In most statistical problems in applied fields, uncertainty is an important factor in research, and
measuring uncertainty is also considered an important topic for researchers. Uncertainty is one of
the most common phenomena in various fields of research that will make things unpredictable.It
is very important for a researcher to provide ways to calculate and check this uncertainty.One of
the most common measure for evaluating and measuring uncertainty is the entropy .In this thesis,
Deng’s entropy and its new generalization are examined and its application . Finally ,by using this
new entropy and accurately understanding its relationship with Shannon’s entropy , lets examine
the importance of deng the study of Deng’s entropy in the classification problem.