numerical taxonomy and seed storage protein analysis of hyoscyamus species of iran was carried out with the aim to illustrate species inter-relationship and to check the sub-generic taxonomic treatment proposed for the genus. cluster analysis of morphological and protein data grouped the species in three separate clusters which supports the relationships of h. niger with h. reticulatus and h. k...

A defining context is a part of a text or a statement that provides information about a concept, based on its use. Defining contexts extraction from texts is an important task in many applications as an aid in the construction of ontologies, the development of material aid to translation, creation of glossaries, dictionaries, among others. Thus, this paper proposes, implements and evaluates a s...

Many of the current automatic differentiation (AD) tools have similar characteristics. Unfortunately, it is often the case that the similarities between these various AD tools can not be easily ascertained by reading the corresponding documentation. To clarify this situation, a taxonomy of AD tools is presented. The taxonomy places AD tools into the Elemental, Extensional, Integral, Operational...