Paul Janecek - Profile on Academia.edu (original) (raw)
Papers by Paul Janecek
A survey of e-banking performance in Thailand
International Journal of Electronic Finance, Mar 20, 2015
... All three banks reported rapid growth of registered internet bankers (25k per year for KBANK,... more ... All three banks reported rapid growth of registered internet bankers (25k per year for KBANK, 120k per year ... A survey of e-banking performance in Thailand ... The relatively low perception of information that fit one's needs seems consistent with the fairly low perceived usefulness ...
1. Report Title and Type (Thesis/Research Study/Special Study/etc) BARGAIN HUNTINT USING AN INTERACTIVE SPATIAL VIEW
A Tool for Editing and Simulating Coloured Petri Nets
... Download: http://www.daimi.au.dk/\~mads/docs/etaps2001.pdf CACHED: Download as a PDF. by Miche... more ... Download: http://www.daimi.au.dk/~mads/docs/etaps2001.pdf CACHED: Download as a PDF. by Michel Beaudouin-lafon , Wendy E. Mackay , Mads Jensen , Peter Andersen , Paul Janecek , Michael Lassen , Kasper Lund , Kjeld Mortensen , Stephanie Munck , Anne Ratzer ...
The implementation of faceted classification in web site searching and browsing
Online Information Review, Apr 17, 2007
Abstract Purpose The aim of this paper is to develop and implement a multidimensional classific... more Abstract Purpose The aim of this paper is to develop and implement a multidimensional classification system in the web that can provide an alternative but convenient structure for organising and finding information content. Design/methodology/approach A prototype system is ...
The effect of work context on the use of three interaction techniques
By capitalizing on human's powerful visual processing capabilities, visual interfaces play an inc... more By capitalizing on human's powerful visual processing capabilities, visual interfaces play an increasingly important role in how we access, analyze, and understand information. At the same time, as information becomes more semantically annotated, interfaces that can explicate semantic relationships of data enable us to verify the encoded information. In this paper we present semantic fisheye views (SFEV) and discuss its properties in integrating semantic relationships into information browsing, and seeking tasks. We describe the formalisms and visual mapping functions of SFEVs, and then present two applications: one for visualizing the structure and relational properties of information in constrained displays, and another for learning and exploring semantic information in image databases.
Visual interfaces play an increasingly important role in how we access, analyze, and understand i... more Visual interfaces play an increasingly important role in how we access, analyze, and understand information. However, most such interfaces do not support opportunistic information seeking, a type of behavior characterized by uncertainty in user's initial information needs and subsequent modification of search queries to improve on results. In this paper, we present a visual interface implemented using semantic fisheye views (SFEV) and discuss how we use a word ontology to expand search context, thus allowing users more opportunities to refine initial queries. After presenting the formalism of SFEV, we describe an application of this framework in image retrieval.
This paper describes several design enhancements we have added to pie menus: (1) transparency and... more This paper describes several design enhancements we have added to pie menus: (1) transparency and repositioning to allow a user to more easily see the model they are working on, (2) display of "contextual information" in the menu to show the current state of the object, (3) "lock- mode" to apply multiple commands to the same object without closing the
Development of a Personal Learning Environment (PLE) to support a Distance Teacher Education Programme (DTEP) for Samtse College Of Education, Bhutan
Bargain Hunting Using an Interactive Spatial View
OPENGL-based Solar System Simulation: Formation of the Planets and their Orbits
Currently, computer has more influence in human’s life, because it makes things easier and better... more Currently, computer has more influence in human’s life, because it makes things easier and better. In organization, they use a computer for presetting their project, while Astronomers use it for explaining their theory. However, application that they used, it is not the same. They usually choose the application that supports their job the most. There is one application that is
Lecture Notes in Computer Science, 2003
Effective opportunistic search in visual interfaces for large information collections, such as do... more Effective opportunistic search in visual interfaces for large information collections, such as documents, web pages, and annotated images, often requires domain knowledge that the information seeker does not have. Relevant semantic information, such as metadata and especially ontologies, are valuable resources for helping the user learn this domain knowledge. In this paper we describe an interactive "focus + context" visualization technique for integrating this semantic information into the representation of the information collection to support effective opportunistic search. We have implemented a prototype using these techniques that integrates WordNet, a general lexical ontology, and a large collection of professionally annotated images. As the user explores the collection, the prototype dynamically changes the visual emphasis and detail of the images and keywords to reflect the relevant semantic relationships. This interaction allows the user to rapidly learn and use the domain knowledge required for effective opportunistic search.
Lecture Notes in Computer Science, 2004
Figure 1: Reducing visual complexity with semantic fisheye view techniques.
