Characterizing the UAE national Web with a two-step filter

The Web as a large collection of pages is organized around a hierarchical domain system. For searching, analyzing or other purposes, selecting a subset from it is a challenging problem. In this paper, we address the issue of determining the pages related to a country as a subset. A Web page `belongs´ to a national Web if it bears or represents identities from a particular country. Using the national domain such as .ae, .uk, as primary identifier and IP address, geographic locations, and language as augmented/secondary identifiers is no longer adequate. We propose a two-step Web page classifier (1) pre-crawl filter and (2) post-crawl filter. The former stage prunes out Web pages not belonging to the nation under investigation before fetching/downloading a Web page while the later stage filters irrelevant ones through a multiple-step analysis after downloading a page. We used the United Arab Emirates (UAE) national Web as a case study. We share our experience crawling the national Web, introduce the crawler designed to accomplish the task, and present some of our results and findings.