The Tactical Language Training System (TLTS) is a speech-enabled computer learning environment designed to teach Arabic spoken communication to American English speakers (and is described in a companion paper(Johnson et al, 2004)). This paper elaborates upon the modeling and detection of learner speech errors along multiple levels of linguistic details ranging from segmental to lexico-semantic ...

This paper describes work in progress to use clustering to create a lexicon of words that engage in the lexico-semantic relationship known as grading. While other resources like thesauri and taxonomies exist detailing relationships such as synonymy, antonymy, and hyponymy, we do not know of any thorough resource for grading. This work focuses on identifying the words that may participate in thi...

The paper presents an overview of an attempt at the semantic classification of adjectives in the Bulgarian Wordnet based on the information that is already available in WordNet, and other classifications proposed in the literature (classifications in the linguistic literature for Bulgarian and approaches implemented by other wordnets, more precisely, the Wordnet for German). The proposed approa...

Relationship acquisition has always contributed as an important enhancement to Natural Language Processing. Using “definition extraction” methods proved to be a very useful approach, not only for relationship extraction but also for enhancing the limited coverage of words in WordNet. It also played a major role in developing question answer systems and ontology learning for unrestricted data. V...

This study examined the case of a brain-damaged patient, I.R., who exhibits the pattern of performance typical of persons with a selective short-term memory deficit. Part 1 reveals a dissociation in performance between impaired shortterm memory and preserved long-term memory. Part 2 examines an alternative explanation of I.R. s performance under a processing view of memory that rejects the noti...

Studies in linguistics define lexico-syntactic patterns to characterize the linguistic utterances that can be interpreted with semantic relations. Because patterns are assumed to reflect linguistic regularities that have a stable interpretation, several software implement such patterns to extract semantic relations from text. Nevertheless, a thorough analysis of pattern occurrences in various c...

In this paper, we propose a formal representation of the meaning of sentences involving conceptual metaphors in the context of the research line of Computing with Words and Perceptions. Conceptual metaphors are mappings between conceptual domains that are common in everyday natural language usage. They are not just a matter of lexico-grammar stratum but of representation and processing in the s...

Every convex polyhedron in Rd admits both Hand V-representations. In both types, a representation is canonical if it is minimal and unique up to some elementary operations. In this paper, we show the duality of canonical representations and that the canonical V-representations coincide with certain canonical H-representations. Also, we show how the lexico-smallest representation, a computationa...