This article outlines a quantitative method for segmenting texts into thematically coherent units. This method relies on a network of lexical collocations to compute the thematic coherence of the different parts of a text from the lexical cohesiveness of their words. We also present the results of an experiment about locating boundaries between a series of concatened texts. 1 I n t r o d u c t ...

Lexical unit is a word or collocation. Extracting lexical knowledge is an essential and difficult task in NLP. The methods of extracting of lexical units are discussed. We present a method for the identification of lexical boundaries. The problem of necessity of large corpora for training is discussed. The advantage of identification of lexical boundaries within a text over traditional window m...

The study of lexical semantics has produced a systematic analysis of relationships between content words that has greatly bene ted both lexical search tools and natural language processing systems. We describe research toward a common algorithmic core for these two applications. We rst introduce a database system called FreeNet that facilitates the description and exploration nite binary relati...

This study compared the use of lexical knowledge and stress cues in segmentation by Mandarin second language (L2) of English. Previous research has shown that native English speakers reliably use lexical cues but not stress cues. However, L2 learners may have difficulty using lexical knowledge in segmentation due to their limited vocabulary size. Instead, Mandarin L2 learners may rely on stress...

Lexical information facilitates speech perception, especially when sounds are ambiguous or degraded. The interactive approach to understanding this effect posits that this facilitation is accomplished through bi-directional flow of information, allowing lexical knowledge to influence pre-lexical processes. Alternative autonomous theories posit feed-forward processing with lexical influence rest...

The paper deals with current lexical databases that are seen as a basis for broad-coverage general-purpose ontologies. Various extensions and refinements of existing multilingual lexical knowledge bases are proposed with the aim of improving the capabilities of these resources. The main goal lies in the effort to gain a better lexical knowledge representation, which is crucial to coping with th...

This paper explores the use of bilingual parallel corpora as a source of lexical knowledge for cross-lingual textual entailment. We claim that, in spite of the inherent difficulties of the task, phrase tables extracted from parallel data allow to capture both lexical relations between single words, and contextual information useful for inference. We experiment with a phrasal matching method in ...

Listeners retune the boundaries between phonetic categories to adjust to individual speakers' productions. Lexical information, for example, indicates what an unusual sound is supposed to be, and boundary retuning then enables the speaker's sound to be included in the appropriate auditory phonetic category. In this study, it was investigated whether lexical knowledge that is known to guide the ...

“WordNet® is a large lexical database of English, developed under the direction of George A. Miller. Nouns, verbs, adjectives and adverbs are grouped into sets of cognitive synonyms (synsets), each expressing a distinct concept. Synsets are interlinked by means of conceptualsemantic and lexical relations.” (see the project’s web site http://wordnet.princeton.edu/ ) . WordNets have been develope...

Irregular lexemes are standardly regular in some respect. Most are just like regular lexemes except that they deviate in one or two characteristics. What is needed is a natural way of saying \this lexeme is regular except for this property". One obvious approach is to use nonmonotonicity and inheritance machinery to capture such lexical irregularity (and subregularity), and much recent research...