Lecture Notes in Computer Science, 2005
Exploratory search over a collection often requires users to iteratively apply a variety of strat... more Exploratory search over a collection often requires users to iteratively apply a variety of strategies, such as searching for more general or more specific concepts in reaction to the information they encounter. Rich semantic models, such as WordNet, are potentially valuable aids for users to make sense of this information. However, these large complex models often contain specialized vocabularies and a detailed level of granularity that makes them difficult to use as an aid for opportunistic search. In this paper, we describe how Semantic Fisheye Views (SFEV) can be designed to transparently integrate rich semantic models into the search process, allowing users to effectively explore a diverse range of related concepts without explicitly navigating over the underlying model. The SFEV combines semantic guided search with interactive visualization techniques, creating a search tool that we have found to be significantly more effective than keyword similarity alone for exploratory tasks.
Proceedings of the Working Conference on Advanced Visual Interfaces - AVI '02, 2002
In this paper we discuss the design and use of fisheye view techniques to explore semantic relati... more In this paper we discuss the design and use of fisheye view techniques to explore semantic relationships in information. Traditional fisheye and "focus + context" techniques dynamically modify the visual rendering of data in response to the changing interest of the user. "Interesting" information is shown in more detail or visually emphasized, while less relevant information is shown in less detail, de-emphasized, or filtered. These techniques are effective for navigating through large sets of information in a constrained display, and for discovering hidden relationships in a particular representation. An open area of research with these techniques, however, is how to redefine interest as a user's tasks and information needs change. We are developing a framework for implementing fisheye views to support multiple semantic contexts. The framework i s based on two components: Degree Of Interest functions, and visual emphasis algorithms to change the representation of information with respect to interest. The framework supports different contexts through the aggregation of multiple weighted distance metrics in the calculation of interest. Using this framework, we have developed a user-configurable interface for browsing tabular data that visually emphasizes objects with respect to different semantic contexts.
Comparison of Enterprise Resource Planning (ERP) applications for The Royal Project (Thailand)
A survey of e-banking performance in Thailand
International Journal of Electronic Finance, 2009
... All three banks reported rapid growth of registered internet bankers (25k per year for KBANK,... more ... All three banks reported rapid growth of registered internet bankers (25k per year for KBANK, 120k per year ... A survey of e-banking performance in Thailand ... The relatively low perception of information that fit one's needs seems consistent with the fairly low perceived usefulness ...
Applying Visualization Research Towards Design
Lecture Notes in Computer Science, 1999
ABSTRACT
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 2010
A Service-Level Agreement (SLA) provides surety for specific quality attributes to the consumers ... more A Service-Level Agreement (SLA) provides surety for specific quality attributes to the consumers of services. However, the current SLAs offered by cloud providers do not address response time, which, from the user's point of view, is the most important quality attribute for Web applications. Satisfying a maximum average response time guarantee for Web applications is difficult for two main reasons: first, traffic patterns are unpredictable; second, the complex nature of multi-tier Web applications increases the difficulty of identifying bottlenecks and resolving them automatically. This paper presents a working prototype system that automatically detects and resolves bottlenecks in a multi-tier Web application hosted on a EUCALYPTUS-based cloud in order to satisfy specific maximum response time requirements. We demonstrate the feasibility of the approach in an experimental evaluation with a testbed cloud and a synthetic workload. Automatic bottleneck detection and resolution under dynamic resource management has the potential to enable cloud providers to provide SLAs for Web applications that guarantee specific response time requirements.
2007 37th annual frontiers in education conference - global engineering: knowledge without borders, opportunities without passports, 2007
This paper compares the accuracy of Decision Tree and Bayesian Network algorithms for predicting ... more This paper compares the accuracy of Decision Tree and Bayesian Network algorithms for predicting the academic performance of undergraduate and postgraduate students at two very different academic institutes: Can Tho University (CTU), a large national university in Viet Nam; and the Asian Institute of Technology (AIT), a small international postgraduate institute in Thailand that draws students from 86 different countries. Although the diversity of these two student populations is very different, the data-mining tools were able to achieve similar levels of accuracy for predicting student performance: 73/71% for {fail, fair, good, very good} and 94/93% for {fail, pass} at the CTU/AIT respectively. These predictions are most useful for identifying and assisting failing students at CTU (64% accurate), and for selecting Very Good students for scholarships at the AIT (82% accurate). In this analysis, the Decision Tree was consistently 3-12% more accurate than the Bayesian Network. The results of these case studies give insight into techniques for accurately predicting student performance, compare the accuracy of data mining algorithms, and demonstrate the maturity of open source tools.
