Istituto di Scienza e Tecnologie dell'Informazione     
Bertino E., Marinaro F. An evaluation of text access methods. In: The Twenty-Second Annual Hawaii International Conference on System Sciences (Kailua-Kona, Hawaii, 1989). Proceedings, vol. II pp. 810 - 819. B. D. Shriver (ed.). IEEE, 1989.
In this paper we present an evaluation of two access methods for text retrieval, based on signature file techniques. In particular analytical formulae are presented that model access cost functions. The cost functions are presented for both magnetic and optical devices, in an environment where the text access methods are integrated with indexes.

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