Searching for "Hierarchical"

Q:

Which work of art uses hierarchical scale?

A) painting B) sculpture
C) both a & b D) none
 
Answer & Explanation Answer: C) both a & b

Explanation:

Hierarchical scale is used in both painting and sculpture works of arts.

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Q:

Decomposing tasks into smaller activities can be helpful in reducing the amount of stress associated with overwhelmingly large milestones. What is a feature of the hierarchical nature of the WBS? 

A) A WBS hierarchy prevents duplication B) A WBS cab be rolled up or collapsed to provide information at the appropriate level for a particular audience.
C) The decomposition of tasks provides a detailed planning tool D) The depth of a WBS is restricted to three levels, which avoids overplanning
 
Answer & Explanation Answer: B) A WBS cab be rolled up or collapsed to provide information at the appropriate level for a particular audience.

Explanation:

Answer A is incorrect because the WBS hierarchy does not prevent duplication by itself. Answer C is incorrect because a WBS is focused on deliverables and components or work packages and not on tasks. Answer D is incorrect because a WBS can be sized appropriately to the project size with as many levels as necessary.

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Q:

What is the difference between agglomerative and divisive Hierarchical Clustering?

Answer

- Agglomerative Hierarchical clustering method allows the clusters to be read from bottom to top and it follows this approach so that the program always reads from the sub-component first then moves to the parent. Whereas, divisive uses top-bottom approach in which the parent is visited first then the child. 


- Agglomerative hierarchical method consists of objects in which each object creates its own clusters and these clusters are grouped together to create a large cluster. It defines a process of merging that carries on till all the single clusters are merged together into a complete big cluster that will consists of all the objects of child clusters. Whereas, in divisive the parent cluster is divided into smaller cluster and it keeps on dividing till each cluster has a single object to represent.

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