast to traditional knowledge organization systems or as something completely new. This paper shows that tagging should better be seen as a popular form of manual indexing on the Web. Difference between controlled and free indexing blurs with sufficient feedback mechanisms. A revised typology of tagging systems is presented that includes different user roles and knowledge organization systems with hierarchical relationships and vocabulary control. A detailed bibliography of current research in collaborative tagging is included.
Intelligent Agents: Theory and Practice
The concept of an agent has become important in both Artificial Intelligence (AI) and mainstream computer science. Our aim in this paper is to point the reader at what we perceive to be the most important theoretical and practical issues associated with the design and construction of intelligent agents.
Letizia: An agent that assists web browsing
Letizia is a user interface agent that assists a user browsing the World Wide Web. As the user operates a conventional Web browser such
as Netscape, the agent tracks user behavior and attempts to anticipate items of interest by doing concurrent, autonomous exploration of links
from the user's current position. The agent automates a browsing strategy consisting of a best-first search augmented by heuristics
inferring user interest from browsing behavior.
Self-organization - review paper
review paper about "The Science of Self-organization and Adaptivity"
http://www.nickgreen.pwp.blueyonder.co.uk/GPprog.PDF
another paper by Gordon Pask about selforganization
Surveys and Essays
many essays about economic theories
andragogy @ the informal education homepage
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For Knowles, andragogy is premised on at least four
crucial assumptions about the characteristics of adult learners that are
different from the assumptions about child learners on which traditional
pedagogy is premised. A fifth was added later.1. Self-concept: As a person matures his self concept moves from one of
being a dependent personality toward one of being a self-directed human being2. Experience: As a person matures he accumulates a growing reservoir of
experience that becomes an increasing resource for learning.3. Readiness to learn. As a person matures his readiness to learn becomes
oriented increasingly to the developmental tasks of his social roles.4. Orientation to learning. As a person matures his time perspective
changes from one of postponed application of knowledge to immediacy of
application, and accordingly his orientation toward learning shifts from one of
subject-centeredness to one of problem centredness.5. Motivation to learn: As a person matures the motivation to learn is
internal (Knowles 1984:12).
Full Text: Keen vs. Weinberger - WSJ.com
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But, why should we trust the way "monkeys" (as you refer to Web users in your book) connect the pieces? We shouldn't trust them blindly. Open up The Britannica at random and you're far more likely to find reliable knowledge than if you were to open up the Web at random. That's why we don't open up the Web at random. Instead, we rely upon a wide range of trust mechanisms, appropriate to their domain, to guide us.
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