A survey of e-banking performance in Thailand
International Journal of Electronic Finance, Mar 20, 2015
... All three banks reported rapid growth of registered internet bankers (25k per year for KBANK,... more ... All three banks reported rapid growth of registered internet bankers (25k per year for KBANK, 120k per year ... A survey of e-banking performance in Thailand ... The relatively low perception of information that fit one's needs seems consistent with the fairly low perceived usefulness ...
1. Report Title and Type (Thesis/Research Study/Special Study/etc) BARGAIN HUNTINT USING AN INTERACTIVE SPATIAL VIEW
A Tool for Editing and Simulating Coloured Petri Nets
... Download: http://www.daimi.au.dk/\~mads/docs/etaps2001.pdf CACHED: Download as a PDF. by Miche... more ... Download: http://www.daimi.au.dk/~mads/docs/etaps2001.pdf CACHED: Download as a PDF. by Michel Beaudouin-lafon , Wendy E. Mackay , Mads Jensen , Peter Andersen , Paul Janecek , Michael Lassen , Kasper Lund , Kjeld Mortensen , Stephanie Munck , Anne Ratzer ...
The implementation of faceted classification in web site searching and browsing
Online Information Review, Apr 17, 2007
Abstract Purpose The aim of this paper is to develop and implement a multidimensional classific... more Abstract Purpose The aim of this paper is to develop and implement a multidimensional classification system in the web that can provide an alternative but convenient structure for organising and finding information content. Design/methodology/approach A prototype system is ...
The effect of work context on the use of three interaction techniques
By capitalizing on human's powerful visual processing capabilities, visual interfaces play an inc... more By capitalizing on human's powerful visual processing capabilities, visual interfaces play an increasingly important role in how we access, analyze, and understand information. At the same time, as information becomes more semantically annotated, interfaces that can explicate semantic relationships of data enable us to verify the encoded information. In this paper we present semantic fisheye views (SFEV) and discuss its properties in integrating semantic relationships into information browsing, and seeking tasks. We describe the formalisms and visual mapping functions of SFEVs, and then present two applications: one for visualizing the structure and relational properties of information in constrained displays, and another for learning and exploring semantic information in image databases.
Visual interfaces play an increasingly important role in how we access, analyze, and understand i... more Visual interfaces play an increasingly important role in how we access, analyze, and understand information. However, most such interfaces do not support opportunistic information seeking, a type of behavior characterized by uncertainty in user's initial information needs and subsequent modification of search queries to improve on results. In this paper, we present a visual interface implemented using semantic fisheye views (SFEV) and discuss how we use a word ontology to expand search context, thus allowing users more opportunities to refine initial queries. After presenting the formalism of SFEV, we describe an application of this framework in image retrieval.
This paper describes several design enhancements we have added to pie menus: (1) transparency and... more This paper describes several design enhancements we have added to pie menus: (1) transparency and repositioning to allow a user to more easily see the model they are working on, (2) display of "contextual information" in the menu to show the current state of the object, (3) "lock- mode" to apply multiple commands to the same object without closing the
Development of a Personal Learning Environment (PLE) to support a Distance Teacher Education Programme (DTEP) for Samtse College Of Education, Bhutan
Bargain Hunting Using an Interactive Spatial View
OPENGL-based Solar System Simulation: Formation of the Planets and their Orbits
Currently, computer has more influence in human’s life, because it makes things easier and better... more Currently, computer has more influence in human’s life, because it makes things easier and better. In organization, they use a computer for presetting their project, while Astronomers use it for explaining their theory. However, application that they used, it is not the same. They usually choose the application that supports their job the most. There is one application that is
Lecture Notes in Computer Science, 2003
Effective opportunistic search in visual interfaces for large information collections, such as do... more Effective opportunistic search in visual interfaces for large information collections, such as documents, web pages, and annotated images, often requires domain knowledge that the information seeker does not have. Relevant semantic information, such as metadata and especially ontologies, are valuable resources for helping the user learn this domain knowledge. In this paper we describe an interactive "focus + context" visualization technique for integrating this semantic information into the representation of the information collection to support effective opportunistic search. We have implemented a prototype using these techniques that integrates WordNet, a general lexical ontology, and a large collection of professionally annotated images. As the user explores the collection, the prototype dynamically changes the visual emphasis and detail of the images and keywords to reflect the relevant semantic relationships. This interaction allows the user to rapidly learn and use the domain knowledge required for effective opportunistic search.
Lecture Notes in Computer Science, 2004
Figure 1: Reducing visual complexity with semantic fisheye view techniques.
