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In location-based social networks, the current friend recommendation algorithms just take a relatively single factor into account without comprehensive evaluations. To solve this problem, we design a framework - Multiple Heterogeneous Social Network (MHSN) according to users' profiles, check-in records and interests. Based on this framework, we propose a friend recommendation model which consider...
The fuel efficiency and exhaust emissions are main drivers for the development of diesel engine control technology. Some of the most important challenges in transient control of diesel engine are the reduction of NOx (nitrogen oxides), soot emissions and BSFC (brake specific fuel consumption, increase of fuel efficiency) simultaneously during rapid engine speed changes. In this paper we propose a...
This article mainly discusses the the Android's security mechanism and the possibility of the coordinated attack caused by the android application's component structure. Then we put forward the data filtering solution and the implement for the data transfer of the android applications. This solution is based on the k-divided bloom filter. At the end we evaluate the experiment results. We could see...
The graph structure is a very important means to model schemaless data with complicated structures, such as protein-protein interaction networks, chemical compounds, knowledge query inferring systems, and road networks. This paper focuses on the index structure for similarity search on a set of large sparse graphs and proposes an efficient indexing mechanism by introducing the Q-Gram idea. By decomposing...
RFID holds the promise of real-time identifying, locating, tracking and monitoring physical objects without line of sight, and can be used for a wide range of pervasive computing applications. To achieve these goals, RFID data have to be collected, filtered, and transformed into semantic application data. RFID data, however, contain false readings and duplicates. Such data cannot be used directly...
We proposed a worm detection and defense system named bot-honeynet in this paper, which combines the best features of honeynet, anomaly detection and botnet. The combination of honeynet and anomaly detection system offers a tradeoff between false positive and false negative rates. The control mechanism of botnet can help our system control all the honeypots in the bot-honeynet. Bot-honeynet is designed...
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