|
Information and Service
|
|
| This Article | |
 |
Supporting info |
|
PDF(775KB) |
|
[HTML] |
|
Reference |
| Service and feedback | |
|
Add to Citation Manager |
|
Cite This Article |
|
Email Alert |
| Keywords | |
|
temporal equivalence and inclusion |
|
query and incremental update |
|
dynamical management and implemention |
|
temporal relation and XML |
| Authors | |
| PubMed | |
Study and application of temporal index technology
YE XiaoPing(1), TANG Yong(1,2) CHEN LuoWu(1), GUO Huan(1), ZHU Jun(1,3 )CHEN KaiYuan(1)
1. School of Information Science and Technology, Sun Yet-sen University, Guangzhou 510275, China;2. School of Computer Science, South China Normal University, Guangzhou 510631, China;3. Department of Computer Science, Dongguan University of Technology, Dongguan 523000, China
This paper addresses the mathematical relation on a set of periods and temporal indexing constructions as well as their applications. First we introduce two concepts, i.e. the temporal connection and temporal inclusion, which are equivalence relation and preorder relation respectively. Second, by studying some basic topics such as the division of ``large" equivalence classes and the overlaps of preorder relational sets, we propose a temporal data index model (TDIM) with a tree-structure consisting of a root node, equivalence class nodes and linearly ordered branch nodes. Third, we study algorithms for the temporal querying and incremental updating as well as dynamical management within the framework of TDIM. Based on a proper mathematical supporting, TDIM can be applied to researching some significant practical cases such as temporal relational and temporal XML data and so on.
Supported by the National Natural Science Foundation of China (Grant Nos. 60373081, 60673135), the Natural Science Foundation of Guangdong Province (Grant No. 05003348), the Program of New Century Excellent Person Supporting of Ministery of Education of China (Grant No. NCET-04-0805)