E20-065 試験問題を無料オンラインアクセス

What do first-order and second-order Markov processes have in common concerning next word prediction?

• A.Both are unsupervised methods
• B.Both provide the foundation to build a trigram language model
• C.Both use WordNet to model the probability of the next word
• D.Neither makes assumptions about the probability of the next word

You conduct a TFIDF analysis on 3 documents containing raw text and derive TFIDF ("data", document y) = 1.908. You know that the term "data" only appears in document 2.
What is the TF of "data" in document 2?

• A.4 based on the following reasoning: TFIDF = TF1DF = 1.908 You then know that IDF will equal LOG (3/1 )=0.477 Therefore, TFIDF=TF'0 477 = 1.908 TF will then round to 4
• B.2 based on the following reasoning: TFIDF = TF1DF = 1 908 You then know that IDF will equal LOG (32)=0.954 Therefore, TFIDF=TF*0.954 = 1.908 TF will then round to 2
• C.6 based on the following reasoning: TFIDF = TF1DF = 1.908 You then know that IDF will equal 3/1=3 Therefore, TFIDF=TF/3 = 1.908 TF will then round to 6
• D.11 based on the following reasoning: TFIDF = TF1DF = 1908 You then know that IDF will equal LOG(3/2)=0.176 Therefore, TFIDF=TF"0.176 = 1.908 TF will then round to 11

What is the most likely reason for an HBase table to contain millions of columns?

• A.There are thousands of columns families
• B.Data is imported from a relational database table
• C.Data is stored in the column qualifier
• D.The column names are randomly generated

What is a random subspace of features, as used by Random Forests?

• A.Filtration of data that does not meet a pre-defined weighting thrsehold
• B.The creation of out-of-bag (OOB) data that is used to select features
• C.A random subset of features that are chosen at each split in the decision tree
• D.Removal of highly correlated variables to randomize the features

What advantage does replication provide while storing a file in HDFS?

• A.Memory optimization and minimizing tasks to run
• B.Elimination of requirement for Shuffle and Sort process
• C.Data protection and scheduling flexibility
• D.Elimination of requirement for a combiner process