Metodi di analisi per lo studio di un gruppo di sigilli cilindrici vicino-orientali e di altre immagini strutturate

Sergio Camiz, Elena Rova

«Archeologia e Calcolatori» 1996, 7, 647-659

Abstract

In order to analyse a corpus of 963 Near-Eastern Uruk/Jemdet Nasr period sealings, three levels of image structure were identified, as being a) the presence of iconographic elements, b) the presence of subpattern, i.e. small images contributing as a whole to the total image, and c) the general image pattern, considered only under the syntactical point of view. This paper is based on second level analyses, performed through textual exploratory analysis of a formalized text describing the sealings images. Two different textual correspondence analyses were performed: the first on textual forms and the second on repeated segments, i.e. repeated sequences of forms considered as a whole. In the paper, the quality of results is discussed, in particular comparing them to classical techniques based on manual coding and to a previous coding. In this case, a better distinction of different sealings groups resulted from forms analysis, whereas the one on repeated segments, although repeating the forms analysis general pattern, seems less satisfactory. Both results suggest to modify the automatic procedures used so far, in order to limit attention to presence/absence of forms on one side and to select manually the repeated segments actually corresponding to a subpattern, rather than considering all of them.

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