At present, the air pollution problem has attracted extensive attention at home and abroad. Based on the field measurement, the authors conducted a multi-day and multi-point monitoring for the air quality indexes in Jinan City. Through a detailed comparison and analysis, a preliminary assessment of air quality status quo in Jinan City were finished. The situation of atmosphere pollution is closely related to the terrain, industry layout and urban planning of Jinan. The most prominent problem is that PM10 and TSP pollution are so severely that over standard rate reaches 100% for several monitoring points. The pollution of SO2 is fine in general, and NO2 pollution level is lighter than SO2. The pollution of CO is rather severe, and the situation of exceeding standards exists at every point. The pollution of NMHC is the weakest one and no indexes go beyond the standards.
Abstract-Dempster Shafer evidence theory, as an uncertain information fusion technology, is widely used in various fields of information fusion. However, when there is a highly conflict between two pieces of evidence, counterintuitive results are obtained by classical Dempster's combination rule. Therefore, it is very important to measure the conflict between two pieces of evidence. Based on the analysis of some typical conflict measurement methods, a new model to represent conflict was constructed with the Euclidean distance function and the Jaccard similarity coefficient. Some numerical examples illustrate that the proposed method can measure the degree of conflict between the two pieces of evidence and overcome the shortcomings of the classical conflictive coefficient, Jousselme evidence distance and Pignistic probability distance to a certain extent.
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