Here's a fun pet project I've been working on: udreamed.com/. It is a dream analytics app. Here is the TH-cam channel where we post a new video almost three times per week: th-cam.com/channels/iujxblFduQz8V4xHjMzyzQ.html Also available on iOS: apps.apple.com/us/app/udreamed/id1054428074 And Android: play.google.com/store/apps/details?id=com.unconsciouscognitioninc.unconsciouscognition&hl=en Check it out! Thanks!
I know this is out of context but I like the way you say 'burgers'. Yeah yeah I am well aware this has nothing to do with what you've explained in the video but, yeah.
Professor, Can i do Hierarchial cluster analysis, using 4 individual Likert items (each measured on a 5 point scale). These 4 items assess attitude of respondent, and they constitute a single latent variable, in my study.
You can use those variables in this way. It should produce meaningful results. The clusters it forms would be an indication of the mutually-held attitudes of groups of respondents.
Dear Researcher, kindly guide, how can i cluster the questionnaire line items of the large data set. like more than1000 observation? I have 79 final line items of questionnaire now i want to cluster the line items into distinct latent variable. kindly guide me how can i cluster the line items. thanks in anticipation.
If you mean you want to cluster the variables, you should use factor analysis instead. The most common approach is principle components analysis. Here is a video: th-cam.com/video/VBsuEBsO3U8/w-d-xo.html
For clustering genetic data, I would recommend sequencing software, such as Clustal (or something newer). I used ClustalXY and MEGA during my doctorate. MEGA was really good at producing dendrograms (clustered inheritance trees)
I actually tried this in our computer, but for some reason, the output only includes those proximities to dendrograms. And how did you classify the results by restaurants? It doesnt appear in my output
Hi James, great video as always. Using your example, what if i have three replicates data for each variable of each type of burger? It seems that spss can not facilitate this particular case. Should i use the average value instead? Looking forward to hear your response.
Hello Dr James Thanks for the video. I would like to inform you that mostly high impact factor journal prefer ward method and the main concern of cluster analysis is number of cluster. So,it is not a good practice to pre determine the number of cluster,it shows manipulate the number of cluster. SAS program offer cubic cluster technique which allow to know how many cluster the data can draw. Regards Tayeen
Hi Dr.James, I wonder whether you have an idea for my problem. I am now doing cluster analysis on categorical data which are socio-demographic data by using SPSS. However, I have no idea which approaches the most appropriate for my case is, whether k means or two step. I know already that hierarchical doesnt fit my data since my data contains around 500 cases. Do you have an idea for my case? thank you in advance
Hi Dr James, can you please explain what's the data about? I mean, contextualize the case of study or tell where to find that information, please 🙏 greetings from Peru
Hello James - thank you for posting your very helpful videos on cluster analysis. I wondered if you could point me in the direction of information that will help me to justify my choice of 2-step cluster analysis over Ward's method. I have tried both approaches and really like the output from 2-step ... but dont think that will be sufficient justification for my PhD thesis 😀 Many thanks.
Hi Dr. James, thanks a lot for the video! I would like to ask something. During the screen plot, you said that these data did not seem to cluster very well due to the schema they get. That it means that you can not cluster such data? If the schema of the screen blot is like that, we should no continue with a cluster analysis? Thank a lot if you answer!!
They don't form a few informative clusters, but instead seem to cluster into their own silo. In this case, the data is not very good for clustering with the hierarchical approach.
Thank you James. This was really helpful. I am a Psychogramm student from Germany. Is it possible to get your SPSS data set? It would be great if I could show this in class. Sincerely Dominik :)
The burgers data is available on the homepage of statwiki: statwiki.kolobkreations.com/index.php?title=Main_Page Just search on the page for the word "burger".
I didn't. If you wanted to though, you could run this analysis separately for each restaurant. Or you could do a two-step and use restaurant as an outcome variable (doesn't use it to classify, but does show you the trend in restaurant based on cluster). Here is a video for something like that: th-cam.com/video/DpucueFsigA/w-d-xo.html
![Hierarchical Cluster Analysis [Simply explained]](http://i.ytimg.com/vi/8QCBl-xdeZI/mqdefault.jpg)
Here's a fun pet project I've been working on: udreamed.com/. It is a dream analytics app. Here is the TH-cam channel where we post a new video almost three times per week: th-cam.com/channels/iujxblFduQz8V4xHjMzyzQ.html
Also available on iOS: apps.apple.com/us/app/udreamed/id1054428074
And Android: play.google.com/store/apps/details?id=com.unconsciouscognitioninc.unconsciouscognition&hl=en
Check it out! Thanks!
I know you posted this ages ago, but just want to say thanks (from one teacher to another) this is really nice and clear!
Working on my dissertation right now, this is incredibly helpful man! Thank you.
A well made tutorial with hands-on info.
thank you verrryyy much. this video help me so much. have a good day!
Thank you. It contains information which I was missing. Thank you.
I know this is out of context but I like the way you say 'burgers'. Yeah yeah I am well aware this has nothing to do with what you've explained in the video but, yeah.
lol
Professor, Can i do Hierarchial cluster analysis, using 4 individual Likert items (each measured on a 5 point scale). These 4 items assess attitude of respondent, and they constitute a single latent variable, in my study.
You can use those variables in this way. It should produce meaningful results. The clusters it forms would be an indication of the mutually-held attitudes of groups of respondents.
Dear Researcher, kindly guide, how can i cluster the questionnaire line items of the large data set. like more than1000 observation?
I have 79 final line items of questionnaire now i want to cluster the line items into distinct latent variable. kindly guide me how can i cluster the line items. thanks in anticipation.
