Principal Component Analysis (PCA) is a dimensionality reduction technique used to transform high-dimensional data into a lower-dimensional representation while preserving the most important information. It works by identifying the principal components, which are linear combinations of the original features that capture the maximum variance in the data. These components form a new coordinate system in which the data is projected, resulting in a reduced number of dimensions while minimizing the loss of critical information.
Principal Component Analysis is the ability to simplify complex datasets without sacrificing crucial patterns or relationships. By selecting a subset of principal components that retain the majority of the variance, PCA reduces the computational load and improves the efficiency of machine learning algorithms. It also aids in visualizing data in lower-dimensional spaces, which is valuable for exploring and understanding data structures.
PCA is widely used in various AI applications, including image and signal processing, where the original data may have a high number of features that contribute to noise or redundancy. By identifying the most informative features through PCA, AI models can focus on the most relevant information, leading to improved performance and faster computations. In essence, Principal Component Analysis offers a powerful tool for simplifying data representation and enhancing the efficiency of AI processes.« Back to Glossary Index