Leo Võhandu

Independent Interactive Testing of Interactive Relational Systems

Many ontologies and WordNet type dictionaries have been created with different interactive tools using specalists semantic knowledge to model complicated relational structures. All that type man-machine systems have usually many inconsistencies which are not easy to find. In our article we present a formal methodology which analyzes and tests any given relational table and hands out with a high probability erroneus subpatterns. The final testing and estimating will again be made by a specialist. While looking for structural and lexicographic errors we present the three most known substructures that point to possible errors in wordnet hierarchical structure. An additional substructure to the group of three is a new relative structure called heart-shaped substructure. The nature of the errors for those four substructures has been described. A program written by authors is finding all such substructures in Princeton WordNet (PrWN, version 3.1) and Estonian WordNet (EstWN, version 65). The central type of error in the new substructure have been described only for Princeton WordNet.

New Test Patterns to Check the Hierarchical Structure of Wordnets

The goal of this paper is to introduce test patterns for checking inconsistencies in the hierarchical structure of wordnets. Every test pattern (displayed as a substructure) points out the cases of multiple inheritance and two of them are studied in depth by expert linguists, or lexicographers. Furthermore, this research associates test patterns with the inconsistencies they help to detect in wordnets, and presents instances of the test patterns. All examples use the Estonian Wordnet (Versions 66 or 67), some results we are shown for the Princeton WordNet (Version 3.1).