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http://dbpedia.org/ontology/abstract In applied mathematics, a bit-reversal perIn applied mathematics, a bit-reversal permutation is a permutation of a sequence of items, where is a power of two. It is defined by indexing the elements of the sequence by the numbers from to , representing each of these numbers by its binary representation (padded to have length exactly ), and mapping each item to the item whose representation has the same bits in the reversed order. Repeating the same permutation twice returns to the original ordering on the items, so the bit reversal permutation is an involution. This permutation can be applied to any sequence in linear time while performing only simple index calculations. It has applications in the generation of low-discrepancy sequences and in the evaluation of fast Fourier transforms.the evaluation of fast Fourier transforms. , Em matemática aplicada, uma ordenação bit-Em matemática aplicada, uma ordenação bit-reversa ou uma permutação bit-reversa é uma permutação de uma seqüência de n itens, onde n = 2k é uma potência de dois. Ele é definido pela indexação de elementos da sequência, os números de 0 a n − 1 e, em seguida, invertendo as representações binárias de cada um desses números (acolchoado para que cada um destes números binários tenha comprimento de exatamente k). Cada item é mapeado para a nova posição dada por este valor invertido. O bit de reversão de permutação é uma involução, então repetindo a mesma permutação duas vezes retorna-se para a ordenação original sobre os itens. para a ordenação original sobre os itens.
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rdfs:comment In applied mathematics, a bit-reversal perIn applied mathematics, a bit-reversal permutation is a permutation of a sequence of items, where is a power of two. It is defined by indexing the elements of the sequence by the numbers from to , representing each of these numbers by its binary representation (padded to have length exactly ), and mapping each item to the item whose representation has the same bits in the reversed order. Repeating the same permutation twice returns to the original ordering on the items, so the bit reversal permutation is an involution.bit reversal permutation is an involution. , Em matemática aplicada, uma ordenação bit-Em matemática aplicada, uma ordenação bit-reversa ou uma permutação bit-reversa é uma permutação de uma seqüência de n itens, onde n = 2k é uma potência de dois. Ele é definido pela indexação de elementos da sequência, os números de 0 a n − 1 e, em seguida, invertendo as representações binárias de cada um desses números (acolchoado para que cada um destes números binários tenha comprimento de exatamente k). Cada item é mapeado para a nova posição dada por este valor invertido. O bit de reversão de permutação é uma involução, então repetindo a mesma permutação duas vezes retorna-se para a ordenação original sobre os itens. para a ordenação original sobre os itens.
rdfs:label Bit-reversal permutation , Ordenação bit-reversa
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