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DoD has defined three levels of data fusion for network centric warfare (NCW). Level 1 data fusion combines data from single or multiple sensors and sources to provide the best estimate of objects and events in the battlespace. Level 2 data fusion focuses on situation assessment. Level 3 data fusion is threat assessment. To facilitate situation assessment, we investigate the problem of jointly classifying...
When apply Q-learning to complex real-world problems, the learning process is long enough to make this method unpractical. The major cause is Q-learning requires the agent to visit every state-action transition infinitely often for making Q value convergent. We propose a state-cluster based Q-learning method to accelerate convergence and shorten learning process. This method creates the state-cluster...
In this paper, some existing inner bounds of multiple description problem are investigated. We prove that the El Gamal-Cover region is a subset of the Zhang-Berger (ZB) region. Furthermore, the Venkataramani-Kramer-Goyal region is equivalent to the Zhang-Berger region.
In previous studies on 4-DOF parallel mechanisms with four sub-chains, only symmetric arrangement of those four chains connected to the top plate was considered. Such symmetric shape sometimes falls into a sort of architetural singularity. This work demonstrates that an asymmetric placement of the four chains on the top platform is desired to minimize the effect of such architectural singularity....
We present an algorithm for active learning (adaptive selection of training data) within the context of semi-supervised multi-task classifier design. The semi-supervised multi-task classifier exploits manifold information provided by the unlabeled data, while also leveraging relevant information across multiple data sets. The active-learning component defines which data would be most informative to...
This paper presents the utilization of the Hirschman-Herfindahl Index (HHI) within a probabilistic framework to arrive at a parametric trend indicating the possible market power in a given system. The traditional Optimal Power Flow (OPF) algorithm for obtaining the least-cost generation dispatch trend for the resources in a power system is modified to include a nonlinear constraint incorporating the...
We present a complete theoretical solution for the determination of the maximum distance between a point on the first link and a point on the last link of a serial manipulator with revolute joints. The known necessary condition for critical configurations is developed into a simple necessary and sufficient criterion for the global maximum. We use Morse-Bott theory for the squared distance function...
To hire multiple agents cooperating to solve realworld problem with large state space, a precondition is to provide an interaction medium for knowledge exchange and share among agents. We propose an interaction medium: State-Clusters, computed from the state trajectory that the agent wandered in state space. The State-Clusters of a state includes acyclic state paths from other states to this state,...
In this paper we present several strategies for multiple relay networks which are constrained by a half-duplex operation, i. e., each node either transmits or receives on a particular resource. Using the discrete memoryless multiple relay channel we present achievable rates for a multilevel partial decode-and-forward approach which generalizes previous results presented by Kramer and Khojastepour...
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