principalcomponent

中英词典：principal component

形容词

principal component（形容词）：主成分的；最重要的部分的

名词

principal component（名词）： 1. 主成分（统计学中指数据集中方差最大的方向） 2. （数学）主分量 3. （机械）主要部分；主要零件

词语辨析

principal与component都是英语中常见的词汇，分别表示"主要的"和"组成部分"。当它们连接在一起时，即principal component，指的是在统计学和数学中，通过对数据进行特定变换而得到的一组新的变量，这些变量是原始数据中变化最大的方向。此外，在机械领域中，主要部分或主要零件也可以称为principal component。

词汇扩充

- principal - component - principal axis - principal curve - principal eigenvalue - principal plane - principal point - principal stress

近义词

- main component - primary component - leading component

反义词

- secondary component

柯林斯词典

principal component (noun) 1. In statistics, one of a set of values that are derived from a larger set of values and that, when used, give information about the larger set. 2. (in linear algebra) any of a set of values that satisfy a polynomial equation whose coefficients are given. 3. (in mechanical engineering) a major part or assembly, as in a complex machine.

牛津词典

principal component (noun) 1. Each of a set of values of a statistical variable that correspond to linearly independent vectors. 2. A component of a mechanical or electrical system that has the highest value of a specified property.

用法

- The principal component analysis revealed the main factors influencing customer satisfaction. - In linear algebra, the principal components are obtained by diagonalizing the covariance matrix. - The principal component of the machine failed, causing the entire system to shut down.

相关例句

1. The first principal component explained 70% of the variance in the dataset. （第一个主成分解释了数据集中70％的方差。）
2. Principal component analysis is widely used in data reduction and pattern recognition. （主成分分析广泛应用于数据降维和模式识别。）
3. The principal component of the algorithm is the optimization step. （该算法的主要部分是优化步骤。）
4. She focused on the principal components that contributed the most to the overall success of the project. （她关注了对项目整体成功贡献最大的主要因素。）
5. The principal component method simplifies complex data structures by transforming them into a new coordinate system. （主成分方法通过将复杂的数据结构转化为新的坐标系来简化数据。）
6. The failure of the principal component caused a chain reaction that led to the system shutdown. （主要零件的故障导致了一连串的反应，最终导致系统关闭。）
7. Researchers used principal component analysis to identify the most important features of the dataset. （研究人员使用主成分分析识别数据集中最重要的特征。）
8. Each principal component represents a linear combination of the original variables. （每个主成分代表着原始变量的线性组合。）
9. The principal component approach simplifies the analysis by reducing the dimensionality of the data. （主成分方法通过减少数据的维度来简化分析。）
10. The principal component of the software is its ability to automate repetitive tasks. （该软件的主要特点是能够自动化重复的任务。）
11. By selecting the principal components, we can capture the essential information of the dataset. （通过选择主成分，我们可以捕捉数据集的基本信息。）
12. The principal component represents the direction of maximum variation in the data. （主成分代表数据中变化最大的方向。）
13. Principal component analysis can be used to reduce the dimensionality of high-dimensional data. （主成分分析可用于降低高维数据的维度。）
14. The principal component algorithm is widely used in image processing. （主成分算法广泛应用于图像处理。）
15. Identifying the principal components can help uncover hidden patterns in the data. （确定主成分可以帮助揭示数据中的隐藏模式。）
16. The principal component of the system is responsible for controlling the overall operation. （该系统的主要部件负责控制整体运行。）
17. By examining the principal components, we can understand the underlying structure of the data. （通过研究主成分，我们可以了解数据的潜在结构。）
18. Principal component analysis is a useful tool for dimensionality reduction in machine learning. （主成分分析是机器学习中降维的有用工具。）
19. The principal component captures the most important information of the dataset in a compact form. （主成分以紧凑的形式捕捉了数据集的最重要信息。）
20. The principal component method is widely used in signal processing for noise reduction. （主成分方法在信号处理中被广泛用于降噪。）