系统工程理论与实践
繫統工程理論與實踐
계통공정이론여실천
Systems Engineering—Theory & Practice
2014年
5期
1297~1304
,共null页
常雷雷 李孟军 鲁延京 程贲 张晓航
常雷雷 李孟軍 魯延京 程賁 張曉航
상뢰뢰 리맹군 로연경 정분 장효항
RIMER 置信规则库 主成分分析 结构学习
RIMER 置信規則庫 主成分分析 結構學習
RIMER 치신규칙고 주성분분석 결구학습
RIMER; belief rule base; principal component analysis; structure learning
为了解决前提属性过多时置信规则库规模的组合爆炸问题,提出了基于主成分分析的置信规则库结构学习方法.首先将前提属性转化为新的空间中的若干个主成分,再利用载荷矩阵反推出对于各主成分贡献较大的关键前提属性.以某装甲装备体系综合能力评估作为示例分析,对比研究了在单方案和多方案条件下结构学习方法与RIMER方法,验证了本文提出的结构学习方法的有效性.示例分析结果显示本文提出的结构学习方法可大幅约减置信规则库的规模,与RIMER方法的计算结果一致,并且具有较强的鲁棒性.
為瞭解決前提屬性過多時置信規則庫規模的組閤爆炸問題,提齣瞭基于主成分分析的置信規則庫結構學習方法.首先將前提屬性轉化為新的空間中的若榦箇主成分,再利用載荷矩陣反推齣對于各主成分貢獻較大的關鍵前提屬性.以某裝甲裝備體繫綜閤能力評估作為示例分析,對比研究瞭在單方案和多方案條件下結構學習方法與RIMER方法,驗證瞭本文提齣的結構學習方法的有效性.示例分析結果顯示本文提齣的結構學習方法可大幅約減置信規則庫的規模,與RIMER方法的計算結果一緻,併且具有較彊的魯棒性.
위료해결전제속성과다시치신규칙고규모적조합폭작문제,제출료기우주성분분석적치신규칙고결구학습방법.수선장전제속성전화위신적공간중적약간개주성분,재이용재하구진반추출대우각주성분공헌교대적관건전제속성.이모장갑장비체계종합능력평고작위시례분석,대비연구료재단방안화다방안조건하결구학습방법여RIMER방법,험증료본문제출적결구학습방법적유효성.시례분석결과현시본문제출적결구학습방법가대폭약감치신규칙고적규모,여RIMER방법적계산결과일치,병차구유교강적로봉성.
A structure learning approach is proposed using the principal component analysis (PCA) in order to downsize the belief rule base (BRB). First, we select the principal components (PCs) from the attributes, and then identify the attributes with bigger contributions to the PCs using the loading matrix. A numerical case study to evaluate the comprehensive capability for an armored system of systems is analyzed under both single input and multiple inputs scenarios. The efficiency of the proposed approach is validated by the results of the case study: the BRB is significantly downsized and the consistency between the proposed approach and RIMER is preserved. Besides, the robustness of the structure learning approach is further verified.