This paper studies the problem of categorical data clustering, especially for transactional data characterized by high dimensionality and large volume. Starting from a heuristic method of increasing the height-to-width ratio of the cluster histogram, we develop a novel algorithm – CLOPE, which is very fast and scalable, while being quite effective. We demonstrate the performance of our algorithm on two real world
標簽： data transactional categorical clustering
上傳時間： 2015-10-24
上傳用戶：evil
how to read a cs research paper
上傳時間： 2013-12-09
上傳用戶：songnanhua
In this paper, we provide an overview of the security concerns introduced by wireless LANs, current approaches to wireless LAN security, their limitations, and the weaknesses of various “band aid” security solutions. We conclude by describing how the ReefEdge Connect System provides a comprehensive solution to wireless LAN security.
標簽： introduced overview concerns security
上傳時間： 2015-11-02
上傳用戶：凌云御清風
This paper presents an interactive technique that produces static hairstyles by generating individual hair strands of the desired shape and color, subject to the presence of gravity and collisions. A variety of hairstyles can be generated by adjusting the wisp parameters, while the deformation is solved efficiently, accounting for the effects of gravity and collisions. Wisps are generated employing statistical approaches. As for hair deformation, we propose a method which is based on physical simulation concepts but is simplified to efficiently solve the static shape of hair. On top of the statistical wisp model and the deformation solver, a constraint-based styler is proposed to model artificial features that oppose the natural flow of hair under gravity and hair elasticity, such as a hairpin. Our technique spans a wider range of human hairstyles than previously proposed methods, and the styles generated by this technique are fairly realistic.
標簽： interactive hairstyles generating technique
上傳時間： 2013-12-20
上傳用戶：sssl
This paper introduces an affine invariant of trapezia, and the explicit constraint equation between the intrinsic matrix of a camera and the similarity invariants of a trapezium are established using the affine invariant. By this constraint, the inner parameters, motion parameters of the cameras and the similarity invariants of trapezia can be linearly determined using some prior knowledge on the cameras or the trapezia. The proposed algorithms have wide applicability since parallel lines are not rare in many scenes. Experimental results validate the proposed approaches. This work presents a unifying framework based on the parallelism constraint, and the previous methods based on the parallelograms or the parallelepipeds can be integrated into this framework. Key words: invariant parallelism constraint camera calibration 3D reconstruction
標簽： introduces constraint invariant explicit
上傳時間： 2014-01-16
上傳用戶：6546544
this paper is about software of time-limit
標簽： time-limit software paper about
上傳時間： 2013-12-05
上傳用戶：wyc199288
this paper is about computer model
標簽： computer paper about model
上傳時間： 2015-11-12
上傳用戶：edisonfather
A system simulation environment in Matlab/Simulink of RFID is constructed in this paper. Special attention is emphasized on the analog/RF circuit.Negative effects are concerned in the system model,such as phase noise of the local oscillator,TX-RX coupling,reflection of the environment, AWGN noise,DC offset,I/Q mismatch,etc.Performance of the whole system can be evaluated by changing the coding method,parameters of building blocks,and operation distance.Finally,some simulation results are presented in this paper.
標簽： environment constructed simulation Simulink
上傳時間： 2014-01-09
上傳用戶：zhangliming420
this paper talks about ofdm synchronization,hope it to be of help to evrybody
標簽： synchronization evrybody paper about
上傳時間： 2014-01-01
上傳用戶：tb_6877751
this paper talks about ofdm synchronization for selective fading channels,hope it to be of help to evrybody
標簽： synchronization selective channels fading
上傳時間： 2014-01-18
上傳用戶：fanboynet
