Marc Spaniol

Learning As a Service: A Web-Based Learning Framework for Communities of Professionals on the Web 2.0

No wonder you activities are, reading will be always needed. It is not only to fulfil the duties that you need to finish in deadline time. Reading will encourage your mind and thoughts. Of course, reading will greatly develop your experiences about everything. Reading advances in web based learning icwl 2007 6th international conference edinburgh uk august 15 17 2007 revised papers lecture notes in computer science is also a way as one of the collective books that gives many advantages. The advantages are not only for you, but for the other peoples with those meaningful benefits.

Timely YAGO: harvesting, querying, and visualizing temporal knowledge from Wikipedia

Recent progress in information extraction has shown how to automatically build large ontologies from high-quality sources like Wikipedia. But knowledge evolves over time; facts have associated validity intervals. Therefore, ontologies should include time as a first-class dimension. In this paper, we introduce Timely YAGO, which extends our previously built knowledge base YAGO with temporal aspects. This prototype system extracts temporal facts from Wikipedia infoboxes, categories, and lists in articles, and integrates these into the Timely YAGO knowledge base. We also support querying temporal facts, by temporal predicates in a SPARQL-style language. Visualization of query results is provided in order to better understand of the dynamic nature of knowledge.

Harvesting facts from textual web sources by constrained label propagation

There have been major advances on automatically constructing large knowledge bases by extracting relational facts from Web and text sources. However, the world is dynamic: periodic events like sports competitions need to be interpreted with their respective timepoints, and facts such as coaching a sports team, holding political or business positions, and even marriages do not hold forever and should be augmented by their respective timespans. This paper addresses the problem of automatically harvesting temporal facts with such extended time-awareness. We employ pattern-based gathering techniques for fact candidates and construct a weighted pattern-candidate graph. Our key contribution is a system called PRAVDA based on a new kind of label propagation algorithm with a judiciously designed loss function, which iteratively processes the graph to label good temporal facts for a given set of target relations. Our experiments with online news and Wikipedia articles demonstrate the accuracy of this method.

Advances in Web Based Learning - ICWL 2010 : 9th International Conference

New updated! The advances in web based learning icwl 2010 9th international conference shanghai china december 8 1

Web-based learning with non-linear multimedia stories

Stories and story-telling are a cultural achievement of significant relevance, even in modern times. Since ancient times stories have served to entertain and teach mankind to “transmit” knowledge from generation to generation. Story-telling ranges from simple aural narrations to traditional inter-generational discourse and, in modern times, workflow-oriented organizational learning. Web-based systems are by nature well-suited to support learning from digital stories in communities of practice. Despite the potential of story-telling to foster knowledge sharing in communities its full power to stimulate community-based learning processes in yet only marginally exploited. Although there are many story-telling approaches, most of them are not suitable for non-linear story creation and consumption. In addition, most of these are not based on a well defined methodology that underpins the story development process. In this paper we present the implementation of a non-linear multimedia story-telling environment based on the movement oriented design (MOD) paradigm. Finally, using a media-theoretic approach, we utilize structural aspects of story telling and identify patterns related to successful non-linear multimedia stories.

Advances in Web Based Learning - ICWL 2009

This book constitutes the refereed proceedings of the 8th International Conference on Web-Based Learning, ICWL 2009, held in Aachen, Germany, in August 2009. The 38 revised full papers and 14 short papers are presented together with three invited papers and were carefully reviewed and selected from 106 submissions. They deal with topics such as technology enhanced learning, web-based learning for oriental languages, mobile learning, social software and Web 2.0 for technology enhanced learning, learning resource deployment, organization and management, design, model and framework of E-learning systems, e-learning metadata and standards, educational gaming and multimedia storytelling for learning, as well as practice and experience sharing and pedagogical Issues

Pattern-Based cross media social network analysis for technology enhanced learning in europe

It is extremely challenging to get an overview of the state-of-the-art in technology enhanced learning in Europe. Rapid technological and pedagogical innovations, constantly changing markets, a vivid number of small and medium enterprises, complex policy processes, ongoing political and societal debates on the pros and cons of technology enhanced leaning, combined with many languages and different cultures, make it almost impossible for people to be informed. We want to introduce the media base and the measure tools for pattern-based cross media social network analysis, created by the PROLEARN network of excellence in professional learning. The main goal of this endeavour is the reduction of complexity for actors in digital social networks by applying ideas from social software and already successful methods for complexity reduction, such as information visualization, social network analysis and pattern languages.

SHARC: framework for quality-conscious web archiving

Web archives preserve the history of born-digital content and offer great potential for sociologists, business analysts, and legal experts on intellectual property and compliance issues. Data quality is crucial for these purposes. Ideally, crawlers should gather sharp captures of entire Web sites, but the politeness etiquette and completeness requirement mandate very slow, long-duration crawling while Web sites undergo changes. This paper presents the SHARC framework for assessing the data quality in Web archives and for tuning capturing strategies towards better quality with given resources. We define quality measures, characterize their properties, and derive a suite of quality-conscious scheduling strategies for archive crawling. It is assumed that change rates of Web pages can be statistically predicted based on page types, directory depths, and URL names. We develop a stochastically optimal crawl algorithm for the offline case where all change rates are known. We generalize the approach into an online algorithm that detect information on a Web site while it is crawled. For dating a site capture and for assessing its quality, we propose several strategies that revisit pages after their initial downloads in a judiciously chosen order. All strategies are fully implemented in a testbed, and shown to be effective by experiments with both synthetically generated sites and a daily crawl series for a medium-sized site.

MobSOS - A Testbed for Mobile Multimedia Community Services

Due to recent developments in the domain of mobile broadband communication and a growing availability of standardized development tools for mobile devices a new generation of mobile services and applications is expected to emerge in the near future combining well-established multimedia and community concepts with mobile aspects. However, it is often challenging to predict the success of such new services. In this paper we present a short overview of the MobSOS testbed and its homonymous success model based on a combination of traditional information system success models with modern requirements for mobile multimedia communities. Finally we outline the application of the MobSOS testbed to NMV Mobile, a mobile multimedia capturing, annotation and retrieval tool.

A Hypermedia Afghan Sites and Monuments Database

Cultural heritage management is an excellent application domain for geographical hypermedia information systems. Many people with different tasks and levels of profession like fieldworkers, researchers, project and campaign officers, cultural bureaucrats etc. collaboratively producing and consuming different media like photographs, video, drawings, books, etc. must deal with exact geographic information about moveable or unmovable objects of interest. Implemented information systems must obey all standards in the different domains to overcome classical failures of isolated solutions which do not scale beyond the scope of a single project. We present a conceptual approach which integrates geographic information, multimedia information, cultural heritage information and collaborative aspects in a single information model. This conceptual approach was used to design and implement a web-based information system on top of a single commercial database covering all mentioned aspects. This information system was deployed for a project in the conservation of cultural heritage in Afghanistan to prove the validity of the concepts.