Explanation:The GramKey is a composite key made up of a string n-gram fragment as the primary key and a secondary key used for grouping and sorting in the reduce phase. 10. ________ phase merges the counts for unique ngrams or ngram fragments across multiple documents.
A. CollocCombiner
B. CollocReducer
C. CollocMerger
D. None of the mentioned
Answer:A
Explanation:The GramKey is a composite key made up of a string n-gram fragment as the primary key and a secondary key used for grouping and sorting in the reduce phase. 10. ________ phase merges the counts for unique ngrams or ngram fragments across multiple documents.
A. CollocCombiner B. CollocReducer C. CollocMerger D. None of the mentioned
Explanation:The combiner treats the entire GramKey as the key and as such, identical tuples from separate documents are passed into a single call to the combiner’s reduce method, their frequencies are summed and a single tuple is passed out via the collector. Sanfoundry Global Education & Learning Series – Hadoop.