主成分分析的实际应用浅探
毕业论文关键词：主成分分析；综合评价；SPSS
Abstract With social progress and economic development , aspects of people's thinking has become increasingly comprehensive, will depart from multiple indicators to think , not just a few indicators from inpidual departure . A plurality of indicators in order to obtain the final comprehensive evaluation results , the evaluator will establish a certain model through various indicators "synthetic " as an overall indicator . Many strong human factors comprehensive evaluation method , principal component analysis as an important statistical methods , not only can the multi-index problem into less comprehensive index , and can arrive at a more objective evaluation of the results . This article describes the principal component analysis, principal component analysis about the methods and procedures , and the use of principal component analysis comprehensive evaluation , further explained the role of principal component analysis in the comprehensive evaluation , and then explain the advantages and disadvantages in the final main component of a comprehensive evaluation.
Key words： PCA；Comprehensive evaluation；SPSS
目录
摘 要 - 1 -
Abstract - 2 -
1引言 - 4 -
1.1研究的背景和意义 - 4 -
1.2主成分综合评价的历史与现状 - 4 -
1.3本文研究思路与结构安排 - 5 -
1.3.1研究思路 - 5 -
1.3.2结构安排 - 5 -
2主成分分析 - 6 -
2.1基本概念和意义 - 6 -
2.2基本思想 - 6 -
2.3主成分分析的数学模型 - 6 -
2.4主成分分析的几何解释 - 7 -
2.5主成分分析的基本算法 - 8 -
2.6主成分分析对数据的要求 - 10 -
3运用主成分分析进行综合评价 - 10 -
3.1数据收集 - 10 -
3.2判断数据能否使用主成分分析 - 11 -
3.3主成分的提取 - 12 -
3.4计算综合得分并根据综合得分进行评价 - 13 -
3.5小结 - 14 -
4总结 - 14 -
4.1主成分分析的适用情况 - 14 -
4.2主成分分析进行综合评价的优点 - 15 -
4.3主成分分析进行综合评价的缺点 - 15 -
参考文献 - 16 -
致 谢 - 17 -
1引言
1.1研究的背景和意义
现代的生产方式是向外扩张转化为追求经济效益的内涵式发展，不同于过去追求的是生产规模、水平和发展速度。后者只需要用单一价值为核心的指标体系来衡量，如各种总量指标、相对指标等，而现代的生产方式必须考虑经济效益的各个方面，如劳动力成本、技术改良、生产资料折旧等其他因素，其各个方面的指标也不能像从前一样用单一指标来衡量，而是要综合各方面的指标进行综合评价。
上一篇：关于淘宝网购策略的研究