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| Prefix | Namespace IRI |
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| rdfs | http://www.w3.org/2000/01/rdf-schema# |
| rdf | http://www.w3.org/1999/02/22-rdf-syntax-ns# |
| xsdh | http://www.w3.org/2001/XMLSchema# |
| dbpedia | http://dbpedia.org/resource/ |
- Subject Item
- dbpedia:MapReduce
- rdfs:comment
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MapReduce is a programming model and an associated implementation for processing and generating large data sets with a parallel, distributed algorithm on a cluster.Conceptually similar approaches have been very well known since 1995 with the Message Passing Interface standard having reduce and scatter operations.A MapReduce program is composed of a Map() procedure(method) that performs filtering and sorting (such as sorting students by first name into queues, one queue for each name) and a Reduce() method that performs a summary operation (such as counting the number of students in each queue, yielding name frequencies).