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Ajith P. Madurapperuma

dblp:15/3458 · DBLP profile ↗
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6ranked-venue papers
1as first author
0since 2021 · last 2007
—ORCID · none

Domains — the database's venue-derived domains; a paper can count in several

Human-computer interaction and ubiquitous computing · 4Applied, interdisciplinary, general and emerging computing · 3Databases, data management, data science and information retrieval · 2 · 1 first-authorGraphics, computer vision, multimedia, augmented reality and games · 1

Expertise — from the expertise taxonomy: the topics of the expert's papers under the CCF categories. A weight counts papers with recency: 1 for a paper about the topic, 0.3 when the topic is its context, halved every five years.

Databases, data mining, and information retrieval
1 paper
Database system architecture and tuning · 50% Data integration and cleaning · 50%

Topics — the 2 heaviest of 2, each with the papers that count most for it

TopicWeightPapersLastEvidence papers
Database system architecture and tuning › database administration
database migration
0.011997
Tools to Enable Interoperation of Heterogeneous Databases · ICDE 1997
Data integration and cleaning
schema translation
0.011997
Tools to Enable Interoperation of Heterogeneous Databases · ICDE 1997
YearPublicationVenuePosition
2007 Media Me: Body and Personal Media Interaction
Owen Noel Newton Fernando, Imiyage Janaka Prasad Wijesena, Adrian David Cheok, Ajith P. Madurapperuma, Lochandaka Ranathunga, Mei Gangwen, Miyuru Dayarathna, Srinivasan Mariappan, Lee Rui Jie Jerome
ICEC4
2006 Cross-Language Similarity between Perceptual and Semantic Structures of Color Tones
abstract
The paper describes a study of how Japanese and Sinhala naive viewers use modifiers to describe differences in color tones. Three sequences of color tone stimuli were created for three hues, red, green and blue by varying just two parameters, saturation and value. Two methods were employed to study how naive viewers use modifiers to describe differences in their perceptions and modifiers of color tones. A preliminary elicitation employed the methods of selection description, in which Japanese and Sinhala modifiers meaning - pale, bright, vivid, strong, dull, dark - constituted a high proportion of responses. These modifiers were employed in a triadic comparison. Dissimilarities of all pair wise comparisons of stimuli were submitted to MDS analysis in order to derive a multidimensional perceptual structure for the stimuli. A semantic differential structure was derived applying PCA for modifier responses provided for the same set of stimuli. The results revealed that Japanese and Sinhala native speakers perceptually discriminate the six color tone stimulus into six categories. Furthermore, the semantic structures for each hue were different from one a another. And it was observed that the semantic structures related differently to the dimensions of the perceptual structures.
Charith N. W. Giragama, Chandrajith Ashuboda Marasinghe, Ajith P. Madurapperuma, Dishna R. Wanasinghe, Susantha Herath, Minetada Osano
SMC3
2006 Modeling Cognitive Structure of Emotion for Developing a Pedagogical Agent Based Interactive Game
abstract
The paradigm of animated pedagogical agent has been developed in recent years. These lifelike autonomous characters inhabit leaning environments and make rich, face-to-face learning interactions possible. Children seem to develop an immediate and deep affinity to such characters: the agents abilities open up new possibilities, e.g. agents can demonstrate complex tasks, employ locomotion and gestures, focus children's attention on the most important aspects of a task at hand, and convey emotional responses to the game. This create a comfortable environment with the ability to both engage and motivate children. The pedagogical agent uses emotion, intensity of emotion, and game states in order to create rules for adapting the system according to child behavior. Results showed that an affective gesture recognition model was able to recognize a child's emotion with a considerably high rate of over 82.5%, and the social agent (estimate intensity of emotion) had a strong relationship with observers' feedback, except in low intensity levels.
P. Ravindra De Silva, Chandrajith Ashuboda Marasinghe, Ajith P. Madurapperuma, Stephen G. Lambacher, Minetada Osano
SMC3
2006 Boundary Color Tones between Color Modifiers in Two Languages
abstract
This paper suggests a further improvement to ISCC-NBS naming system for determining exact boundary color tone between color modifiers that associated each region on the Munsell color space. Three sequences of color tone stimuli were created for three fundamental hues red, green and blue by varying just two parameters, saturation and value. Two experiments were executed to investigate the consensual use of modifiers in describing perceptual variations of color tones by Japanese and Sinhala (Language of Sri Lanka) naive viewers. One was a triadic comparison method in which the color modifiers meaning - pale, bright, vivid, strong, dull, and dark - were employed. Results revealed that these modifiers were used in a consistent manner for all three hues. Second was a two-alternative forced-choice experiments that was executed to determined the boundary color tone at which modifier labels switch from bright to strong, and from vivid to dull.
Dishna R. Wanasinghe, Chandrajith Ashuboda Marasinghe, Ajith P. Madurapperuma, Charith N. W. Giragama, Susantha Herath, Minetada Osano
SMC3
1997 Tools to Enable Interoperation of Heterogeneous Databases
abstract
The authors demonstrate a prototype toolkit called ITSE (Integrated Translation Support Environment), for interoperation and migration of heterogeneous database systems.
Wernher Behrendt, Nick J. Fiddian, Ajith P. Madurapperuma
ICDE3
1997 A Visual Query Interface for a Customisable Schema Visualisation System
abstract
Resolving different levels of heterogeneity present in heterogeneous database environments is a subject that has been addressed in a number of research projects. Graphical user interfaces are becoming the de-facto form of user interface in many application areas, including database management systems. The use of a popular visualisation notation to present schemas at an abstract level and to permit direct user manipulation of this visualisation in formulating queries is one of the most widespread approaches to providing database graphical user interfaces. The existence of a variety of visualisation notations (which are in common use to visualise schemas) introduces additional heterogeneity to a distributed system, in visual representation at the end-user interface level. This paper describes the use of meta-programming techniques which are applied to resolve this visual model heterogeneity on existing databases, by allowing a user to select a preferred visualisation notation, both to view the schema and to query the database.
Ajith P. Madurapperuma, W. Alex Gray, Nick J. Fiddian
IDEAS1