Again, the scores Rs are normalised over all candidate classes ‘s’.
The sample may then be classified as belonging to the class having the highest probability and/or highest RMS classification score.
Using Results of Analysis
As discussed above, the spectrometric analysis method 100 of 
This may comprise, for example, displaying the results of the classification using the feedback device 210 and/or controlling the operation of the sampling device 202, spectrometer 204, pre-processing circuitry 206 and/or analysis circuitry 208.
The results can be used and/or provided whilst a sampling device that is being used to obtain the sample spectra is in use.
Various different applications are contemplated.
According to some embodiments the methods disclosed above may be performed on organic matter, biological matter and/or in vivo, ex vivo or in vitro tissue. The tissue may comprise human or non-human animal tissue.
Various surgical, therapeutic, medical treatment and diagnostic methods are contemplated. However, other embodiments are contemplated which relate to non-surgical and non-therapeutic methods of spectrometry which are not performed on in vivo tissue. Other related embodiments are contemplated which are performed in an extracorporeal manner such that they are performed outside of the human or animal body.
Further embodiments are contemplated wherein the methods are performed on a non-living human or animal, for example, as part of an autopsy procedure.