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Estimating network topology is a non-trivial task. Different from the state-of-art methods such as traceroute-like active probing, network tomography and network protocols analysis based passive measurement, this work proposes a novel method to estimate the network hidden topology using time to live (TTL) values extracted from IP packets. TTL contains the information about hops of the forward paths...
Webpage keyword is widely used in personalized search and recommendations. The accuracy of keyword is significant to the quality of search and recommendation result. Current keyword extraction methods' accuracy is not high. In order to make up for the shortage of present technology, a new keyword weight adjusting schema based on Domain Repository has been proposed in this paper. Three steps: 1) Extract...
TF-IDF algorithm is widely used in text feature extraction, in which IDF value demonstrates the importance of a term. While applying to the procession of web news, the traditional IDF doesn't work well, especially in a collection divided according to channels. In order to solve this problem, a refined IDF schema is proposed, named Channel Distribution Information (CDI) IDF, which is based on the information...
Recommender system emerges as a technology addressing "information overload" problem. Collaborative Filtering (CF) is successful and widely used in many personalized recommender applications, such as digital library, e-commerce, news sites, and so on. However, most collaborative filtering algorithms suffer from data sparsity problem which leads to inaccuracy of recommendation. This paper...
Blog post summarization using fast features facilitates users' quick browsing through blog search results. Much existing research on blogs ignores blog tags and text structure. In this paper, we re-formalize the blog post summarization problem as a sentence extraction and sentence ranking problem. Three fast features, important sentences, blog tags and blog comments, are proposed to calculate salience...
Botnet has recently been identified as one of the most important security threats of the Internet. So we should study the new technology which may be used by botmaster in the near future. In this paper we predict the new feature of the next generation botnet and present the design of an advanced P2P botnet basing on our discussion.
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