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Additive manufacturing of three-dimensional objects are now more and more realised through 3D printing, known as an evolutional paradigm in the manufacturing industry. Artificial intelligence is currently finding wide applications to 3D printing for an intelligent, efficient, high quality, mass customised and service-oriented production process. This paper presents a comprehensive survey of artificial...
On the usual high-dimensional fuzzy number space, the usual supremum metric $D$ (derived by the Hausdorff metric between the level sets of usual $n$-dimension fuzzy numbers) and the “$p$” metric $\rho _p$ are the most common metrics. However, due to the complexity of the level sets of usual $n$ -dimensional fuzzy numbers, the two kinds of metrics not only have a tendency to be rougher, but also...
In this paper, we dedicate to fighting against the multiple carrier frequency offsets (MCFOs) in two-relay decode-and-forward (DF) cooperative networks. A full-rate code named frequency reversal Alamouti code (FRAC) is designed for two-relay cooperative orthogonal frequency-division multiplexing (OFDM) networks. Reversal makes the equivalent channel matrix between the relays and the destination complex...
Finite fields were successfully used to construct algebraic low-density parity-check (LDPC) codes, especially Quasi-Cyclic LDPC codes. These LDPC codes with large minimum distances have lower error floor, linear complexity of encoding and are more practical for hard-decision algebraic decoding. In this paper, we show that finite fields can also be successfully used to construct algebraic low-density...
IEEE 802.15.4 defines a duty cycle based medium access control (MAC) protocol to reduce the energy consumption for devices in wireless sensor networks (WSNs). A low duty cycle significantly improves the energy efficiency but reduces the available transmission time, thereby increases end-to-end delay. In this paper, we solve an adaptive duty cycle control problem for beacon-enabled IEEE 802.15.4 networks,...
Mining unordered trees are very useful in domains like XML date, biological information, Web structure, etc. In this paper, we introduce an efficient algorithm UTMiner (unordered trees miner). As the trees are unordered, in order to avoid mining the same subtrees, an efficient unordered trees standardization is first introduced to transform the unordered trees into the standard subtrees. Then UTMiner...
The concept lattice, the core data structure in the formal concept analysis, has been used widely in machine learning, data mining, etc. In the formal concept analysis, researching on constructing the concept lattice efficiently is one of the important contents. This paper presents a new algorithm called IETreeCS (Concept Sets based on Intension and Extension Tree) based on the IE-Tree (Intension...
Induced subtrees mining is of important researching value in the fields of XML documents, bioinformatics, web log and so forth. In this paper, the two conceptions of subtree vector and pruning threshold are proposed, and an algorithm ITMSV (induced subtrees mining based on subtree vector) is presented to discover frequent induced subtrees quickly by taking full advantages of the features of subtree...
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