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2 天前 · Principal component analysis (PCA) is a linear dimensionality reduction technique with applications in exploratory data analysis, visualization and data preprocessing. The data is linearly transformed onto a new coordinate system such that the directions (principal components) capturing the largest variation in the data can be easily identified.
2 天前 · UTF-8 is a variable-length character encoding standard used for electronic communication. Defined by the Unicode Standard, the name is derived from Unicode Transformation Format – 8-bit.[1] UTF-8 is capable of encoding all 1,112,064[a] valid Unicode code points using one to four one-byte (8-bit) code units. Code points with lower numerical ...
2 天前 · The Northrop B-2 Spirit, also known as the Stealth Bomber, is an American heavy strategic bomber, featuring low-observable stealth technology designed to penetrate dense anti-aircraft defenses. A subsonic flying wing with a crew of two, the plane was designed by Northrop (later Northrop Grumman) as the prime contractor, with Boeing, Hughes, and ...
2 天前 · A mathematical symbol is a figure or a combination of figures that is used to represent a mathematical object, an action on mathematical objects, a relation between mathematical objects, or for structuring the other symbols that occur in a formula.
1 天前 · Human evolution is the evolutionary process within the history of primates that led to the emergence of Homo sapiens as a distinct species of the hominid family that includes all the great apes. [1] .
3 天前 · David Keith Lynch (born January 20, 1946) is an American filmmaker, visual artist, and musician. Lynch has received critical acclaim for his films, which are often distinguished by their surrealist, dreamlike qualities. Lynch studied painting before he began making short films in the late 1960s. His first feature-length film was Eraserhead ...
2 天前 · C. S. Lewis. Clive Staples Lewis FBA (29 November 1898 – 22 November 1963) was a British writer, literary scholar, and Anglican lay theologian. He held academic positions in English literature at both Magdalen College, Oxford (1925–1954), and Magdalene College, Cambridge (1954–1963). He is best known as the author of The Chronicles of ...
