Normalizes the set of the observation to the interval [0,1] conform the
normalization of the FIS
obs=NormalizeObservation(obs,Offset,RangeLength)
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Parameters
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obs - structure describing the original observation
Variable(i) - vector describing the current linguistic variable
|-Offset - measure of the shifting
|-RangeLength - original range of the linguistic variable
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Returned values
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obs - structure describing the shifted observation
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Remarks
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