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In the text preprocessing of text mining, a stop-word list is constructed to filter the segment results of the text documents so that the dimensionality of the text feature space can be cut down primarily. This paper summarized the definition, extraction principles and method of stop-word, and constructed a customizing Chinese-English stop-word list with the classical stop-word list based on the difference...
In this paper, we investigate monomial reachability and reachability of the special class of discrete-time positive switched systems whose subsystems exhibit the same system matrix A and different input-to-state matrices bi. Necessary and sufficient conditions for these properties to hold, together with some related examples, are provided.
In recent years, unfalsified adaptive switching supervisory control (UASSC) has emerged as an effective technique for tackling the problem of controlling uncertain plants only on the basis of the plant I/O data. The aim of this paper is to construct a novel switching logic, which, when combined with appropriate test functions, makes it possible to extend UASSC, so far restricted to time-invariant...
In this paper, we discuss the coordination of a group of autonomous agents with input saturation and time-varying interconnection. The state agreement of the whole agent group is discussed with bang-bang control protocols and switching interaction topologies described by joint connectivity on the time interval (t;??) for any time t. The convergence analysis for the considered system is carried out...
This paper presents a theoretical analysis of the parallel iterative matching (PIM)'s dynamics with multiple iterations used in an input-buffered packet switch. In the past, the formulation on the switching performance was derived by using the Stirling number of the Second Kind, which is a summary the number of different matches under traffic with uniform distribution. However, when traffic has a...
We focus the attention on the audio scene segmentation in AAC domain for audio-based multimedia indexing and retrieval applications. In particular, a MFCC extraction method is proposed, which is adaptive to the window switch in AAC encoding process, and independent of the audio sampling frequency. We discuss the fusion method of MFCC features, which came from different window type in order to keep...
The performance of the existing non-contiguous processor allocation strategies has been traditionally carried out by means of simulation based on synthetic workload models to generate streams of incoming jobs. To validate the performance of the existing algorithms, there is need to evaluate the algorithms' performance based on real workload traces. In this paper, we evaluate the performance of several...
Dealing with the deficiency in traditional adaptive model inversion control scheme of helicopter, we propose the slow switching AMIC scheme based on multiple points inversion models group and also give the asymptotic stability condition for the flight control system. In this scheme, multiple points inversion models group was constructed to replace the single point inversion model which is used in...
In this study, we consider Multi-user MISO systems based on Max-rate Limited Feedback Transmit Beamforming with B feedback bits. In the proposed idea, the Beamforming codebook {Wi}i=1N (N=2B) is divided into nD sub codebooks, such as D1,D2,..,DnD. At each channel use, the transmitter switches to a given sub-codebook adaptively to the user owning the worst case performance. Accordingly, the proposed...
In the paper, the k-switching reachability set Rk of a single-input positive switched system is introduced, and conditions for the chain of this sets {Rk; k isin Nopf}, to stop increasing after some finite index k are given. For the special class of positive switched systems, which commute among n single-input n-dimensional systems, sufficient conditions that ensure that the n-switching reachability...
IEEE 802.1Q VLAN is the basic concept in Ethernet network. With the Ethernet becoming cheaper and more popular the Ethernet networks are expanding to cover metros. The existing support for VLAN as standardized in IEEE 802.1Q is not able to scale to MEN deployment, because of limited 4095 VLANs and hence the requirement for VLAN Stacking. This paper introduce how to support both VLAN and VLAN stacking...
This paper examines various configurations of the large scale Russian National Intelligent Network in order to analyze the required volumes of signaling equipment. Network configuration is modified by adding network nodes and by sharing signaling load.
This paper proposes a methodology based on fuzzy multiobjective and tabu search to determine the optimal on/off patterns of tie and sectionalizing switches for feeder reconfiguration in a distribution system with distributed generators. Three main objectives considered in the feeder reconfiguration problem consist of power loss, feeder load balancing, and number of switching operations of the switches...
In recent years there have been several large-scale deployments of P2P live video systems. Existing and future P2P live video systems will offer a large number of channels, with users switching frequently among the channels. In this paper, we develop infinite-server queueing network models to analytically study the performance of multi-channel P2P streaming systems. Our models capture essential aspects...
Adaptive join algorithms have recently attracted a lot of attention in emerging applications where data is provided by autonomous data sources through heterogeneous network environments. Their main advantage over traditional join techniques is that they can start producing join results as soon as the first input tuples are available, thus improving pipelining by smoothing join result production and...
This paper applies a new concept in discrete event dynamic system (DEDS) optimization, called ordinal optimization, to address distribution reconfiguration for loss minimization. Different from the conventional optimization concept to make every effort to find the best numerical solution in a deterministic approach, ordinal optimization is to efficiently find a good enough solution with an acceptable...
This paper discusses a new sorting algorithm. This algorithm has best & average cases between O (3N) & O (4N) and for worst case it may be O (N2) or more swear both in speed and memory, but it has a great property to tell its worst case in the starting iteration loop so that it can be switched to other Sorting Algorithms in worst cases. Qureshi Sort can combine with bubble sort to enhance...
This paper shows a practical design example of the remote control system of a motorized pan/tilt head we made, and illustrates some experimental results to validate the remote control technique of the previous work. The control technique utilizes an appropriate quantization of feedback signals, transmitted over network communication links, in order to guarantee both stability of the whole system and...
This paper proposes the switching control method based on the controller performance assessment. The switching mechanism is based on the estimated controller performances which are calculated by all prepared controllers. The accepted controller has the best estimated performance of all controllers. Each controller performance is estimated by the numerical model. Finally, numerical evaluations demonstrate...
This paper compares voltage gain of control methods for the Z-source inverter under a given boost factor. The control methods of the Z-source inverter are simple boost control, maximum boost control and maximum constant boost control respectively. The Z-source inverter advantageously utilizes the shoot-through switching states besides active and zero states. The Z-source network makes the shoot-through...
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