Defect classification apparatus

US8977580B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-8977580-B2
Application numberUS-201113703536-A
CountryUS
Kind codeB2
Filing dateJun 8, 2011
Priority dateJun 14, 2010
Publication dateMar 10, 2015
Grant dateMar 10, 2015

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Abstract

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The present invention has its objective to provide a defect classification apparatus which suppresses over-fitting and accurately classify the defect type of a defect. A defect classification apparatus is provided in which a data point indicating feature information of a defect to be classified having an unknown defect type is mapped to a point in a mapping space having a dimensional number higher than the number of features constituting the feature information, and the defect type of the defect to be classified is classified based on in which of two regions of defect type, which are formed by separating the mapping space by a decision boundary, the mapped point is located, wherein a discriminant function indicating the decision boundary is determined by adopting a weight which minimizes the sum of the classification error, which corresponds to the accuracy in classifying a training defect dataset, and a regularization term, which has a positive correlation with the dimensional number of the decision boundary, as the weight for each feature constituting the discriminant function.

First claim

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The invention claimed is: 1. A defect classification apparatus in which a data point indicating feature information whose components include a plurality of features indicating attributes of a defect to be classified having an unknown defect type is mapped to a point in a mapping space which has a dimensional number higher than the number of the features constituting the feature information, and determination is made as to which of two regions of defect type, which are formed by sep…

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What does patent US8977580B2 cover?
The present invention has its objective to provide a defect classification apparatus which suppresses over-fitting and accurately classify the defect type of a defect. A defect classification apparatus is provided in which a data point indicating feature information of a defect to be classified having an unknown defect type is mapped to a point in a mapping space having a dimensional number hig…
Who is the assignee on this patent?
Anayama Kazunori, Yadoguchi Tetsuya, Suzuma Toshiyuki, and 5 more
What technology area does this patent fall under?
Primary CPC classification G06N99/005. Mapped technology areas include Physics.
When was this patent published?
Publication date Tue Mar 10 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).