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Top1. Introduction
In real world applications, the uses of spatiotemporal data are very extensive, such as traffic monitoring (Chen et al., 2003), large urban network (Laharotte et al., 2014), and person recognition (Gheissari et al., 2006), etc. Furthermore, spatiotemporal data have both spatial attributes and temporal attributes, and may change with time or space leading to uncertainties (Emrich et al., 2012). There are a lot of efforts studying temporal data modeling (Ma et al., 2022; Hu et al., 2015), spatiotemporal data modeling (Ma et al., 2013), uncertain spatiotemporal data modeling (Bai, et al., 2018), uncertain spatiotemporal reasoning, (Bai, et al., 2018), uncertain spatiotemporal querying (Emrich et al., 2012), fuzzy spatiotemporal data constructing, (Cheng, et al., 2019), fuzzy spatiotemporal modeling (Bai, et al. 2021), fuzzy spatiotemporal data representing (Cheng, et al. 2019), and fuzzy spatiotemporal data reasoning (Cheng, et al. 2021)
Owing to the development and popularization of science and technology, a large number of Web ordinary users can access information through various ways through spatiotemporal queries. Considering spatiotemporal query methods, Navathe et al. (Navathe & Ahmed, 1989) and Gao et al. (Gao et al., 2018) use temporal data query method, which queries whether the object changes within a certain period and the type of changes that have occurred. Dai et al. (Dai et al., 2005) and Sistla et al. (Sistla et al., 2015) apply the uncertain spatial data query, which queries the moving range of an object. Emrich et al. (Emrich et al., 2012) and Raghebi et al. (Raghebi & Banaei-Kashani, 2018) use the uncertain spatiotemporal data query technology, which queries the changes in a certain area within a certain time period. Wang et al. (Wang et al., 2013) utilize the join query method, which queries objects within a particular interval of time at a certain distance from a specific object. Furthermore, Wang et al. (Wang et al., 2013) use the spatiotemporal nearest neighbor query method, which queries an entity closest to the object or region under study within a specific time interval.