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Papers by Quang minh Nguyen

SSRN Electronic Journal, 2011

ABSTRACT

Lecture Notes in Computer Science, 2009

Mobile devices used in educational settings are usually employed within a collaborative learning ... more Mobile devices used in educational settings are usually employed within a collaborative learning activity in which learning takes place in the form of social interactions between team members while performing a shared task. We introduce MobiTOP (Mobile Tagging of Objects and People), a geospatial digital library system which allows users to contribute and share multimedia annotations via mobile devices. A key feature of MobiTOP that is well suited for collaborative learning is that annotations are hierarchical, allowing annotations to be annotated by other users to an arbitrary depth. A group of student-teachers involved in an inquiry-based learning activity in geography were instructed to identify rock types and associated landforms by collaborating with each other using the MobiTOP system. The outcome of the study and its implications are reported in this paper.

Lecture Notes in Computer Science, 2008

1 Wee Kim Wee School of Communication and Information, Nanyang Technological University {ktnq,kha... more 1 Wee Kim Wee School of Communication and Information, Nanyang Technological University {ktnq,khasfariyati,ashlgoh,qmnguyen,tyltheng}@ntu.edu.sg 2 School of Information Systems, Singapore Management University eplim@smu.edu.sg 3 School of Computer Engineering, Nanyang Technological University axsun@ntu.edu.sg 4 National Institute of Education, Nanyang Technological University {chewhung.chang,kalyani.c}@nie.edu.sg ... Abstract. We introduce MobiTOP, a map-based interface for accessing hierarchically organized georeferenced annotations. ...

Research and Advanced Technology for Digital Libraries, 2008

TagNSearch is a map-based tool for searching and browsing geotagged photographs based on their as... more TagNSearch is a map-based tool for searching and browsing geotagged photographs based on their associated tags. Using Flickr as the dataset, TagNSearch returns, for a given query, photographs clustered by locations, and summarizes each cluster of photographs by cluster-specific tags. A map-based interface is also provided to help users better search, navigate and browse photographs and their clusters. A qualitative evaluation comparing TagNSearch and an existing tag search support in Flickr was also conducted. The task involved finding locations associated with a set of photographs. Participants were found to perform this task better using TagNSearch than Flickr.

2009 Sixth International Conference on Information Technology: New Generations, 2009

We introduce MobiTOP, a map-based interface for accessing hierarchically organized georeferenced ... more We introduce MobiTOP, a map-based interface for accessing hierarchically organized georeferenced annotations. Each annotation contains multimedia content associated with a location, and users are able to annotate existing annotations, in effect creating a hierarchy. MobiTOP's interface was designed using a participatory design methodology to ensure that the user interface meets the needs of potential users. A pilot study to compare the MobiTOP interface with a space-filling thumbnail (SFT) interface suggested that participants preferred the MobiTOP design for accessing annotations even though the SFT interface was conceptually easier to understand resources.

2009 Tenth International Conference on Mobile Data Management: Systems, Services and Middleware, 2009

Abstract We introduce MobiTOP (mobile tagging of objects and people), a map-based application whi... more Abstract We introduce MobiTOP (mobile tagging of objects and people), a map-based application which allows users to contribute and share geo-referenced multimedia annotations via mobile devices. An important feature of MobiTOP is that annotations are hierarchical, allowing annotations to be annotated to an arbitrary depth. MobiTOPpsilas interface was designed using a participatory design methodology to ensure that the user interface meets the needs of potential users. In an evaluation, a group of student-teachers ...

International Research in Geographical and Environmental Education, 2012

Geographical inquiry involves collecting, using and making sense of the data to investigate some ... more Geographical inquiry involves collecting, using and making sense of the data to investigate some geographical phenomena. With the increasing number of mobile devices equipped with Internet access capabilities, there is a wide scope for using it in field inquiry where learning can take place in the form of social interactions between team members while performing a common task. The authors examine the use of MobiTOP (Mobile Tagging of Objects and People), a geospatial digital library system which allows users to contribute and share multimedia annotations via mobile devices, within a geographical field inquiry. A key feature of MobiTOP that is well suited for collaborative learning is that annotations are hierarchical, allowing annotations to be annotated by other users to an arbitrary depth. A group of student and teachers involved in an inquiry-based learning activity in geography was instructed to identify rock types and associated landforms by collaborating with each other using the MobiTOP system. A method combining several data collection methods was used. Four main findings on the affordances of the mobile phone, the need for specialized training in using the application with the mobile phone, design considerations of the application and the authentic context of learning with fieldwork are reported. A discussion on the implication of these findings and how mobile technology may be used for geographical field learning are also included in this paper.

Lecture Notes in Business Information Processing, 2016

News on the Internet today plays an important role in helping people access daily information aro... more News on the Internet today plays an important role in helping people access daily information around the world. News aggregators are websites that collect and provide content from different sources in one location for easy viewing. However, the increasing number of news on the Internet makes it difficult for readers when they desire to access news they are concerned. One solution to this issue is based on employing recommender systems. In this research, we propose a novel method for news recommendation based on a combination of semantic similarity with content similarity between news and implement it as a feature of semantic-based news aggregators BKSport. Experimental results have shown that, a combination of both kind of similarity measures will result in better recommendation than when using either measure separately.