Lecture Notes in Computer Science, 2005
Exploratory search over a collection often requires users to iteratively apply a variety of strat... more Exploratory search over a collection often requires users to iteratively apply a variety of strategies, such as searching for more general or more specific concepts in reaction to the information they encounter. Rich semantic models, such as WordNet, are potentially valuable aids for users to make sense of this information. However, these large complex models often contain specialized vocabularies and a detailed level of granularity that makes them difficult to use as an aid for opportunistic search. In this paper, we describe how Semantic Fisheye Views (SFEV) can be designed to transparently integrate rich semantic models into the search process, allowing users to effectively explore a diverse range of related concepts without explicitly navigating over the underlying model. The SFEV combines semantic guided search with interactive visualization techniques, creating a search tool that we have found to be significantly more effective than keyword similarity alone for exploratory tasks.
Proceedings of the Working Conference on Advanced Visual Interfaces - AVI '02, 2002
In this paper we discuss the design and use of fisheye view techniques to explore semantic relati... more In this paper we discuss the design and use of fisheye view techniques to explore semantic relationships in information. Traditional fisheye and "focus + context" techniques dynamically modify the visual rendering of data in response to the changing interest of the user. "Interesting" information is shown in more detail or visually emphasized, while less relevant information is shown in less detail, de-emphasized, or filtered. These techniques are effective for navigating through large sets of information in a constrained display, and for discovering hidden relationships in a particular representation. An open area of research with these techniques, however, is how to redefine interest as a user's tasks and information needs change. We are developing a framework for implementing fisheye views to support multiple semantic contexts. The framework i s based on two components: Degree Of Interest functions, and visual emphasis algorithms to change the representation of information with respect to interest. The framework supports different contexts through the aggregation of multiple weighted distance metrics in the calculation of interest. Using this framework, we have developed a user-configurable interface for browsing tabular data that visually emphasizes objects with respect to different semantic contexts.
Comparison of Enterprise Resource Planning (ERP) applications for The Royal Project (Thailand)
A survey of e-banking performance in Thailand
International Journal of Electronic Finance, 2009
... All three banks reported rapid growth of registered internet bankers (25k per year for KBANK,... more ... All three banks reported rapid growth of registered internet bankers (25k per year for KBANK, 120k per year ... A survey of e-banking performance in Thailand ... The relatively low perception of information that fit one's needs seems consistent with the fairly low perceived usefulness ...
Applying Visualization Research Towards Design
Lecture Notes in Computer Science, 1999
ABSTRACT
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 2010
A Service-Level Agreement (SLA) provides surety for specific quality attributes to the consumers ... more A Service-Level Agreement (SLA) provides surety for specific quality attributes to the consumers of services. However, the current SLAs offered by cloud providers do not address response time, which, from the user's point of view, is the most important quality attribute for Web applications. Satisfying a maximum average response time guarantee for Web applications is difficult for two main reasons: first, traffic patterns are unpredictable; second, the complex nature of multi-tier Web applications increases the difficulty of identifying bottlenecks and resolving them automatically. This paper presents a working prototype system that automatically detects and resolves bottlenecks in a multi-tier Web application hosted on a EUCALYPTUS-based cloud in order to satisfy specific maximum response time requirements. We demonstrate the feasibility of the approach in an experimental evaluation with a testbed cloud and a synthetic workload. Automatic bottleneck detection and resolution under dynamic resource management has the potential to enable cloud providers to provide SLAs for Web applications that guarantee specific response time requirements.
2007 37th annual frontiers in education conference - global engineering: knowledge without borders, opportunities without passports, 2007
This paper compares the accuracy of Decision Tree and Bayesian Network algorithms for predicting ... more This paper compares the accuracy of Decision Tree and Bayesian Network algorithms for predicting the academic performance of undergraduate and postgraduate students at two very different academic institutes: Can Tho University (CTU), a large national university in Viet Nam; and the Asian Institute of Technology (AIT), a small international postgraduate institute in Thailand that draws students from 86 different countries. Although the diversity of these two student populations is very different, the data-mining tools were able to achieve similar levels of accuracy for predicting student performance: 73/71% for {fail, fair, good, very good} and 94/93% for {fail, pass} at the CTU/AIT respectively. These predictions are most useful for identifying and assisting failing students at CTU (64% accurate), and for selecting Very Good students for scholarships at the AIT (82% accurate). In this analysis, the Decision Tree was consistently 3-12% more accurate than the Bayesian Network. The results of these case studies give insight into techniques for accurately predicting student performance, compare the accuracy of data mining algorithms, and demonstrate the maturity of open source tools.