Suppose that the data mining task is to cluster points (with (x, y) representing location) into three clusters, where the points
are A1(4, 8), A2(2, 4), A3(1, 7), B1(5, 4), B2(5, 7), B3(6, 6), C1(3, 7), C2(7, 8). The distance function is Euclidean distance. Suppose initially we assign A1, B1, and C1as the center of each cluster, respectively. Please use the k-means algorithmand show your R code.(a)the three cluster centers after the first round of execution. (b)the final points in the three clusters after the algorithm stops.
1 answer:
Answer:
Explanation:
K- is the working procedure:
It takes n no. of predefined cluster as input and data points.
It also randomly initiate n centers of the clusters.
In this case the initial centers are given.
Steps you can follow
Step 1. Find distance of each data points from each centers.
Step 2. Assign each data point to the cluster with whose center is nearest to this data point.
Step 3. After assigning all data points calculate center of the cluster by taking mean of data points in cluster.
repeat above steps until the center in previous iteration and next iteration become same.
A1(4,8), A2(2, 4), A3(1, 7), B1(5, 4), B2(5,7), B3(6, 6), C1(3, 7), C2(7,8)
Centers are X1=A1, X2=B1, X3=C1
A1 will be assigned to cluster1, B1 will be assigned to cluster2 ,C1 will be assigned to cluster3.
Go through the attachment for the solution.
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Answer:
Move to the breakpoint at "Get Customer Details" stage.
Explanation:
This question is incomplete, we need a diagram and four options to resolve this questions, I attached the diagram and the options.
- The process will work all stages in the "Access Customer Account" page until the error is thrown and then focus would move to the breakpoint at "Get Customer Details" stage.
- The process will work all stages in the "Access Customer Account" page until the error is thrown and then focus would move to the "Recover1" stage.
- The process will work all stages in the "Access Customer Account" page until the error is thrown and then focus would move to the stage containing the error on the "Access Customer Account" page.
- The process will work all stages in the "Access Customer Account" page until the error is thrown and then focus would move to the "Exception1" stage.
In this case, we are going to run an extra from subpage testing in <u>Process studio</u>. Process studio is a tool where we can test these processes.
The process always it's going to work all stages in the "Access Customer Account" we're going to receive an interruption when the error is activated, moving the focus to the Get Customer Details stage.
There is an error in the stage Access Customer Account, if we run the processes with the Go button, the focus should move into the Recover1 stage, and should show the error.
But in this particular example, we must use the STEP OUT BUTTON, What means this?
The process it's going be executed, but won't show any error or message, because we have used the STEP OUT BUTTON.
If we use the STEP OUT BUTTON, the process should end but in this case, we have a breakpoint in Get Customer Details stage, for that the focus and the process will end in Get Customer Details stage and not at the end or at the Recover1 stage.
