| 基于位置的web搜索索引研究 |
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| 引用本文： | 周英华,金培权,岳丽华,龚育昌.基于位置的web搜索索引研究[J].中国科学技术大学学报,2007,37(2):147-152. |
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| 作者姓名： | 周英华 金培权 岳丽华 龚育昌 |
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| 作者单位： | 中国科学技术大学计算机科学技术系,安徽合肥,230027 |
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| 基金项目： | 国家自然科学基金杰出青年科学家基金 |
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| 摘 要： | 针对基于位置的web搜索需要将网页中位置信息和文本信息相结合进行索引的应用需求,提出了先倒排表再R-tree索引和先R-tree再倒排表索引两种混合索引结构,同时处理文本和位置信息.大规模真实数据集上的实验表明,这两种方法在查询效率上明显优于已有的倒排表和R-tree相互独立的索引模式.
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| 关 键 词： | 基于位置的web搜索 位置索引 文本索引 |
| 文章编号： | 0253-2778(2007)02-0147-06 |
| 修稿时间： | 01 7 2006 12:00AM |
Research on index of location-based web search |
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| ZHOU Ying-hua,JIN Pei-quan,YUE Li-hua,GONG Yu-chang.Research on index of location-based web search[J].Journal of University of Science and Technology of China,2007,37(2):147-152. |
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| Authors: | ZHOU Ying-hua JIN Pei-quan YUE Li-hua GONG Yu-chang |
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| Institution: | Department of Computer Science and Technology, University of Science and Technology of China, Hefei 230027, China |
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| Abstract: | For location-based web search,geographic information should be indexed with textual information.Two hybrid index structures were proposed to deal with both textual and geographic information: one of inverted file preceding the R-tree and one of R-tree preceding the inverted file.Experiments on large real-world web datasets show that the proposed structures have better query performance than the existing index schema of separate inverted file and R-tree. |
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| Keywords: | location-based web search spatial index textual index |
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