Understanding Content Reuse on the Web: Static and Dynamic Analyses

Abstract. In this paper we present static and dynamic studies of duplicate and near-duplicate documents in the Web. The static and dynamic studies involve the analysis of similar content among pages within a given snapshot of the Web and how pages in an old snapshot are reused to compose new documents in a more recent snapshot. We ran a series of experiments using four snapshots of the Chilean Web. In the static study, we identify duplicates in both parts of the Web graph ? reachable (connected by links) and unreachable components (unconnected) ? aiming to identify where duplicates occur more frequently. We show that the number of duplicates in the Web seems to be much higher than previously reported (about 50% higher) and in our data the duplicated in the unreachable Web is 74,6% higher than the number of duplicates in the reachable component of the Web graph. In the dynamic study, we show that some of the old content is used to compose new pages. If a page in a newer snapshot has con...

• Type: Conference
• Year: 2006
• Where: KDD
• Authors: Ricardo A. Baeza-Yates, Álvaro R. Pereira Jr., Nivio Ziviani
• Keywords: Data Mining, KDD 2006, Old Snapshot, Older Snapshot, Web Graph