Detecting the Number of Clusters in n-Way Probabilistic Clustering

He, Zhaoshui; Cichocki, Andrzej; Xie, Shuguo; Choi, Kyuwan

doi:10.1109/tpami.2010.15

Cited by 165 publications

(13 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, we provide a numerical example including fixed-point and trajectory controls so that the validity of our method is ensured. Future works may extend the proposed method and combine it with advanced learning methods such as those in [43,44,45,46,47,48,49].…”

Section: Discussionmentioning

confidence: 99%

Computational Efficiency-Based Adaptive Tracking Control for Robotic Manipulators with Unknown Input Bouc–Wen Hysteresis

Xie

Lai

2019

Sensors

View full text Add to dashboard Cite

In order to maintain robotic manipulators at a high level of performance, their controllers should be able to address nonlinearities in the closed-loop system, such as input nonlinearities. Meanwhile, computational efficiency is also required for real-time implementation. In this paper, an unknown input Bouc–Wen hysteresis control problem is investigated for robotic manipulators using adaptive control and a dynamical gain-based approach. The dynamics of hysteresis are modeled as an additional control unit in the closed-loop system and are integrated with the robotic manipulators. Two adaptive parameters are developed for improving the computational efficiency of the proposed control scheme, based on which the outputs of robotic manipulators are driven to track desired trajectories. Lyapunov theory is adopted to prove the effectiveness of the proposed method. Moreover, the tracking error is improved from ultimately bounded to asymptotic tracking compared to most of the existing results. This is of important significance to improve the control quality of robotic manipulators with unknown input Bouc–Wen hysteresis. Numerical examples including fixed-point and trajectory controls are provided to show the validity of our method.

show abstract

Section: Discussionmentioning

confidence: 99%

Computational Efficiency-Based Adaptive Tracking Control for Robotic Manipulators with Unknown Input Bouc–Wen Hysteresis

Xie

Lai

2019

Sensors

View full text Add to dashboard Cite

show abstract

“…gives us the possibility to further decompose it into signal and noise subspace. This is done by selecting L eigen values k ðkÞ l per bin k. As used in [40], this can be a fixed number L or be variable and computed with methods such as SORTE introduced in [41]. The case of a first-order surround signal allows the estimation of a maximum of two directions per frequency bin as it is the case with HARPEX [6].…”

Section: Single-perspective Doa Mapmentioning

confidence: 99%

Particle-filter tracking of sounds for frequency-independent 3D audio rendering from distributed B-format recordings

Blochberger

Zotter

2021

Acta Acust.

View full text Add to dashboard Cite

Six-Degree-of-Freedom (6DoF) audio rendering interactively synthesizes spatial audio signals for a variable listener perspective based on surround recordings taken at multiple perspectives distributed across the listening area in the acoustic scene. Methods that rely on recording-implicit directional information and interpolate the listener perspective without the attempt of localizing and extracting sounds often yield high audio quality, but are limited in spatial definition. Methods that perform sound localization, extraction, and rendering typically operate in the time-frequency domain and risk introducing artifacts such as musical noise. We propose to take advantage of the rich spatial information recorded in the broadband time-domain signals of the multitude of distributed first-order (B-format) recording perspectives. Broadband time-variant signal extraction retrieving direct signals and leaving residuals to approximate diffuse and spacious sounds is less of a quality risk, and likewise is the broadband re-encoding to enhance spatial definition of both signal types. To detect and track direct sound objects in this process, we combine the directional data recorded at the single perspectives into a volumetric multi-perspective activity map for particle-filter tracking. Our technical and perceptual evaluation confirms that this kind of processing enhances the otherwise limited spatial definition of direct-sound objects of other broadband but signal-independent virtual loudspeaker object (VLO) or Vector-Based Intensity Panning (VBIP) interpolation approaches.

show abstract

“…In Figure 7 , we try to consider the targets number detection performance under several different sensor array configurations. In this simulation, the second order statistic of the eigenvalues (SORTE) algorithm [ 49 ] is adopted, which is an eigenvalue-based strategy. The all parameters setting is the same as the previous example, that is to say, the targets number

that needs to be detected.…”

Section: Numerical Simulationmentioning

confidence: 99%

Degree-of-Freedom Strengthened Cascade Array for DOD-DOA Estimation in MIMO Array Systems

Yao

Zhi

Zhang

et al. 2018

Sensors

View full text Add to dashboard Cite

In spatial spectrum estimation, difference co-array can provide extra degrees-of-freedom (DOFs) for promoting parameter identifiability and parameter estimation accuracy. For the sake of acquiring as more DOFs as possible with a given number of physical sensors, we herein design a novel sensor array geometry named cascade array. This structure is generated by systematically connecting a uniform linear array (ULA) and a non-uniform linear array, and can provide more DOFs than some exist array structures but less than the upper-bound indicated by minimum redundant array (MRA). We further apply this cascade array into multiple input multiple output (MIMO) array systems, and propose a novel joint direction of departure (DOD) and direction of arrival (DOA) estimation algorithm, which is based on a reduced-dimensional weighted subspace fitting technique. The algorithm is angle auto-paired and computationally efficient. Theoretical analysis and numerical simulations prove the advantages and effectiveness of the proposed array structure and the related algorithm.

show abstract

Detecting the Number of Clusters in n-Way Probabilistic Clustering

Cited by 165 publications

References 47 publications

Computational Efficiency-Based Adaptive Tracking Control for Robotic Manipulators with Unknown Input Bouc–Wen Hysteresis

Computational Efficiency-Based Adaptive Tracking Control for Robotic Manipulators with Unknown Input Bouc–Wen Hysteresis

Particle-filter tracking of sounds for frequency-independent 3D audio rendering from distributed B-format recordings

Degree-of-Freedom Strengthened Cascade Array for DOD-DOA Estimation in MIMO Array Systems

Contact Info

Product

Resources

About