Cardinality and frequency estimation - CS 591 K1: Data Stream Processing and Analytics Spring 2020hashes x to any of N values with probability 1/N. Out of all x we hash: • around 50% will have a binary representation that ends in at least one 0: • ********0 (the probability of a 0 is 1/2) • around hashes x to any of N values with probability 1/N. Out of all x we hash: • around 50% will have a binary representation that ends in at least one 0: • ********0 (the probability of a 0 is 1/2) • around hashes x to any of N values with probability 1/N. Out of all x we hash: • around 50% will have a binary representation that ends in at least one 0: • ********0 (the probability of a 0 is 1/2) • around0 码力 | 69 页 | 630.01 KB | 1 年前3
Streaming languages and operator semantics - CS 591 K1: Data Stream Processing and Analytics Spring 2020Boston University 2020 A unary operator G is monotonic if L1 ⊆τ S1 implies G(L1) ⊆τ G(S1). A binary operator H is monotonic when (L1, L2) ⊆τ (S1, S2) implies H(L1, L2) ⊆τ H(S1, S2). For τ = 0, S argument(s). A non-null unary operator G is non-blocking, when Gτ (S) = G(Sτ), for every τ. A non-null binary operator G is non-blocking, when, Gτ (L, S) = G(Lτ , Sτ), for every τ. 48 Vasiliki Kalavri | Boston0 码力 | 53 页 | 532.37 KB | 1 年前3
PyFlink 1.15 Documentationand without Scala dependency since Flink 1.16. If you want to use Scala 2.12, you can download the binary distribution of Scala 2.12, unzip it and then set the environment variable FLINK_HOME to point to0 码力 | 36 页 | 266.77 KB | 1 年前3
PyFlink 1.16 Documentationand without Scala dependency since Flink 1.16. If you want to use Scala 2.12, you can download the binary distribution of Scala 2.12, unzip it and then set the environment variable FLINK_HOME to point to0 码力 | 36 页 | 266.80 KB | 1 年前3
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