VLSI circuit structure for determining the edit distance between

Details VLSI circuit structure for determining the edit distance between VLSI circuit structure for determining the edit distance between

1994-09-30

1996-09-03

Teska, Kevin J.

Boots, shoes, and leggings

364488, 364489, 364490, 364491, 395375, 395800, 395600, 341 51, 341 67, 371 371, 371 376, G06F 300, G06F 1500

Patent

active

055532721

ABSTRACT:
The edit distance between two strings a.sub.1, . . . , a.sub.m and b.sub.1, . . . , b.sub.n is the minimum cost s of a sequence of editing operations (insertions, deletions and substitutions) that convert one string into the other. This invention provides VLSI circuit structure for computing the edit distance between two strings over a given alphabet. The circuit structure can perform approximate string matching for variable edit costs. More importantly, the circuit structure does not place any constraint on the lengths of the strings that can be compared. It makes use of simple basic cells and requires regular nearest-neighbor communication, which makes it suitable for VLSI implementation.

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