Timeline for How do I apply MDS analysis on my data set?
Current License: CC BY-SA 3.0
7 events
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| May 18, 2016 at 20:30 | vote | accept | masfenix | ||
| Oct 24, 2014 at 18:55 | comment | added | scottzed | (accidentally pressed enter above)... Also, the values aren't measurements, they're probabilities, so correlation doesn't make a lot of sense. You should submit a question asking what row-wise distance metric makes sense to use with a matrix of probabilities, I'm sure someone will have a better rationale than I can provide. | |
| Oct 24, 2014 at 18:47 | comment | added | scottzed | It was more intuition that made me say that, I didn't have a formal reason in mind. Many zeroes will make a correlation much higher between the rows of your matrix than is probably indicated | |
| Oct 24, 2014 at 14:41 | comment | added | masfenix |
Thank you. I have a much better understanding now. Do you mind expanding on (given the number of zeroes in your dataset, correlation is probably not a good choice).? I don't have a statistics background so I am not sure why this is the case. Also, if I was to use correlation (just to see why its a bad idea), what would be a good formula to use?
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| Oct 24, 2014 at 2:55 | review | First posts | |||
| Oct 24, 2014 at 3:00 | |||||
| Oct 24, 2014 at 2:53 | history | edited | scottzed | CC BY-SA 3.0 |
expanded on what MDS is doing
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| Oct 24, 2014 at 2:44 | history | answered | scottzed | CC BY-SA 3.0 |