题目
MISM2510.13156.202610 Practice Final For Office Hours
数值题
What is the Euclidean distance of the clusters in this drawing using single linkage? Round to the nearest whole number.
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标准答案
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思路分析
We need the Euclidean distance between clusters under single linkage, which uses the minimum distance between any pair of points where one point is from each cluster.
First, identify the points in each cluster from the drawing:
- Blue cluster (left): points at rou......Login to view full explanation登录即可查看完整答案
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类似问题
This is a dissimilarity matrix that shows how far away each observation is from each other observation. As a reminder: this says that observations 1 and 2 are .15 away from each other. Using the agglomerative (hierarchical) method of creating clusters, if we use complete linkage, what is the first cluster of two observations to form? [选择] Observations 1 and 4 Observations 2 and 3 Observations 1 and 3 Observations 3 and 4 Observations 2 and 4 Observations 1 and 2 Using the agglomerative (hierarchical) method of creating clusters, if we use single linkage, what is the first cluster of two observations to form? [选择] Observations 2 and 3 Observations 1 and 4 Observations 1 and 3 Observations 3 and 4 Observations 1 and 2 Observations 2 and 4 .15 .4 .5 .15 .3 .55 .4 .3 .2 .5 .55 .2
This is a dissimilarity matrix that shows how far away each observation is from each other observation. As a reminder: this says that observations 1 and 2 are .15 away from each other. Using the agglomerative (hierarchical) method of creating clusters, eventually we reach a state in which there are only two clusters that remain (meaning there is either one cluster with three observations in it and one cluster with one observation in it, or there are two clusters of two observations). Using complete linkage, those two clusters are [选择] .55 .4 .2 .3 .5 .15 away from each other. Using the agglomerative (hierarchical) method of creating clusters, eventually we reach a state in which there are only two clusters that remain (meaning there is either one cluster with three observations in it and one cluster with one observation in it, or there are two clusters of two observations). Using single linkage those two clusters are [选择] .3 .4 .55 .5 .15 .2 away from each other. .15 .4 .5 .15 .3 .55 .4 .3 .2 .5 .55 .2
The table below shows how far each observation is from each other observation. It shows us that observation A is 1 away from Observation B, and that Observation C is 5 away from Observation D. Assume observations A and B are in a cluster and observations C and D are in a different cluster. If we use complete linkage how far is the cluster of A and B from the cluster of C and D? Observation A Observation B Observation C Observation D Observation A 1 6 3.5 Observation B 1 5.5 7 Observation C 6 5.5 5 Observation D 3.5 7 5
In a hierarchical clustering dendrogram, what does the y-value of the link between two clusters represent?
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