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This paper presents a Java-based hyperbolic-style browser designed to render RDF files as structured ontological maps. The program was motivated by the need to browse the content of a web-accessible ontology server: WEBKB-2. The ontology server contains descriptions of over 74,500 object types derived from the WORDNET 1.7 lexical database and can be(More)
This paper introduces ImageSleuth, a tool for browsing and searching annotated collections of images. It combines the methods of Formal Concept Analysis (FCA) for information retrieval with the graph-ical information conveyed in thumbnails. In order to use thumbnails of images to represent concept extents, line diagrams can not be efficiently utilised and(More)
This paper surveys public domain supervised machine learning algorithms and performs accuracy (error rate) analysis of their classiication performance on unseen instances for twenty-nine of the University California Irvine machine learning datasets. The learning algorithms represent three types of classiier: decision trees, neural networks and rule-based(More)
SearchSleuth is a program developed to experiment with the automated local analysis of Web search using formal concept analysis. SearchSleuth extends a standard search interface to include a conceptual neighborhood centered on a formal concept derived from the initial query. This neighborhood of the concept derived from the search terms is decorated with(More)
—The Virtual Museum of the Pacific is a digital ecosystem implemented as Web 2.0 application that experiments with information and knowledge acquisition for a digital collection of museum artifacts from the Australian Museum. The Virtual Museum of the Pacific allows several search methods: attribute search based on a control vocabulary, query refinement and(More)
We discuss an approach to change detection in digital remotely sensed imagery that relies on the Fuzzy Post Classification Comparison technique. We use the fuzzy ¡-means classifier together with the Mahalanobis distance as the basis for a metric of class membership for a individual pixel. We note that the value of the fuzzy exponent ¢ in a fuzzy classifier(More)
L ARGE-SCALE WEB SEARCH engines effectively retrieve entire documents, but they are imprecise, because they do not exploit and hence retrieve the semantic Web document content. We cannot automatically extract such content from general documents yet. Manually structuring Web documents— for example, with XML—lets us retrieve more precise information using(More)
Formal Concept Analysis (FCA) has typically been applied in the field of software engineering to support software maintenance and object-oriented class identification tasks. This paper presents a broader overview by describing and classifying academic papers that report the application of FCA to software engineering. The papers are classified using a(More)