Application Research Of Mining Association Rules In Teaching Evaluation

At former, each college has a great deal of data in their teaching evaluation,but these data just in order to carry on simple data statistics and search in the everyday's educating and teaching works. And the more worthy knowledge or information in the back of the great deal of data has not been made use of. At this time, the data mining technology that just works out this problem.Data mining is to reveal the implicated but useful information from massive incomplete, noise and fuzzy data. Its essential target is to extract valuable pattern from the large-scale database. Association rule mining and its application is an important branch of data mining that has obtained many valuable results but there still are a deal of more challenging problems to discuss.This paper introduces Data Mining and its relevant conception. it also studies data mining technology and its mining algorithms, mainly dealing with the improved apriori algorithmic that based on relation database and been worked out by SQL language and its practical application in teaching evaluation. At last we designed and developed a teaching evaluation information mining system that based Association rules.The task of mining association rules consists of two main steps. The first involves finding the set of all frequent itemsets. The second step involves testing and generating all high confidence rules among itemsets. For the both step, computable complexity is the bottleneck of the algorithm for the number of frequent itemsets increases with the number of items exponentially. This paper put out a algorithmic that based on SQL language and that is used to produce frequent itemset. This algorithm can directly carries an operation on the data that in a database by some mature SQL language sentence, so we are able to leave out the withdrawing data from the database and the process of realization by procedure language. At same time it includes some brief but efficiently operation clause and function in the SQL language sentence. So it Lowers complications of the calculate way and it availably reduces the number of times to scan the database. As a result, the algorithmic's validity will be approved. In the end, this pager elaborates the design and the development process of teaching evaluation system in detail, that is able to mining database. This system gathers the data collecting, the data preparation and the processing of data together, it applies the improved association mining algorithmic well and availably raises all kind of colleges'teaching evaluation works'efficiency.