Patent
1979-07-18
1981-08-25
Nusbaum, Mark E.
G10L 100
Patent
active
042861152
ABSTRACT:
A continuous speech recognition system utilizes a format memory (14) which specifies a sequence of word sets and a plurality of words, or reference patterns, which may be included in each word set. The input pattern sequence is divided into all possible partial patterns having start points p and end points q, and each of these partial patterns is compared with all reference patterns to derive elementary similarity measures. The elementary similarity measures for each combination of a partial pattern and a permitted word in a word set under the specified format are then examined to determine the optimum input pattern segmentation points and corresponding sequence of reference patterns which will yield a maximum similarity result. The maximum similarity is represented by ##EQU1## where S(p(x-1), p(x),n(x)) indicates the degree of similarity between an input partial pattern having a start point p(x-1) and an n point p(x) and a reference word unit n(x) within a word set f.sub.x, and K represents the number of word sets permitted according to the specified format.
REFERENCES:
patent: 3816722 (1974-06-01), Sakoe et al.
patent: 4049913 (1977-09-01), Sakoe
patent: 4059725 (1977-11-01), Sakoe
patent: 4156868 (1979-05-01), Levinson
G. Clapper, "Connected Word Recognition System", IBM Tech. Discl. Bull., Dec. 1969.
Kemeny E. S.
Nippon Electric Co. Ltd.
Nusbaum Mark E.
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