69 research outputs found
An Intelligent Complex Event Processing with D
Efficient matching of incoming mass events to persistent queries is fundamental to complex event processing systems. Event matching based on pattern rule is an important feature of complex event processing engine. However, the intrinsic uncertainty in pattern rules which are predecided by experts increases the difficulties of effective complex event processing. It inevitably involves various types of the intrinsic uncertainty, such as imprecision, fuzziness, and incompleteness, due to the inability of human beings subjective judgment. Nevertheless, D numbers is a new mathematic tool to model uncertainty, since it ignores the condition that elements on the frame must be mutually exclusive. To address the above issues, an intelligent complex event processing method with D numbers under fuzzy environment is proposed based on the Technique for Order Preferences by Similarity to an Ideal Solution (TOPSIS) method. The novel method can fully support decision making in complex event processing systems. Finally, a numerical example is provided to evaluate the efficiency of the proposed method
A New Quantum Dempster Rule of Combination
Dempster rule of combination (DRC) is widely used for uncertainty reasoning
in intelligent information system, which is generalized to complex domain
recently. However, as the increase of identification framework elements, the
computational complexity of Dempster Rule of Combination increases
exponentially. To address this issue, we propose a novel quantum Dempster rule
of combination (QDRC) by means of Toffoli gate. The QDRC combination process is
completely implemented using quantum circuits.Comment: 13 pages, 2 figure
DCM: D Number Extended Cognitive Map. Application on Location Selection in SCM
Offshore outsourcing is a widely used management technique for performing business functions with the aim of reducing labor and transportation costs. The selection of locations has a significant influence on the supply chain’s resilience and qualities, but the influence of multiple external factors on the supply chain’s performance in local places in a complex and uncertain environment has not been examined. In this study, we investigated the influence of external factors in a highly uncertain and complicated situation in which relationships between external factors and supply chain resilience are complicated. Furthermore, we proposed a novel model to select locations from a comprehensive perspective. Specifically, the fuzzy cognitive map (FCM) is utilized to simulate the dynamic influence process where the adjacency is aggregated by D numbers. The weights of different resilience capabilities are considered from the perspective of maximizing benefits by using the decision-making trial and evaluation laboratory-analytic network processes (DEMATEL-ANP) model. By comparing the distance to the ideal solutions, we selected the best alternative location. Our results differ from the general case, which reveals that the weights of different capabilities influence selections
A Modified TOPSIS Method Based on D
Multicriteria decision-making (MCDM) is an important branch of operations research which composes multiple-criteria to make decision. TOPSIS is an effective method in handling MCDM problem, while there still exist some shortcomings about it. Upon facing the MCDM problem, various types of uncertainty are inevitable such as incompleteness, fuzziness, and imprecision result from the powerlessness of human beings subjective judgment. However, the TOPSIS method cannot adequately deal with these types of uncertainties. In this paper, a D-TOPSIS method is proposed for MCDM problem based on a new effective and feasible representation of uncertain information, called D numbers. The D-TOPSIS method is an extension of the classical TOPSIS method. Within the proposed method, D numbers theory denotes the decision matrix given by experts considering the interrelation of multicriteria. An application about human resources selection, which essentially is a multicriteria decision-making problem, is conducted to demonstrate the effectiveness of the proposed D-TOPSIS method
Measurement of Stimulated Raman Side-Scattering Predominance and Energetic Importance in the Compression Stage of the Double-Cone Ignition Approach to Inertial Confinement Fusion
Due to its particular geometry, stimulated Raman side-scattering (SRSS)
drives scattered light emission at non-conventional directions, leading to
scarce and complex experimental observations. Experimental campaigns at the
SG-II UP facility have measured the scattered light driven by SRSS over a wide
range of angles, showing an emission at large polar angles, sensitive to the
plasma profile and laser polarization. Furthermore, direct comparison with
back-scattering measurement has evidenced SRSS as the dominant Raman scattering
process in the compression stage, leading to the scattering loss of about 5\%
of the total laser energy. The predominance of SRSS was confirmed by 2D
particle-in-cell simulations, and its angular spread has been corroborated by
ray-tracing simulations. The main implication is that a complete
characterization of the SRS instability and an accurate measurement of the
energy losses require the collection of the scattered light in a broad range of
directions. Otherwise, spatially limited measurement could lead to an
underestimation of the energetic importance of stimulated Raman scattering
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