Map and reduce function purpose
Name the map and reduce function purpose with the help of two examples.
Expert
a) Distributed grep: A line is emitted by map function if it matches the pattern. The reduce function refers to an identity function which copies the supplied intermediate data for output.
b) Term-vector per host: In this the map function emits a hostname, vector pair for each document (input). The reduce function adds all term vectors pairs produced and discards any infrequent terms.
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A particular city has area of 1300 square miles which is covered by the cellular system using the seven cell reuse pattern. Every cell has a radius of the 4 miles and city has 40 MHz spectrum having a full duplex channel bandwidth of 60KHz. Find:
Provide a brief introduction of the term WiMAX Technology?
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