All Questions
Tagged with sas clustering
18
questions
0
votes
0
answers
62
views
Variable Clustering (varclus) R-squared from SAS in R
I am using the varclus function from the Hmisc package in R. Are there ways to produce summary tables from varclus like those in ...
- 1
0
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1
answer
230
views
1
vote
1
answer
93
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importance of correlation between data for a PROC CLUSTER
i'm working on a clustering analysis on SAS.
I need to improve an actual code :
...
- 438
0
votes
1
answer
146
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Type of transformation needed for Clustering in SAS E-Miner
I'm performing a cluster analysis with a dateset that contain over 100 varibles (after imputing, replacing and eliminating correlated vars ..)
Before hiting the clustering, for the transformation ...
- 33
0
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0
answers
94
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"Uniform" Clustering
I have the data $\{(y_i,\omega_i), i=1,\dots,n\}$, where $y_i \in \mathbb{R}_+$ the response and $\omega_i>0$ a weight.
Fixed $K>0$ I want to determinate $y_1^*,\dots,y_{K-1}^*$ such that
$$
\...
- 121
2
votes
1
answer
40
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How do I choose the appropriate numbers of customers to be considered for cluster analysis?
I am currently doing a customer segmentation project in SAS.
I have identified 2700 customers who are have made a purchase in each of the 4 years I am analysing. For the cluster analysis the more ...
- 143
1
vote
1
answer
944
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good practice for cluster analysis [closed]
I want to find out what are the best practice in conducting a reliable cluster analysis:
Outliers: Is it necessary or not to remove the outliers in the variables to be used for cluster analysis?
...
- 519
0
votes
1
answer
2k
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Interpreting Cluster Analysis from SAS Enterprise Miner
I am currently doing a text mining project and I conducted a clustering analysis in SAS enterprise miner.
I am using the following settings:
Anyway, The results look like this, showing me different ...
- 31
2
votes
2
answers
4k
views
What is second eigenvalue?
I am trying to understand Proc Varclus. This page says
"2.If the second eigenvalue for the cluster is greater than the specified cutoff, then the inital cluster is split into two clusters."
What is ...
- 116
1
vote
2
answers
300
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Does clustering need scalar data?
I am trying to cluster 43,000 individuals on about 50 variables. The data contained in the variables are minutes of a radio shows which people listened to in the range of 0 - 3,000,000 minutes. My ...
- 385
1
vote
0
answers
982
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Strategy for finding cluster solution with positive values for Cubic Clustering Criterion
I am trying to cluster a data set with approximately 3500 entries, consisting primarily of likert-10 scale survey answers. Most of the survey answers are skewed - a typical example is below:
I've ...
- 111
3
votes
2
answers
2k
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I've been trying to wrap my head around the use of eigenvalues in cluster analysis. What does it tell me about my clustering behavior?
In a typical hierarchical cluster output from using SAS, the first table given lists all of the eigenvalues.
From what I understand, eigenvalues are derived from covariance between the variables. ...
- 2,123
2
votes
1
answer
2k
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Calculating distances in SAS PROC CLUSTER method=centroid
I'm trying to understand the calculations behind the centroid method of cluster analysis in SAS's PROC CLUSTER. I am able to calculate the reported distances at ...
- 504
5
votes
2
answers
797
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Grouping similar subjects based on slopes
I am studying the responses of 500 subjects to temperature increase using a linear regression on each degree of temperature (from 10°C to 28°C). Thus, it was possible for me to compute the intercept ...
- 51
0
votes
3
answers
6k
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Clustering mixed variables in SAS
I have following variables in my dataset:
Working hours (numerical:ordinal)
Effectiveness (categorical:ordinal ; 4 values-> (poor,average,good,best))
Satisfaction (categorical:ordinal ; 4 values-> (...
