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A scalable method for mining graph patterns stable under subsampling is proposed. The existing subsample stability and robustness measures are not antimonotonic according to definitions known so far. We study a broader notion of antimonotonicity for graph patterns, so that measures of subsample stability become antimonotonic. Then we propose gSOFIA for mining the most subsample-stable graph patterns...
Skypatterns are an elegant answer to the pattern explosion issue, when a set of measures can be provided. Skypatterns for all possible measure combinations can be explored thanks to recent work on the skypattern cube. However, this leads to too many skypatterns, where it is difficult to quickly identify which ones are more important. First, we introduce a new notion of pattern steadiness which measures...
In this paper, we focus on the problem of finding partial similarity between data streams. Our solution relies on dynamic time warping (DTW) as a similarity measure, which computes the distance between sequences whose lengths and/or sampling rates are different. Instead of straightforwardly using DTW that requires a high computation cost, we propose a streaming method that efficiently detects partial...
Stabilizability of linear time invariant networked systems of general structure is studied with an observer-based approach. In the assumption of piecewise constant controls an average consensus network distributes input information to all agents enabling them to build local observers on the basis of which stabilizing gains are computed with recourse to standard centralized methodology. Stabilizability...
This paper is concerned with stability analysis of discrete-time networked control systems in the case where both input and output channels are characterized by a multiple-packet transmission policy. A necessary and sufficient condition for stability is obtained for known packet dropping probabilities. The issue of stability robustness of a system against packet dropping is discussed and addressed...
Information on the Web has become a production factor. Author of a unique text is unaware of its download, assessment, revision or reuse. At this juncture authorship management becomes a serious issue for digital text. To handle this issue information of the original author must be hidden in the text itself by natural language watermarking. Authorship is protected by linguistically modifying a given...
A novel mixed surface reconstruction algorithm based on re-sample is proposed to improve the reconstructed feature quality and solve the problem of surface intersection. First, the local feature scale is employed to judge the sample density of initial sample point set, and consequently the redundant sample points are deleted. Meanwhile, the necessary sample points are plugged into the deficient feature...
Network coordinate (NC) which provides efficient distance prediction with scalable measurements, brings benefits to various network applications. Phoenix Network Coordinate system is a recently proposed dot product based NC system with high prediction accuracy and better robustness. In this paper, we discuss the neighbor selection policies for Phoenix and propose a modified Phoenix with hybrid neighbor...
DASH, or the dynamic autonomous sprawled hexapod, is a small, high-power density, minimally actuated robot capable of high-speed running and surviving large falls. The design of DASH has been informed by the study of nature's greatest runners from whom scientists have derived many models for robust high-speed locomotion. DASH is constructed using a scaled smart composite manufacturing (SCM) process...
In this article, the problem of finding maximum (weight) independent set (M(W)IS) is investigated. It is known that this problem belongs to the class of NP-hard problems. Although, there are polynomial time (P-time) algorithms to solve the M(W)IS problem for some special classes of graphs. Here, we propose a general scheme which extends all of classes that the M(W)IS problem is solvable for them in...
We introduce a method for controlling the spatial robustness of a mixed phase loudspeaker equalizer design. The emphasis is on time domain behaviour and the pre-response error that is always present in mixed phase design. Based on measurements from a small spatial region, a mixed phase compensator is regularized to be valid also over a large spatial region. The regularization can be applied gradually...
A new approach to the single-channel loudspeaker equalization problem is presented. A scalar discrete-time mixed-phase precompensation filter is designed to be spatially robust, meaning that equalization performance should be insensitive to listener movements within a predefined spatial region. The problem is posed in a single-input multiple-output (SIMO) feedforward control framework and a polynomial...
This paper presents an efficient method for chord transcription of music signals. A succession of chroma vectors is calculated from the signal in order to extract the musical content of the piece over time. We introduce a set of chord templates for several types of chords (major, minor, dominant seventh, ...): different chord models taking into account one or more harmonics of the notes of the chord...
The proposed scheme of this paper is embedding watermark into intra frame (I-frame). The most challenge of watermark that embedded into intra frame is the selection of intra prediction might be changed. In the research, different AC coefficient gets different effect when the selection of intra prediction was changed in another compression course. Therefore, it's necessary that finding what AC coefficients...
We study the problem of distributed estimation, where a set of nodes are required to collectively estimate some parameter of interest from their measurements. Distributed implementations avoid the use of a fusion center and distribute the processing and communication across the entire network. Among distributed solutions, diffusion algorithms have been shown to achieve good performance, increased...
Primates demonstrate an outstanding ability of gaining a continuous tracking of target in cluttered environments after target disappears in the scene for a long time while it is still a challenge for artificial visual system to do so. Research in psychology indicates that selective visual attention with two attention selection processes is crucial to visual tracking. This paper presents a novel visual...
In video stream transmission over unreliable networks, the loss of a packet may result in an entire video frame, which may consequently cause severe degradation of all subsequent frames. To solve the problem, based on prediction, presented in this paper is a new pre- and post processing method with flexible redundancy insertion between descriptions for frame-based multiple description code. The simulation...
In this paper we revisit the synthesis of the Power System Stabilizers (PSSs) following some recent objectives and constraints imposed by the evolution of the European interconnected power system. Some principles of approaches used in an independent and even concurrent way are combined and enriched to provide a coordinated way to adjust the parameters of standard (IEEE-type) PSS loops of several machines...
It's proved that Nivrepsilas algorithm causes some errors for determining the right-side dependents. In Chinese, only verbs and prepositions have right-side dependents. Jin proposed a two-phase parser to solve verbs' problems. In this paper, we present a method to solve prepositions 'problems. Experimental results show that our approach achieves higher accuracy than previous approach.
Taking unfinished parts, that is, parts' work-in-progress (WIP), as the background, the PI control algorithm is proposed to apply for WIP control in discrete production systems and the cascade control of PI controllers is suggested. Designing of PI controllers is transformed into an optimization problem on the frequency domain, so as to guarantee the stability and robustness of PI controllers' parameters...
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