Both ontology content and ontology building tools evaluations play an important role before using ontologies in Semantic Web applications. In this paper we try to assess ontology evaluation functionalities of the following ontology platforms: OilEd, OntoEdit, Protégé-2000, and WebODE. The goal of this paper is to analyze whether such ontology platforms prevent the ontologist from making knowled...

Indexing and retrieval in Web catalogs can benefit from using faceted taxonomies. A faceted taxonomy consists of a set of facets, where each facet consists of a predefined set of terms structured by a subsumption relation. We propose two extensions of faceted taxonomies, which allow inferring conjunctions of terms that are valid in the underlying domain. We give a model-theoretic interpretation...

Categories are often organized into hierarchical taxonomies, that is, tree structures where each node represents a labeled category, and a node’s parent and children are, respectively, the category’s supertype and subtypes. A natural question is whether it is possible to reconstruct category taxonomies in cases where we are not given explicit information about how categories are related to each...

This paper proposes a framework to automatically construct taxonomies from a corpus of text documents. This framework first extracts terms from documents using a part-of-speech parser. These terms are then filtered using domain pertinence, domain consensus, lexical cohesion, and structural relevance. The remaining terms represent concepts in the taxonomy. These concepts are arranged in a hierar...

Taxonomic case-based reasoning is a conversational casebased reasoning methodology that employs feature subsumption taxonomies for incremental case retrieval. Although this approach has several benefits over standard retrieval approaches, methods for automatically acquiring these taxonomies from text documents do not exist, which limits its widespread implementation. To accelerate and simplify ...

The visualisation of taxonomic hierarchies has evolved from indented lists of names to techniques that can display thousands of nodes and onto hundreds of thousands of nodes over multiple taxonomies. However, challenges remain within multiple hierarchy visualisation, and for taxonomic hierarchy visualisation in particular. Firstly, at present, there is no support for handling specific taxonomic...

Abstract If linguistic nationalism presupposes a homogenous national language, then “dialect” taxonomies become interesting objects of study. This article examines three instances published in Zagreb. The texts, 1836, 1919, and 1995, come from (1) Ljudevit Gaj Jan Kollár, (2) Dragutin Prohaska, (3) Miro Kačić. different texts propound quite “dialects” within the imagined language. Changing stra...

ion, taxonomies, connectivity : from AI to FCA and back

ion, taxonomies, connectivity : from AI to FCA and back