Muñoz-Dueñas Pilar, Martínez-Comesaña Miguel, Martínez-Torres Javier, Bastos-Costas Guillermo
Department of Financial Economics and Accounting, Faculty of Economics and Business Sciences, University of Vigo (Universidade de Vigo), 36310 Vigo, Spain.
CINTECX - Research Center in Technologies, Energy, and Industrial Processes, Universidade de Vigo, Rúa Maxwell s/n, 36310 Vigo, Spain.
Heliyon. 2023 Feb 13;9(2):e13718. doi: 10.1016/j.heliyon.2023.e13718. eCollection 2023 Feb.
Twitter has been actively researched as a human mobility proxy. Tweets can contain two classes of geographical metadata: the location from which a tweet was published, and the place where the tweet is estimated to have been published. Nevertheless, Twitter also presents tweets without any geographical metadata when querying for tweets on a specific location. This study presents a methodology which includes an algorithm for estimating the geographical coordinates to tweets for which Twitter doesn't assign any. Our objective is to determine the origin and the route that a tourist followed, even if Twitter doesn't return geographically identified data. This is carried out through geographical searches of tweets inside a defined area. Once a tweet is found inside an area, but its metadata contains no explicit geographical coordinates, its coordinates are estimated by iteratively performing geographical searches, with a decreasing geographical searching radius. This algorithm was tested in two touristic villages of Madrid (Spain) and a major city in Canada. A set of tweets without geographical coordinates in these areas were found and processed. The coordinates of a subset of them were successfully estimated.
推特已被作为人类移动性的代理进行了积极研究。推文可包含两类地理元数据：推文发布的位置以及据估计推文发布的地点。然而，在查询特定位置的推文时，推特也会呈现没有任何地理元数据的推文。本研究提出了一种方法，其中包括一种算法，用于为推特未分配地理坐标的推文估计地理坐标。我们的目标是确定游客的出发地和所走路线，即使推特未返回地理标识数据。这是通过在定义区域内对推文进行地理搜索来实现的。一旦在某个区域内找到一条推文，但其元数据中不包含明确的地理坐标，就通过以递减的地理搜索半径迭代执行地理搜索来估计其坐标。该算法在西班牙马德里的两个旅游村庄和加拿大的一个主要城市进行了测试。在这些区域中发现并处理了一组没有地理坐标的推文。其中一部分推文的坐标被成功估计出来。
