Based On The DOE And TOPSIS To Evaluate The Smartphones

With the rapid development of the science and technology, the smartphone emerges at the historic moment, there is an increasing demand for smart phones. In the face of such a large demand, more and more businesses try to be the first to enter the field of developing, producing and selling the smartphones. However, customers don’t know how to choose the high quality and personalized smartphones, when they face the variety and uneven quality of smartphones. And this topic has become the focus of decision-making theory and practice. Consumers choose smartphones, they should identify the key elements and determine the effective method to evaluate the quality of the smart phone. On the basis of predecessors’ researches, this article will combine orthogonal experiment design method and TOPSIS method, the main work includes three aspects:(1) the method of build the index system is proposed. Collecting and analyzing of the literatures of multiple attribute decision making problems and smartphones evaluation, according to the literature analysis method and decision goals to establish the initial index system, then using the orthogonal experiment design method verify the rationality of the initial index system, excluding those unrelated indicators, the objective and reasonable index system is constructed.(2) we put forward a method of determine the index weights. Using the orthogonal experiment design method expanded the empirical data, then we use these data to analyze the degree that the index factors affect the targets, this method is more accurate and reasonable than the subjective valuing method. The method is accurate and reasonable. And determine the index weight of TOPSIS method can make up for the reverse problem caused by the change of the index weight.(3) The example of smartphone assessment is given. using the method select the smartphone, and we illustrated the calculation process in detail, so as to verify the feasibility and effectiveness of this method.In this paper, we have these innovation points in terms of theory and practice: At first, the method building the index system is proposed. Using the orthogonal experiment design method expands the decision data, and using these data verify the correlation of indicators and decision objective to exclude irrelevant indicators, and to build more objective and reasonable of the index system; Secondly, we put forward a method to confirm the index weights, that is to say, using the variance analysis analyze the result of the orthogonal test, and the index weights are determined by calculating the variance contribution rate of indicators, this method helps to solve the TOPSIS method of reverse order, and the reverse order is induced by the change of weight. At last, in the practical level, consumers use the method to evaluate and select the same price and domestic smartphones, and the feasibility and validity of the method are verified.Finally, the research achievements, the major contributions and the limitations of this paper were given, and the follow-up research work was also prospected.