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Full-Text Articles in Engineering
Learning Without Default: A Study Of One-Class Classification And The Low-Default Portfolio Problem, Kenneth Kennedy, Brian Mac Namee, Sarah Jane Delany
Learning Without Default: A Study Of One-Class Classification And The Low-Default Portfolio Problem, Kenneth Kennedy, Brian Mac Namee, Sarah Jane Delany
Conference papers
This paper asks at what level of class imbalance one-class classifiers outperform two-class classifiers in credit scoring problems in which class imbalance, referred to as the low-default portfolio problem, is a serious issue. The question is answered by comparing the performance of a variety of one-class and two-class classifiers on a selection of credit scoring datasets as the class imbalance is manipulated. We also include random oversampling as this is one of the most common approaches to addressing class imbalance. This study analyses the suitability and performance of recognised two-class classifiers and one-class classifiers. Based on our study we conclude …
Reusable, Interactive, Multilingual Online Avatars, Charlie Cullen, Carl Goodman, Paula Mcgloin, Anna Deegan
Reusable, Interactive, Multilingual Online Avatars, Charlie Cullen, Carl Goodman, Paula Mcgloin, Anna Deegan
Conference papers
This paper details a system for delivering reusable, interactive multilingual avatars in online children’s games. The development of these avatars is based on the concept of an intelligent media object that can be repurposed across different productions. The system is both language and character independent, allowing content to be reused in a variety of contexts and locales. In the current implementation, the user is provided with an interactive animated robot character that can be dressed with a range of body parts chosen by the user in real-time. The robot character reacts to each selection of a new part in a …
Corpvis: An Online Emotional Speech Corpora Visualisation Interface, Charlie Cullen, Brian Vaughan
Corpvis: An Online Emotional Speech Corpora Visualisation Interface, Charlie Cullen, Brian Vaughan
Conference papers
Our research in emotional speech analysis has led to the construction of several dedicated high quality, online corpora of natural emotional speech assets. The requirements for querying, retrieval and organization of assets based on both their metadata descriptors and their analysis data led to the construction of a suitable interface for data visualization and corpus management. The CorpVis interface is intended to assist collaborative work between several speech research groups working with us in this area, allowing online collaboration and distribution of assets to be performed. This paper details the current CorpVis interface into our corpora, and the work performed …