Istituto di Scienza e Tecnologie dell'Informazione     
Bertino E., Marinaro F. An evaluation of text access methods. Internal note IEI-B4-23, 1988.
In this paper we present an evaluation of two access methods for text retrieval, based on signature file techniques (FILE69). 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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