| 方向限制的信息搜索引擎在智能交通系统中的应用研究 |
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| 引用本文： | 胡适,朱宏. 方向限制的信息搜索引擎在智能交通系统中的应用研究[J]. 中国电子商务, 2013, 0(18): 45-46,48 |
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| 作者姓名： | 胡适 朱宏 |
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| 作者单位： | 四川大学计算机学院 四川 成都 610065 |
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| 摘 要： | 基于位置的信息服务(LBS)要求在任何时间,任何地点,向有需要的人群提供正确的位置信息,因而在智能交通系统(ITS)中有着广泛的应用.传统的信息搜索方式是先对海量数据进行关键字检索,再对兴趣点进行逐个排除并得到最终结果,这种方式运算量大,检索结果复杂.方向限制的信息搜索通过对兴趣点建立新型索引,利用快速有效的剪枝技术结合关键字索引方法预先剪除大量不符合方向要求的数据,显著提升了搜索效率,为用户的出行提供更加便利的体验效果.
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| 关 键 词： | 基于位置的信息服务 智能交通系统 交通信息兴趣点 方向限制 信息搜索 |
ON THE APPLIED RESEARCH OF DIRECTION RESTRICTION INFORMATION SEARCH ENGINES OF ITS |
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| Hu Shi , Zhu Hong. ON THE APPLIED RESEARCH OF DIRECTION RESTRICTION INFORMATION SEARCH ENGINES OF ITS[J]. Discovering Value, 2013, 0(18): 45-46,48 |
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| Authors: | Hu Shi Zhu Hong |
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| Affiliation: | (Sichuan University, College of Computer, Cheng Du 610065) |
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| Abstract: | LBS （Location-Based Services） request to provide a correct location information to someone in need at any time ,any point ,so they have been widely used in intelligent transportation systems（ITS）.The traditional way finds out the candidates from massive data first, then excludes the points of interest individually and gets the final results. This way has large amount of computation, complex results. Direction restriction information search establishes a new indexing structure, combines the effective pruning techniques with keyword search method to prune a lot of unnecessary points of interest in advance. It improves the efficiency of search significantly, provides more convenience experience for the user＇s travel. |
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| Keywords: | Location-based services Intelligent transportation systems Traffic points of interest Direction-aware Information search |
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