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In order to solve the multi-robot task allocation problem in logistics warehouse environment, first a robot task allocation model is established in which a corresponding benefit function is established with a consideration of two mainly factors including time window and distance. Then the ant colony algorithm pheromone updating rule is improved combining with working environment and task allocation...
Experimenting in computer science course is challenging due to the limitation of site, equipment and special experiment tools. In this paper, based on the analysis of the experiments features of computer science curricula, such as, Principle of Computer Organization, Digital Image Process, Digital Signal Process etc., we design two kinds of virtual lab platforms and develop corresponding virtual lab...
Bichromatic reverse nearest neighbor (BRNN) has been extensively studied in spatial database literature. While previous algorithms for BRNN queries rely mainly on in-memory and do not guarantee the scalability. A straightforward approach is to determine the BRNN for all possible points that are not feasible since there are a large or infinite number of possible points. To the best of our knowledge,...
Dynamic skyline queries are useful in decision making and data-intensive applications. With the number of data increases, such skyline calculation is a challenging problem. Unfortunately, skyline query processing in centralized system is not suitable for the case. In this paper we propose a parallel algorithm which can calculate dynamic skylines with MapReduce. Firstly, we build an appropriate Inverted...
Reverse k Nearest Neighbor (RkNN) queries are of particular interest in a wide range of data mining applications such as decision support systems, profile based marketing and spatial database etc. With the increasing volume of spatial data, it is difficult to perform RkNN queries efficiently because of the limited computational capability and storage resources. In this paper, we investigate how to...
The L2 shared cache is an important resource for multi-core system. The cache replacement algorithm of L2 shared cache is one of the key factors in judging whether the L2 shared cache of multi-core system is efficient. In this paper, we study shared-cache simulation for multi-core with the LRU2-MRU collaborative cache replacement algorithm. We propose a theoretical foundation for LRU2-MRU to show...
At present, typical application-specific NoC systems often integrate a number of heterogeneous components which have varied functions, sizes and communication requirements. Instead of regular topology networks, constructing irregular mesh topology network on chip (NoCs) becomes an attractive approach to building future NoC systems with irregular structure. Deadlock-free routing control algorithm is...
A high quality test paper auto-generating is generally at the cost of considerable time. In order to handle the contradiction between quality and speed of combination, an improved subsection-single-point crossover and mutation GA based on real segment coding and condition matrix is proposed in the thesis. In the design of genetic operators roulette wheel selection, subsection-single-point crossover...
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