We continue the investigation of algorithmically random functions and closed sets, and in particular the connection with the notion of capacity. We study notions of random continuous functions given in terms of a family of computable measures called symmetric Bernoulli measures. We isolate one particular class of random functions that we refer to as random online functions F, where the value of y(n) for y = F(x) may be computed from the values of x(0),..., x(n). We show that random online functions are neither onto nor one-to-one. We give a necessary condition on the members of the ranges of random online functions in terms of initial segment complexity and the associated computable capacity. Lastly, we introduce the notion of Martin-Löf random online partial function on 2 ω and give a family of online partial random functions the ranges of which are precisely the random closed sets introduced in [2]
CITATION STYLE
Cenzer, D., & Porter, C. P. (2015). Algorithmically random functions and effective capacities. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 9076, pp. 23–37). Springer Verlag. https://doi.org/10.1007/978-3-319-17142-5_4
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