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knaggy adj.節多的;疙瘩多的。

knap

The disquisition includes choice of algorithm , accomplish of algorithm , collection of learning sample , parameter of net , shortcoming of bp algorithm , extraction and reduction form line etc . referring to shortcoming of traditional bp algorithm , a modified learning factor with adaptation is introduced . because of every different font has robust , the way based chain coded and knaggy feature is used . a bizarre sample feature database is constructed for speeding up modified bp learning and classification 本文對人工神經網絡理論進行了研究,探討了網絡形式及算法的選擇、算法的實現、學習樣本的收集、網絡參數選擇、 bp算法缺陷、表格線提取、還原、生成及字符識別、還原生成等問題,并針對bp算法的缺陷提出了和實現了改進型bp算法,使網絡學習效率提高,對不同人的不同字型字體有較強的魯棒性,采用了基于鏈碼特征和凹凸分布特征的方法來抽取字符特征。

Knaggy wood texture 凹凸感木紋