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The Flajolet–Martin algorithm is an algorithm for approximating the number of distinct elements in a stream with a single pass and space-consumption logarithmic in the maximal number of possible distinct elements in the stream (the count-distinct problem).
For this class of problems, there is a vector = (, …,) (initialized to the zero vector ) that has updates presented to it in a stream. The goal of these algorithms is to compute functions of a {\displaystyle \mathbf {a} } using considerably less space than it would take to represent a {\displaystyle \mathbf {a} } precisely.
create a new array of references of length count and component type identified by the class reference index (indexbyte1 << 8 | indexbyte2) in the constant pool areturn b0 1011 0000 objectref → [empty] return a reference from a method arraylength be 1011 1110 arrayref → length get the length of an array astore 3a 0011 1010 1: index objectref →
In computer science, stream processing (also known as event stream processing, data stream processing, or distributed stream processing) is a programming paradigm which views streams, or sequences of events in time, as the central input and output objects of computation.
If two successive characters in the input stream could be encoded only as literals, the length of the length–distance pair would be 0. LZSS improves on LZ77 by using a 1-bit flag to indicate whether the next chunk of data is a literal or a length–distance pair, and using literals if a length–distance pair would be longer.
In these languages, an operation that operates on entire arrays can be called a vectorized operation, [1] regardless of whether it is executed on a vector processor, which implements vector instructions. Array programming primitives concisely express broad ideas about data manipulation.
In computing, vectored I/O, also known as scatter/gather I/O, is a method of input and output by which a single procedure call sequentially reads data from multiple buffers and writes it to a single data stream (gather), or reads data from a data stream and writes it to multiple buffers (scatter), as defined in a vector of buffers.
Standard input is a stream from which a program reads its input data. The program requests data transfers by use of the read operation. Not all programs require stream input.