Title:
PRODUCE STRATIFICATION DEVICE, PRODUCT STRATIFICATION METHOD, AND COMPUTER PROGRAM
Document Type and Number:
WIPO Patent Application WO/2017/119221
Kind Code:
A1
Abstract:
Provided are a product stratification device, product stratification method, and computer program that can calculate the standard deviation for variation in a characteristic value and the standard deviation for variation in a measured value in a short time without requiring stratification many times for each item.
This product stratification device stratifies products into a prescribed plurality of ranks on the basis of a measured plurality of characteristic values. An average value for the measured plurality of characteristic values and the standard deviation for variations in the plurality of characteristic values are calculated as an assumed standard deviation for each item of characteristics. The plurality of characteristic values for products belonging to at least one rank of the prescribed plurality of ranks is remeasured, and the products are re-stratified into the prescribed plurality of ranks for each item of characteristics on the basis of the remeasured plurality of characteristic values. The number of the products belonging to each rank for each item of characteristics when at least one re-stratification is performed is estimated on the basis of the average value for each item of characteristics calculated for the products and the probability distribution for the assumed standard deviation. The variation in measured values for the products is calculated for each item on the basis of the estimated number.
Inventors:
TSURU TERUHISA (JP)
MATSUNO YUKI (JP)
MATSUNO YUKI (JP)
Application Number:
PCT/JP2016/085864
Publication Date:
July 13, 2017
Filing Date:
December 02, 2016
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
B07C5/38; G06Q50/04
Domestic Patent References:
| WO2010137488A1 | 2010-12-02 | |||
| WO2010137487A1 | 2010-12-02 |
Foreign References:
| JP2007139621A | 2007-06-07 | |||
| JP2004174292A | 2004-06-24 |
Attorney, Agent or Firm:
FUKUNAGA Masaya (JP)
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