基于不确定性平面线段的近邻查询

提出带有不确定性区域的平面线段的近邻查询问题，并根据线段之间的空间位置关系情况，对最近邻距离实现了有效的计算。主要工作有两方面：一是将平面线段的模糊区域表示成不确定性的边界区域，把线性对象影响范围的不确定性考虑进来，再根据线段位置关系的不同分别进行距离计算；二是在进行近邻查询时采用了概率方法计算出影响度，用来定量度量线段受到的影响程度。最后通过实验证明所提出的带有不确定性区域的线段近邻查询研究方法的有效性。

Nearest neighbor query of line segment with uncertainty

This paper proposes the subject of nearest neighbor query with uncertain line segments and achieves an effective calculation to the nearest neighbors according to the spatial position relationship between the lines.The main jobs of this paper are there： First, it expresses the fuzzy region of the line segment into the border area of uncertainty and the affected area of the line segment is considered deeply and the distance between two line segments is calculated according to their position relationships separately; Second,the probability formula is used to calculate the impacted degree and the purpose is to measure the impacted level on specified line segments.Finally, the experiment shows that the method of nearest neighbor query of line segment with uncertainty is effective.