A key of type                         is generated which is used later to join ngrams with their heads and tails in the reducer phase.

Related MCQs

•                           to produce NGrams of the desired length.
• unique ngrams or ngram fragments across multiple documents.
• An                           consists of a search-key value and pointers to one or more records with that value as their search-key value.
• In a                 clustering index, the index record contains the search-key value and a pointer to the first data record with that search- key value and the rest of the records will be in the sequential pointers.
• A search key containing more than one attribute is referred to as a                     search key.
• In a single table (with 10 columns) join query the number of values needed to examine per column is                      
• FROM tbl_1 INNER JOIN tbl_2 WHERE tbl_1.i1 = tbl_2.i2;
• A                     is a decision support tool that uses a tree-like graph or model of decisions and their possible consequences, including chance event outcomes, resource costs, and utility.
• In ordered indices the file containing the records is sequentially ordered, a                         is an index whose search key also defines the sequential order of the file.
• Indices whose search key specifies an order different from the sequential order of the file are called                        indices.