Many CPUs have "vector" or "SIMD" instruction sets which apply the same operation simultaneously to two, four, or more pieces of data. ... <看更多>

Most of R's functions are vectorized, meaning that the function will operate ... Make a new column in the gapminder data frame that contains population in ... ... <看更多>

In that context, you typically start with some low-level, noisy representation of the data, then pass it through some algorithm to transform it ... ... <看更多>