All Questions
5 questions
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votes
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39
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Appropriate technique for grouping objects with multiple ratings each?
I've got a questionnaire in which I'm asking participants to rate 17 countries on eight different rating scales each (scale 1-7). I'm now interested in finding out which countries are similar to each ...
0
votes
0
answers
29
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In NLP what does it mean when text data is clustered? What does each cluster represent?
I am reading about NLP and text analysis and am studying clustering of text data. I have a large csv file that is a collection of online responses.
I am first converting each response to a TFIDF ...
- 175
2
votes
1
answer
1k
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How does Principal Component Analysis help me understand my data?
I have a dataset which contains 10000 examples. Each example has 100 dimensions. These dimensions have the same scale.
I clustered all examples using their 100-dimensional vectors and drew the elbow ...
- 2,095
0
votes
1
answer
246
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Neighborhood analysis in Matlab using a dot plot
I have points in a 2D graph (coordinates: X,Y property: Z). I would like to find for every point the closest, for example, 5 points and save their properties.
What would be the easiest approach?
...
- 115
6
votes
2
answers
4k
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How to plot results from text mining (e.g. classification or clustering)?
In text classification and clustering, the number of features are normally big, e.g. I currently get are around 5,000 features which is already really small compared to many other text mining tasks. ...
- 1,201