A characterisation is given of edge-transitive Cayley graphs of valency 4 on odd number of vertices. The characterisation is then applied to solve several problems in the area of edge-transitive graphs: answering a question proposed by Xu (1998) regarding normal Cayley graphs; providing a method for constructing edge-transitive graphs of valency 4 with arbitrarily large vertex-stabiliser; const...

The paper presents details and comparison of two valuable language resources for Czech, two independent verb valency frames electronic dictionaries. The FIMU verb valency frames dictionary was designed during the EuroWordNet project and contains semantic roles and links to the Czech wordnet semantic network. The VALLEX 1.0 format is based on the formalism of the Functional Generative Descriptio...

— The overall stoichiometry compensation through transition ion valency changes has been studied in CuGaS2. For this purpose, Ni and Fe were used as ionic sensors of the matrix state, as these impurities are already present in the as-grown material. The valency changes could be observed either by electron spin resonance or Mossbauer absorption. With increasing sulphur content, the valency of Fe...

This paper describes an experiment combining several existing data resources (parallel corpora, valency lexicon, morphological taggers, bilingual dictionary etc.) and exploiting them in a task of building a valency lexicon for a related language (Russian) derived from a high quality manually created valency lexicon for Czech (Vallex) containing several thousands of verbs with very rich syntacti...

The main objective of this paper is to introduce an alternation-based model of valency lexicon of Czech verbs VALLEX. Alternations describe regular changes in valency structure of verbs – they are seen as transformations taking one lexical unit and return a modified lexical unit as a result. We characterize and exemplify ‘syntactically-based’ and ‘semantically-based’ alternations and their effe...

The arduous modelling of reactions at heterogeneous catalysts is greatly simplified when adsorption-energy scaling relations between intermediates exist. Generally, the offset these linear structure-independent slope unity and otherwise depends on coordination number active sites. Here we examine adsorption *C, *CH, *CH2, *CH3 *COH five different surface sites nine transition metals to establis...

In this study we have compared Czech and Russian valency frames based on monolingual and bilingual data. We assume that Czech and Russian are close enough to have, for the majority of their verbs, similar valency structures . We have exploited Vallex as a source of valency frames and have used a Czech-Russian dictionary to automatically translate Czech verbs into Russian. Afterwards, we have ma...

In this paper, alternation based model of the valency lexicon of Czech verbs, VALLEX, is described. Two types of alternations (changes in valency frames of verbs) are distinguished on the basis of used linguistic means: (i) grammaticalized alternations and (ii) lexicalized alternations. Both grammaticalized and lexicalized alternations are either conversive, or non-conversive. While grammatical...

We describe CzEngVallex, a bilingual Czech-English valency lexicon which aligns verbal valency frames and their arguments. It is based on a parallel Czech-English corpus, the Prague Czech-English Dependency Treebank, where for each occurrence of a verb a reference to the underlying Czech and English valency lexicons is explicitly recorded. CzEngVallex lexicon pairs the entries (verb senses) of ...

In this paper, we propose a method of the representation of Czech diatheses in the valency lexicon of Czech verbs, VALLEX. Under the term diatheses, specific relations between uses of the same verb lexeme are considered here. These relations are associated with changes in valency frames of verbs which stem from the changes in the linking of situational participants, valency complementations and...