If you mean you want to cluster the variables, you should use factor analysis instead. The most common approach is principle components analysis. Here is a video: th-cam.com/video/VBsuEBsO3U8/w-d-xo.html
Thanks for the video James, can you tell, which option did you select to get agglomeration schedule coefficient graph, I am unable to display that.
It's at 2:22 after clicking on the Statistics button. There is a checkbox for the agglomeration schedule.
Nice video James! The scree plot, however, was indicating 3 clusters (not 22). The right-most part corresponds to one cluster.
Good catch!
Thank you for video. I have a question i want to standardize to 0 to 1 (not -1 to 1). Can I do that and is it wrong? (4:03)
You can do that. There are several options for standardizing, including 0-1.
Where can I find the data? the one that he used in the video
There is a link in the video description.
how can I measure or quantify the difference between two clusters? using disctances between them may be?
Yes. The X-axis distance represents the difference between two factors.
Thank you for video I have a question . how can I create cluster with 0 -1 genetic data (zero -one)?
For clustering genetic data, I would recommend sequencing software, such as Clustal (or something newer). I used ClustalXY and MEGA during my doctorate. MEGA was really good at producing dendrograms (clustered inheritance trees)
@@Gaskination Thank you dr.James
I actually tried this in our computer, but for some reason, the output only includes those proximities to dendrograms. And how did you classify the results by restaurants? It doesnt appear in my output
I'm sorry it doesn't appear for you. As for how I did it, the video shows every step better than I could explain it in text. Best of luck to you!
+James Gaskin Still, I managed to understand your lecture and I thank you for it. The error might be on my part Ill just check it. Again, I thank you!
Hi James, great video as always. Using your example, what if i have three replicates data for each variable of each type of burger? It seems that spss can not facilitate this particular case. Should i use the average value instead? Looking forward to hear your response.
Yes, using the average, or a proxy (choosing one that best represents the three) would be best.
@@Gaskination Thanks a lot!
Hello Dr James
Thanks for the video. I would like to inform you that mostly high impact factor journal prefer ward method and the main concern of cluster analysis is number of cluster. So,it is not a good practice to pre determine the number of cluster,it shows manipulate the number of cluster. SAS program offer cubic cluster technique which allow to know how many cluster the data can draw.
Regards
Tayeen
Tayeenul Hoque Thanks for the feedback! I'm still learning :)
Thank you so much it will be a great help for me
Hi Dr.James, I wonder whether you have an idea for my problem. I am now doing cluster analysis on categorical data which are socio-demographic data by using SPSS. However, I have no idea which approaches the most appropriate for my case is, whether k means or two step. I know already that hierarchical doesnt fit my data since my data contains around 500 cases. Do you have an idea for my case? thank you in advance
Two step is a safe choice. Categorical is a little tricky since it will split them very strongly based upon category.
Hi Dr James, can you please explain what's the data about? I mean, contextualize the case of study or tell where to find that information, please 🙏 greetings from Peru
The data is about fast-food nutrition information.
Thank you James
Hello James - thank you for posting your very helpful videos on cluster analysis. I wondered if you could point me in the direction of information that will help me to justify my choice of 2-step cluster analysis over Ward's method. I have tried both approaches and really like the output from 2-step ... but dont think that will be sufficient justification for my PhD thesis 😀 Many thanks.
Try this: www.sciencedirect.com/science/article/pii/S0169023X07000031?casa_token=8YU5M2RivqsAAAAA:5g8D6xmHTSKJYGmEnVTAmkUTkWnaoeIRLzYT5pBjc2JFMFUKB6FvbxYZSLv6tTQZeXIp0GsfOA
Thank you very much this video was very helpful
how do you spell closto and the other one? I can´t find them
I don't think I understand the question. Do you mean Hierarchical and Dendrogram and K-means?
Hi Dr. James, thanks a lot for the video! I would like to ask something. During the screen plot, you said that these data did not seem to cluster very well due to the schema they get. That it means that you can not cluster such data? If the schema of the screen blot is like that, we should no continue with a cluster analysis? Thank a lot if you answer!!
They don't form a few informative clusters, but instead seem to cluster into their own silo. In this case, the data is not very good for clustering with the hierarchical approach.
@@Gaskination thank you so much for your answer!!
Hi Dr. James.
Can you tell more about your dataset? Which year was it collected?
I gathered the data from an online source in 2015. I'm not sure how current it was.
bestest video.
😮😮
Thank you James. This was really helpful.
I am a Psychogramm student from Germany. Is it possible to get your SPSS data set? It would be great if I could show this in class. Sincerely Dominik :)
The burgers data is available on the homepage of statwiki: statwiki.kolobkreations.com/index.php?title=Main_Page
Just search on the page for the word "burger".
@@Gaskination Thank you so much!
Thanks. It helps a lot. Cheers!!!
Great video.
Hi James Gaskin, how did you classify the results by restaurants?
I didn't. If you wanted to though, you could run this analysis separately for each restaurant. Or you could do a two-step and use restaurant as an outcome variable (doesn't use it to classify, but does show you the trend in restaurant based on cluster). Here is a video for something like that: th-cam.com/video/DpucueFsigA/w-d-xo.html
@@Gaskination How can I run my analysis for each restaurant seperately?
@@eminkazdaloglu7404 Go to Data and then Split File. Then organize output by restaurant.
@@Gaskination Thank you so much!
hi, what software are u using to create this video? i love to do this for my class, thanks
I use screencast-o-matic. It's great, and free (or inexpensive for the pro version)
Thank you, this video was really helpful!
Thanks
hi to all Rennes School of business students ;) good luck for this Marketing analytics exam
thanks, now i'm hungry