4. A method as claimed in claim 3, wherein the step of determining the at least one second probability value includes an exponential function, wherein the second weighting values are used a negative exponent for the base of the natural logarithm, and multiplication by a second number, the second number being chosen in such a way that the sum of the probability values of all sequences is equal to 1, and the reliability measure of the data result is derived from the sum of the probability values of the sequences comprising the portion of data.
3. A method as claimed in claim 2, further including the step of determining at least one second probability value using the second weighting values.