Abstract
Meta search and social media are combined in our work to build a platform to share cross-media data. Data are extracted from web on demand with meta-search engine since more accurate and complete retrieval results can be provided than a single SE. The key to affect the performance of data extraction is the schedule of data sources to provide data efficiently. A uniform model to describe data sources is suggested, with this model a method to construct query plan graph and an algorithm to get the optimal query plan are proposed. A dynamic and adaptive adjustment approach for query plan execution is described to deal with unexpected failure of data source connection or data extraction. The details of wrapper manager encapsulating data sources are explained at the end of the paper.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsPreview
Unable to display preview. Download preview PDF.
References
Selberg, E., Etzioni, O.: Multi-Service Search and Comparison using the MetaCrawler. In: WWW 1995 (1995)
Liu, K.-L., Meng, W., Qiu, J., Yu, C.T., Raghavan, V., Wu, Z., Lu, Y., He, H., Zhao, H.: AllInOneNews: development and evaluation of a large-scale news metasearch engine. In: SIGMOD 2007, pp. 1017–1028 (2007)
List of major active social networking websites, http://en.wikipedia.org/wiki/List_of_social_networking_websites
Peng, Z., Wang, H., Peng, Y., Xu, B., Huang, Z.: A Three Layer System Architecture for Web-Based Unstructured Data Management. In: APWeb, pp. 447–450 (2010)
Shu, L., Meng, W., He, H., Yu, C.: Querying Capability Modeling and Construction of Deep Web Sources. In: Benatallah, B., Casati, F., Georgakopoulos, D., Bartolini, C., Sadiq, W., Godart, C. (eds.) WISE 2007. LNCS, vol. 4831, pp. 13–25. Springer, Heidelberg (2007)
Levy, A., Rajaraman, A., Ordille, J.: Querying Heterogeneous Information Sources Using Source Descriptions. In: VLDB, pp. 251–262 (1996)
Li, Y., Liu, D., Zhang, W.: A Query Discovery Algorithm Based on Schema Mapping. Computer Science (2006) (in Chinese)
Gu, Z., Li, J., Xu, B.: Automatic Service Composition Based on Enhanced Service Dependency Graph. In: ICWS 2008 (2008)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2012 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Li, R., Zhai, W., Peng, Z. (2012). Supporting Query over Dynamic Combination of Data Sources for Social Media. In: Wang, L., Jiang, J., Lu, J., Hong, L., Liu, B. (eds) Web-Age Information Management. WAIM 2011. Lecture Notes in Computer Science, vol 7142. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-28635-3_18
Download citation
DOI: https://doi.org/10.1007/978-3-642-28635-3_18
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-28634-6
Online ISBN: 978-3-642-28635-3
eBook Packages: Computer ScienceComputer Science (R0)