“…Table 1 illustrated the advantage and disadvantage of algorithms that which were mentioned and Figure 2 shows the types of scheduling algorithms. On the other hand, the pattern recognition is an important and fertile topic as it has entered many applications such as recognizing the different languages from Arabic, English, and other languages of the world [39], so, many databases have been built to implement and test these applications [40][41][42][43][44], as result, the recognition has entered a large area in many applications in the cloud environment such as Emotion of human [45] and activity recognition [46], and face recognition [47][48][49]. Easier for implementing, and it is free from famine (which means that the process does not have the resources to complete it permanently or after a long time.…”