The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 06, 2001
Filed:
Aug. 12, 1997
J. Barry Shackleford, Tokyo, JP;
Etsuko Okushi, Tokyo, JP;
Mitsuhiro Yasuda, Tokyo, JP;
Takashi Iwamoto, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A fitness function circuit for computing a fitness value for a trial solution to a set covering problem accelerates the execution speed of a genetic algorithm provided with a matrix circuit for outputting a column signal covered by a row signal corresponding to a bit in a chromosome, a column signal counter for counting column signals, a subtractor for calculating a difference between a counted number of column signals and a number of all elements and outputting the difference as a number of uncovered elements, a carry-save-adder for outputting a number of valid row signals as a chromosome cost, an aggregate cost register for holding the number of uncovered elements as a more significant portion of a total cost and the chromosome cost as a less significant portion of the total cost and outputting the total cost, an inverter for inverting a value of the total cost and outputting an inverted value as a fitness value.