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Re: How to compare two sets of data?
Posted: Thu Mar 10, 2011 12:19 pm
by lmh
I have the books there in the hopes that if I sit next to them for long enough, some information will seep osmotically from them into me...
Re: How to compare two sets of data?
Posted: Fri Mar 11, 2011 7:26 am
by Peter Apps
In forensics there has been some work on fingerprinting the impurity profile of illicit drugs in order to compare batches and trace them back to source - that sounds similar to what wildfish wants to do.
Peter
Re: How to compare two sets of data?
Posted: Fri Mar 11, 2011 12:14 pm
by lmh
same situation in foods: fingerprinting to identify whether jams contain the fruits they should etc.
Re: How to compare two sets of data?
Posted: Wed Mar 16, 2011 7:11 am
by wildfish
In forensics there has been some work on fingerprinting the impurity profile of illicit drugs in order to compare batches and trace them back to source - that sounds similar to what wildfish wants to do.
Peter
Thanks Peter, Don and lmh.
I think you are right there Peter. It is similar to fingerprint but just applied to my specific situation. Anyone can tell me more about that, e.g. how the fingerprint sets up limit/criteria for similarity test? what statistic method do they use? etc.
Any ideas/comments/suggestion will be very welcomed.
Re: How to compare two sets of data?
Posted: Wed Mar 16, 2011 8:18 am
by Peter Apps
Hi Wildfish
Time for you to do some literature searching- the forensic chemistry journals would be a good place to start.
Peter
Re: How to compare two sets of data?
Posted: Wed Mar 16, 2011 11:18 am
by Don_Hilton
If you google "Chromatography similarity index" you will see several hits on the first copule of pages related to computing a similarity index between chromatograms. (I did not go beyond the second page displayed.)
Not a very slelective set of index terms, but it may get you a start.