April 2016
Beginner to intermediate
304 pages
8h 54m
English
Content preview from Big Data and Business Analytics
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196 • Big Data and Business Analytics
function over a unique element of the input list, and write out the
serialized results to a dierent column of the Bigtable.
• ird, and nally, the calling R instance reads back in the serialized
return values from each worker task, performs the necessary error
handling, and returns the computed list to the google.apply() caller.
e next three subsections provide more detail about each of these
three steps.
Lexical Scoping and Serialization in R
To reduce the eort of utilizing Google’s parallel infrastructure for statis-
tical computations, we opted to automatically serialize the calling envi-
ronment and ...
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