OBJECTIVES To investigate three aspects of the redundancy of hierarchical relations across biomedical terminologies: 1) What proportion of the relations is redundant?, 2) Which terminologies tend to overlap with other terminologies?, and 3) Is there a link between redundancy and semantic consistency?. METHODS Hierarchical relations are counted in the various families of terminologies integrat...

Semantic relations of different types have played an important role in wordnet, and have been widely recognized in various fields. In recent years, with the growing interests of constructing semantic network in support of intelligent systems, automatic semantic relation discovery has become an urgent task. This paper aims to extract semantic relations relying on the in situ morpho-semantic stru...

Electronic sense inventories are needed for Word Sense Disambiguation (WSD) in Natural Language Processing (NLP) applications. However, existing sense inventories are criticized for being inadequate for this task. The fine granularity of the senses described in these resources is not always needed in NLP applications. Furthermore, the senses are listed without any information on their distingui...

Several approaches for extracting semantic relations from various types of resources have been proposed during the last years. While already of great value when used separately, combining these techniques promises to lead to even broader and more reliable results. However, divergent information may occur when assembling such data. We present LexO, a framework for integrating semantic relations ...

Auditing biomedical terminologies often results in the identification of inconsistencies and thus helps to improve their quality. In this paper, we present a method based on Semantic Web technologies for auditing biomedical terminologies and apply it to the NCI thesaurus. We stored the NCI thesaurus concepts and their properties in an RDF triple store. By querying this store, we assessed the co...

The purpose of this work is to develop automatic methods of semantic integrity maintenance, in support of concurrent engineering. Semantic integrity relations in any final engineering design are built up incrementally, through the use of different computer applications. Here, the structure of these integrity relations are formalized for representation within a database. When changes to a design...

Many English noun pairs suggest an almost limitless array of semantic interpretation. A fruit bowl might be described as a bowl for fruit, a bowl that contains fruit, a bowl for holding fruit, or even (perhaps in a modern sculpture class), a bowl made out of fruit. These interpretations vary in syntax, semantic denotation, plausibility, and level of semantic detail. For example, a headache pill...

We present a method for training a semantic parser using only a knowledge base and an unlabeled text corpus, without any individually annotated sentences. Our key observation is that multiple forms of weak supervision can be combined to train an accurate semantic parser: semantic supervision from a knowledge base, and syntactic supervision from dependencyparsed sentences. We apply our approach ...