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Hadoop
Advanced Hadoop
Quiz 1
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Q.1
Mahout provides ____________ libraries for common and primitive Java collections.
a) Java
b) Javascript
c) Perl
d) Python
Q.2
Point out the correct statement.
a) Mahout is distributed under a commercially friendly Apache Software license
b) Mahout is a library of scalable machine-learning algorithms, implemented on top of Apache Hadoop® and using the MapReduce paradigm
c) Apache Mahout is a project of the Apache Software Foundation to produce free implementations of distributed or otherwise scalable machine learning algorithms
d) None of the mentioned
Q.3
_________ does not restrict contributions to Hadoop based implementations.
a) Mahout
b) Oozie
c) Impala
d) All of the mentioned
Q.4
Mahout provides an implementation of a ______________ identification algorithm which scores collocations using log-likelihood ratio.
a) collocation
b) compaction
c) collection
d) none of the mentioned
Q.5
Point out the wrong statement.
a) ‘Taste’ collaborative-filtering recommender component of Mahout was originally a separate project and can run standalone without Hadoop
b) Integration of Mahout with initiatives such as the Pregel-like Giraph are actively under discussion
c) Calculating the LLR is very straightforward
d) None of the mentioned
Q.6
The tokens are passed through a Lucene ____________ to produce NGrams of the desired length.
a) ShngleFil
b) ShingleFilter
c) SingleFilter
d) Collfilter
Q.7
The _________ collocation identifier is integrated into the process that is used to create vectors from sequence files of text keys and values.
a) lbr
b) lcr
c) llr
d) lar
Q.8
____________ generates NGrams and counts frequencies for ngrams, head and tail subgrams.
a) CollocationDriver
b) CollocDriver
c) CarDriver
d) All of the mentioned
Q.9
A key of type ___________ is generated which is used later to join ngrams with their heads and tails in the reducer phase.
a) GramKey
b) Primary
c) Secondary
d) None of the mentioned
Q.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
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