0
votes
1answer
42 views

How to Calculate silhouette coefficient in SPSS for clustered data set?

I am having a pre clustered dataset with data and the action cluster identified for it using a custom clustering method. I am looking to calculate silhouette coefficient on this clustered dataset ...
0
votes
0answers
36 views

How is predictor importance in a cluster analysis (in SPSS) affected by dichotomy and multicollinearity?

I want to use a cluster analysis (CA) in SPSS to define different profiles in my dataset. I am using different continuous variables for this, including several neuropsychiatric measures. I am new in ...
0
votes
0answers
50 views

I find very different results using a k-means or two-step clustering method. How is this?

I want to use a cluster analysis (CA) in SPSS to define different profiles in my dataset. I am using different continuous variables for this, including several neuropsychiatric measures. I am new in ...
1
vote
2answers
100 views

Segmentation using cluster analysis in SPSS

I am doing a segmentation project and am struggling with cluster analysis in spss right now. Could you please help me get this answered: How do I determine the quality of the clustering in spss? In ...
1
vote
1answer
81 views

Finding groups of similar people

After asking 16 questions (yes or no) to 75 people I have a table of their answers coded like 00110011110101010 ('0'=no and '1'=yes). Now I would like to find ...
1
vote
0answers
68 views

Relative Variable Importance in Clustering

In SPSS, the user can check the relative variable importance in a clustering result and produce a graph like the following: link: ...
1
vote
0answers
63 views

Difference between BIRCH and Two-Step Clustering

I don't have SPSS. But judging from the documentation you can find on the internet, SPSS "Two-Step Clustering" seems to be closely related to BIRCH clustering: Zhang, T., Ramakrishnan, R., & ...
1
vote
1answer
356 views

What data structure to use for my cluster analysis or what cluster analysis to use for my data?

I have a large dataset of categorical variables. The data consists of shoppers who purchased two items during a single trip to a store. There are approximately 75,000 cases and 1,500 different ...
1
vote
2answers
151 views

Cluster analysis, what to do with different scales?

I want to identify different groups of respondents out of up to five variables of the European Values Study 2008. At first I took 4 questions for cluster analysis all on a scale from 1 to 10. ...
2
votes
2answers
259 views

Weighting variables in two-step cluster analysis

I'm using SPSS to perform two-step cluster analyses. SPSS shows predictor importance of each variable used in an analysis. Oftentimes, a binary variable like gender (sorry, I'm just keeping it ...
1
vote
1answer
548 views

Cluster analysis on ordinal data

I'd like to perform a cluster analysis on ordinal data (Likert scale) by using SPSS. I have around 140 observations and 20 variables that are scaled from 1 to 5 (1: I strongly agree, 3: neutral, 5: I ...
1
vote
0answers
160 views

Evaluating clusters of variables produced by varclus & hclustvar

Background - I want to cluster analyze a mixed dataset, clustering the variables on the basis of correlational similarity. SPSS gives me this option, but doesn't allow me to evaluate the clustering ...
1
vote
3answers
411 views

How to cluster time series?

I have a question about cluster analysis. There are 3000 companies, which have to be clustered according to their power usage over 5 years. Each company has values for every hour during 5 years. I ...
1
vote
1answer
209 views

Using mixed variables in two-step cluster analysis

I need to perform cluster analysis on my data set which includes both continuous and categorical type of variables. Having read around, I think K-Means is not a suitable technique for mixed data. Can ...
2
votes
1answer
461 views

Does SPSS rescale dendrograms?

A colleague and I have been clustering some data in SPSS (v19) and R (2.15), respectively. Using the same distance metric and agglomeration method, we get identical merge orders/agglomeration ...
1
vote
1answer
289 views

Clustering time series

I want to create forecasting for a large quantity of time series. Since they are too many, I am thinking on reducing my data by clustering it into to similar groups. However, I am using SPSS modeler ...
2
votes
0answers
426 views

How to cluster standard errors (by country) using SPSS?

I'm trying to obtain robust standard errors as my regression residuals seem to be correlated... My sample data has 8 countries and I would like to cluster the standard errors by these 8 countries ...
1
vote
1answer
605 views

Clustering of time series

I have a set of almost 1600 time series on 2 years which I want to group into clusters. Do you think this is possible using k-means? Which method do you advice me to use? Is this possible at all using ...
1
vote
2answers
605 views

Can I use log-likelihood distance on data of only continuous variables?

I have to run a SPSS two-step cluster analysis. All my 4 variables are continuous scalar standardized parameters (with normal distribution). The dataset includes 10,000 cases. SPSS suggest to use ...
1
vote
2answers
487 views

Interpreting average linkage clustering results in SPSS

I am trying to cluster 6 PC scores for a 1600 cases data (so its a 1600 x 6 matrix). I am using average linkage clustering technique that would be followed by a K mean clustering. The purpose of ...
2
votes
1answer
1k views

How can I compare Likert scale data of two clusters in SPSS?

In SPSS, I want to compare two clusters of management sciences department faculty members in two universities. Which test should I use? Can you explain how to do it in SPSS?
6
votes
1answer
481 views

Derivation of distance in two-step clustering

I am working with the two step cluster process in SPSS Modeler (Clementine) and trying to get a sense for the distance function used. It is a log-likelihood function (as stated in docs) but I am ...