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Quiz

Segmentation Machine Learning

Angel Intriago 10 Fragen

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Fragen in diesem Quiz (10)

  1. 1Cluster is the only technique you can use to Segment
    1. ATRUE
    2. BFALSE
    3. CNO ANSWER
  2. 2Which one is correct regarding the cluster algorithms we have seen?
    1. ANo Answer
    2. BK-means algorithm allows the inclusion of categorical variables without transformation
    3. CSilhouette final statistic is the average of every observation's Silhouette
    4. DYou can select the measure of distance in K-means
    5. ETWO-STEP Cluster (interactive in Dataiku DSS) is purely a mathematical algorithm
  3. 3We may use a gender variable coded M/F as clustering variable in a K-MEANS
    1. ATRUE
    2. BFALSE
    3. CNO ANSWER
  4. 4One of the outputs available in Dataiku DSS in a Segmentation analysis is a Heat Map that shows variable importance for each segment
    1. ATRUE
    2. BFALSE
    3. CNO ANSWER
  5. 5SILHOUETTE is the most important validation criterion on a Segmentation
    1. AFALSE
    2. BTRUE
    3. CNO ANSWER
  6. 6Regarding variables that take part in any stage of the segmentation project:
    1. ANo Answer
    2. BYou may use profiling variables to describe groups once they are found
    3. CThere is no need to differentiate beforehand clustering and profiling variables
    4. DClustering variables are not the only ones that enter into the algorithm
    5. EProfiling variables are entered in the segmentation algorithm
  7. 7General statements
    1. AAt least two differences between Segmentation and Classification are 1. one is unsupervised, the other one supervised and 2. In Classification we don´t find groups
    2. BNo Answer
    3. CHeat map in Dataiku DSS shows which observations belong to which clusters
    4. DIf Silhouette statistic is between 0,5 and 1 we can confirm the segmentation solution is a definitive one
    5. ESegmentation is very much an inference technique: from the sample used we use statistics to infer results to a population
  8. 8Regarding the checking list before running a Segmentation:
    1. ADimension reduction is something mandatory when variables are expressed in different units
    2. BThe idea behind variable re-scaling is to remove the effects of diferent variable scales in segmentation
    3. CThere should not be any correlation whatsoever between the variables entered into the segmentation algorithm
    4. DThe idea behind dimension reduction is to remove the effects of variable units in segmentation
    5. ENo Answer
  9. 9Using cosine as distance measure produces same groups as Euclidean distance since both are mathematical calculations
    1. ANO ANSWER
    2. BTRUE
    3. CFALSE
  10. 10If we obtain several small clusters (less than 5% of total sample size), it is normally recommendable to merge them
    1. ANO ANSWER
    2. BTRUE
    3. CFALSE

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Beschreibung
Informática Quiz am Segmentation Machine Learning, erstellt von Angel Intriago am 12/12/2021.
Sprache
English
Aufrufe
3
Schlagwörter
informática
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