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- W2092052194 abstract "By dynamic algorithms we mean algorithms that operate on dynamically varying data structures (dictionaries, priority queues, linear lists) subject to insertions I, deletions D, positive (negative) queries Q+ (Q−). Let us remember that dictionaries are implementable by unsorted or sorted lists, binary search trees, priority queues by sorted lists, binary search trees, binary tournaments, pagodas, binomial queues and linear lists by sorted or unsorted lists, etc. At this point the following question is very natural in computer science: for a given data structure, which representation is the most efficient? In comparing the space or time costs of two data organizations A and B for the same operations, we cannot merely compare the costs of individual operations for data of given sizes: A may be better than B on some data, and vice versa on others. A reasonable way to measure the efficiency of a data organization is to consider sequences of operations on the structure. Françon (1978, 1979) Knuth (1977) discovered that the number of possibilities for the ith insertion or negative query is equal to i, but that for deletions and positive queries this number depends on the size of the data structure. Answering the questions raised by Françon and Knuth is the main object of this paper more precisely, we show how to obtain limiting processes; how to compute explicitly the average costs; how to obtain variance estimates; that the costs coverage as n → ∞ to random variables, either Gaussian or depending on Brownian excursion functionals (the limiting distributions are, therefore, completely described). To our knowledge such a complete analysis has never been done before dynamic algorithms in Knuth's model." @default.
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- W2092052194 date "1992-02-01" @default.
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- W2092052194 title "Dynamic algorithms in D.E. Knuth's model: a probabilistic analysis" @default.
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- W2092052194 doi "https://doi.org/10.1016/0304-3975(92)90330-i" @default.
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