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Location-Based Service (LBS) is considered as a key component of upcoming ubiquitous environments. A recommendation system based on LBS is expected to be an important service in ubiquitous environments , and most hardware technologies such as location estimation of a user by using Global Positioning System (GPS), as well as hi-speed internet access through(More)
Mobile sinks in wireless sensor networks have been the target of extensive research recently due to their efficient energy consumption and various possible applications. To support mobile sinks, an energy efficient routing protocol is essential. In this light, the present study proposes a milestone-based predictive routing protocol that improves energy(More)
Minimization of the number of cluster heads in a wireless sensor network is a very important problem to reduce channel contention and to improve the efficiency of the algorithm when executed at the level of cluster-heads. This paper proposes a Self Organizing Sensor (SOS) network based on an intelligent clustering algorithm which does not require many user(More)
In the fields of production, manufacturing and supply chain management, Radio Frequency Identification (RFID) is regarded as one of the most important technologies. Nowadays, Mobile RFID, which is often installed in carts or forklift trucks, is increasingly being applied to the search for and checkout of items in warehouses, supermarkets, libraries and(More)
Document clustering or unsupervised document classification has been used to enhance information retrieval. Recently this has become an intense area of research due to its practical importance. Outliers are the elements whose similarity to the centroid of the corresponding category is below some threshold value. In this paper, we show that excluding(More)