游戏产业中的迭代开发

迭代开发是一个增量式的开发习惯,其不同于传统的软件开发流程。介绍了将迭代开发应用到游戏产业的策划和编程中,使两者能互相迭代交互,十分适合现在基于组件和面向对象设计的游戏软件,能在编码、任务安排和提交上明显地改善现有的制作流程。     

广义Nekrasov矩阵的迭代判别法

证明矩阵为广义Nekrasov矩阵的充要条件,给出判定矩阵不是广义Nekrasov矩阵的迭代算法,从而使得对广义Nekrasov矩阵的判定问题在实际应用中更加简捷而有效.     

多步迭代正则化梯度法的收敛性

分析一族多步迭代正则化梯度法的收敛性.分别利用修正的后验准则和先验准则,在修正源条件下得到算法关于误差的收敛性和收敛率结果.     

On the role of user-centred evaluation in the advancement of interactive information retrieval

This paper discusses the role of user-centred evaluations as an essential method for researching interactive information retrieval. It draws mainly on the work carried out during the Clarity Project where different user-centred evaluations were run during the lifecycle of a cross-language information retrieval system. The iterative testing was not only instrumental to the development of a usable system, but it enhanced our knowledge of the potential, impact, and actual use of cross-language information retrieval technology. Indeed the role of the user evaluation was dual: by testing a specific prototype it was possible to gain a micro-view and assess the effectiveness of each component of the complex system; by cumulating the result of all the evaluations (in total 43 people were involved) it was possible to build a macro-view of how cross-language retrieval would impact on users and their tasks. By showing the richness of results that can be acquired, this paper aims at stimulating researchers into considering user-centred evaluations as a flexible, adaptable and comprehensive technique for investigating non-traditional information access systems.     

基于信号源能量模型的传感器网络追踪算法研究

比较了应用于传感器网络声源追踪定位的3种模型,其中信号源能量模型对数据处理简单,更利于节省能量。针对现有基于信号源能量模型的算法的不足,给出了一种全新的算法—梯度迭代算法,并通过仿真实验证明了其在追踪的精确度和速度方面具有明显的优势。     

An iterative computation method for interpreting and extending an analytical battery model

Battery models are of great importance to develop portable computing systems, for whether the design of low power hardware architecture or the design of battery-aware scheduling policies. In this paper, we present a physically justified iterative computing method to illustrate the discharge, recovery and charge process of Li/Li-ion batteries. The discharge and recovery processes correspond well to an existing accurate analytical battery model： R-V-W＇s analytical model, and thus interpret this model algorithmically. Our method can also extend R-V-W＇s model easily to accommodate the charge process, The work will help the system designers to grasp the characteristics of R-V-W＇s battery model and also, enable to predict the battery behavior in the charge process in a uniform way as the discharge process and the recovery process. Experiments are performed to show the accuracy of the extended model by comparing the predicted charge times with those derived from the DUALFOIL simulations. Various profiles with different combinations of battery modes were tested, The experimental results show that the extended battery model preserves high accuracy in predicting the charge behavior.     

基于全变差的超分辨率图像重建

根据低分辨率图像生成的矩阵模型,应用广义逆矩阵理论,得到高分辨率图像所在的解空间,把最小总体变差作为目标函数,应用最速下降方法求解,得到重建的高分辨率图像。实验结果表明：该方法能够提高重建图像质量,具有较好的鲁棒性。     

基于图像复原的规整化方法研究

图像降噪与图像去模糊方法研究在众多专业领域都具有重要的研究意义。去模糊问题是一个图像估计问题,处理这个问题的一般框架是规整化,本文研究了图像复原问题的典型规整化方法。