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1 天前 · Japanese (日本語, Nihongo, [ɲihoŋɡo] ⓘ) is the principal language of the Japonic language family spoken by the Japanese people. It has around 120 million speakers, primarily in Japan, the only country where it is the national language, and within the Japanese diaspora worldwide. The Japonic family also includes the Ryukyuan languages ...
1 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.
6 天前 · Scope. Matrix calculus refers to a number of different notations that use matrices and vectors to collect the derivative of each component of the dependent variable with respect to each component of the independent variable. In general, the independent variable can be a scalar, a vector, or a matrix while the dependent variable can be any of ...
2 天前 · The United Nations Educational, Scientific and Cultural Organization (UNESCO) is a specialized agency of the United Nations (UN) with the aim of promoting world peace and security through international cooperation in education, arts, sciences and culture. It has 194 member states and 12 associate members, as well as partners in the non-governmental, intergovernmental and private sector.
2 天前 · French Revolution. The French Revolution [a] was a period of political and societal change in France that began with the Estates General of 1789, and ended with the coup of 18 Brumaire in November 1799 and the formation of the French Consulate. Many of its ideas are considered fundamental principles of liberal democracy, [1] while its values ...
3 天前 · Sydney Opera House. / -33.85681; 151.21514. The Sydney Opera House is a multi-venue performing arts centre in Sydney, Australia. Located on the foreshore of Sydney Harbour, it is widely regarded as one of the world's most famous and distinctive buildings and a masterpiece of 20th-century architecture.
19 小時前 · Ancient Egypt was a civilization of ancient Northeast Africa.It was concentrated along the lower reaches of the Nile River, situated in the place that is now the country Egypt.Ancient Egyptian civilization followed prehistoric Egypt and coalesced around 3100 BC (according to conventional Egyptian chronology) with the political unification of Upper and Lower Egypt under Menes (often identified ...
