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In this paper, geometric optical models are proposed that can accurately estimate the distances of object planes in a light field image. Treating an arbitrary point on an object plane as an off-axis point light source, the single-point-light-source model, which consists of two relaying models, is established to describe the propagation of light rays from the off-axis point light sources to the image...
Model-free reinforcement learning algorithms based on POMDP has been devised and adopted for many years. The complexity of the environment where the agent works determines the necessity of dealing with the whole observation space. Therefore, instance-based learning methods have been put forward. NSM, USM and U-Tree algorithms can present the whole observation space as instance chains, which are very...
In this paper, we propose a principled framework for pornographic image recognition. Specifically, we present our definition of pornographic images, which characterizes the pornographic contents in images as the exposure of private body parts. As the private body parts often lie in local image regions, we model each image as a bag of local image patches (instances), and assume that for each pornographic...
An evaluation index system including three aspects and ten indexes is established. For the scientific development of oilfield enterprise, optimal selection of science & technology projects has great significance and which are mostly uncertain. Based on the presentation of interval number of indexes, the interval number sorting model, TOPS IS model and projection model, optimal projects selection...
Thanks to years of research and development, current peer-to-peer (P2P) networks are anything but a homogeneous system from a protocol perspective. Specifically, even for the same P2P system (e.g., BitTorrent), a large number of protocol variants have been designed based on game theoretic considerations with the objective to gain performance advantages. We envision that such variants could be deployed...
In connection with the problem which is difficult to be accurately assess the present health status of the aircraft hydraulic system, in this paper, a gray cluster analysis method has been put forward and used to comprehensively assess the health status of the aircraft hydraulic system. Firstly, according to the expertise to rate for the key components of the aircraft hydraulic system. Then it uses...
Internet of Things (IoT) is coming into birth as pervasive hand-held devices, Radio Frequency IDentification (RFID), and embedded sensors connect to the Internet. IoT enables objects to interact and cooperate with each other anytime and anywhere. Owing to the new challenges imposed by IoT — search locality and real-time, searching in IoT is challenging. To explore what way is appropriate to satisfy...
In this paper, we study the problem of discovering multiple resource holders and how to evaluate a node's satisfaction in query incentive networks. Utilizing an acyclic tree, we show that query propagation has a nature of exponential start, polynomial growth, and eventually becoming a constant. We model the query propagation as an extensive game, obtain nodes' greedy behaviors from Nash equilibrium...
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