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NEW QUESTION: 1
A technician notices that a computer is making a loud clicking noise but continues to run. System speed is barely affected, but they cannot access certain drives. These are the symptoms of which of the following?
A. Failing system hard drive
B. Failing second hard drive
C. Bad CPU fan
D. Bad CMOS chip
Answer: B
NEW QUESTION: 2
Which statement is correct about service chaining?
A. All hosts must be in the same network subnet.
B. The right service interface is always the ingress for traffic.
C. All traffic entering the left interface must exit the right interface.
D. Service chaining is always Layer 2 based.
Answer: B
NEW QUESTION: 3
CORRECT TEXT
Problem Scenario 50 : You have been given below code snippet (calculating an average score}, with intermediate output.
type ScoreCollector = (Int, Double)
type PersonScores = (String, (Int, Double))
val initialScores = Array(("Fred", 88.0), ("Fred", 95.0), ("Fred", 91.0), ("Wilma", 93.0),
("Wilma", 95.0), ("Wilma", 98.0))
val wilmaAndFredScores = sc.parallelize(initialScores).cache()
val scores = wilmaAndFredScores.combineByKey(createScoreCombiner, scoreCombiner, scoreMerger) val averagingFunction = (personScore: PersonScores) => { val (name, (numberScores, totalScore)) = personScore (name, totalScore / numberScores)
}
val averageScores = scores.collectAsMap(}.map(averagingFunction)
Expected output: averageScores: scala.collection.Map[String,Double] = Map(Fred ->
91.33333333333333, Wilma -> 95.33333333333333)
Define all three required function , which are input for combineByKey method, e.g.
(createScoreCombiner, scoreCombiner, scoreMerger). And help us producing required results.
Answer:
Explanation:
See the explanation for Step by Step Solution and configuration.
Explanation:
Solution :
val createScoreCombiner = (score: Double) => (1, score)
val scoreCombiner = (collector: ScoreCollector, score: Double) => {
val (numberScores. totalScore) = collector (numberScores + 1, totalScore + score)
}
val scoreMerger= (collector-!: ScoreCollector, collector2: ScoreCollector) => { val
(numScoresl. totalScorel) = collector! val (numScores2, tota!Score2) = collector
(numScoresl + numScores2, totalScorel + totalScore2)
}
NEW QUESTION: 4
You are performing a filter based feature selection for a dataset 10 build a multi class classifies by using Azure Machine Learning Studio.
The dataset contains categorical features that are highly correlated to the output label column.
You need to select the appropriate feature scoring statistical method to identify the key predictors. Which method should you use?
A. Spearman correlation
B. Chi-squared
C. Kendall correlation
D. Person correlation
Answer: B
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Feedbacks
Aalk - 2014-05-05 16:45:18
Plato - 2014-05-05 16:45:51
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