  This paper presents and analysis the common existing sequential pattern
mining algorithms. It presents a classifying study of sequential pattern-mining
algorithms into five extensive classes. First, on the basis of Apriori-based
algorithm, second on Breadth First Search-based strategy, third on Depth First
Search strategy, fourth on sequential closed-pattern algorithm and five on the
basis of incremental pattern mining algorithms. At the end, a comparative
analysis is done on the basis of important key features supported by various
algorithms. This study gives an enhancement in the understanding of the
approaches of sequential pattern mining.
