共查询到19条相似文献,搜索用时 353 毫秒
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面向人脸验证的可迁移对抗样本生成方法 总被引:1,自引:0,他引:1
在人脸识别模型的人脸验证任务中,传统的对抗攻击方法无法快速生成真实自然的对抗样本,且对单模型的白盒攻击迁移到其他人脸识别模型上时攻击效果欠佳。该文提出一种基于生成对抗网络的可迁移对抗样本生成方法TAdvFace。TAdvFace采用注意力生成器提高面部特征的提取能力,利用高斯滤波操作提高对抗样本的平滑度,并用自动调整策略调节身份判别损失权重,能够根据不同的人脸图像快速地生成高质量可迁移的对抗样本。实验结果表明,TAdvFace通过单模型的白盒训练,生成的对抗样本能够在多种人脸识别模型和商业API模型上都取得较好的攻击效果,拥有较好的迁移性。 相似文献
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为实现快速的3D交互展示内容制作,利用WebGL图像引擎设计了基于互联网的快速3D内容展示创作平台。互联网创作平台的主要3D功能包括多媒体内容导入和关联、3D模型配置、3D动画自动生成、画笔地图绘制等。互联网创作平台利用WEB服务器和PHP,支持瘦客户端的3D内容创作和HTML应用生成。经本项目联合参与单位的实际应用,交互动画设计师在没有程序员参与的条件下能够顺利完成交互3D内容创作和3D动画内容快速生成。本创作平台为互联网3D展览展示提供了简便的设计方案和新的设计模式。最后,在调整本创作平台的部分功能后能够满足城市紧急救援方案3D交互推演和3D动画生成、战术方案3D交互推演和3D动画生成、互联网3D虚拟展馆制作、室内外建筑展示内容制作。 相似文献
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特定领域建模(Domain-Specific Modeling ,DSM )提高了软件的抽象水平,DSM 用模型表示用户的需求,然后通过生成器,直接把模型中的信息提取出来并转换成代码,实现了代码的自动生成。研究了特定领域建模语言、生成器和领域框架,总结了M etaEdit+下实现DSM的一般过程及其使用的相关技术,并介绍了代码生成的具体过程。基于M etaEdit+,实现了电子万年历的元建模和领域建模,并通过提出的深度优先遍历的代码生成算法,实现了电子万年历代码的自动生成。 相似文献
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基于MDA/PIM的组件自动生成技术的研究 总被引:2,自引:2,他引:0
分析了传统模型驱动构架(MDA)PIM层的UML模型缺乏严格的语义而不能自动转换到PSM层的不足,并针对目前基于MDA的组件开发过程中存在的问题,利用了基于组件的开发(CBD)和MDA的优势特征,结合两者对软件的复用性和自动生成的特点,提出了把UML profile应用到MDA/PIM层的组件设计中,从而实现了UML profile构建的PIM层模型自动转换到PSM层模型的需求,并在最后生成可执行的代码,达到了组件自动生成的目的. 相似文献
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针对传统的紧耦合Web系统模式存在的问题,提出一种符合JavaEE规范的、松散耦合的多层分布式系统,利用XML来分离UI层、控制层、业务逻辑层和数据持久层。系统配置、数据传输以及层次之间的接口全部由XML来实现,并将其应用到Web应用系统——XJW中。该框架的优点是减轻了部署人员工作难度以及降低了网络开销。 相似文献
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Gadient A.J. Thomas D.E. 《Very Large Scale Integration (VLSI) Systems, IEEE Transactions on》1993,1(3):328-341
In this paper, we present a novel model of CAD tool control that can be used in the constraint-directed control of high-level synthesis tools. To enable this control we introduce the concept of a design space reasoning mechanism. We formally describe a statistical based, machine learning process that automatically generates the tool control knowledge necessary to drive the design space reasoning mechanism. The representation of this tool control knowledge in the form of a fuzzy, linear differential, qualitative model is described. Finally, the experimental results obtained using the Magellan system are presented 相似文献
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V. Székely M. Rencz A. Poppe B. Courtois 《Analog Integrated Circuits and Signal Processing》2001,29(1-2):49-59
This paper presents a tool and a method for the generation of reduced order thermal models, in order to assure modeling the effect of the package on the thermal behavior of the packaged device. The method is generic, and can be based either on the simulated or on the measured thermal transient response of the real packages. It is based on the generation of the time constant density spectrum of the thermal response function, from which we automatically generate a reduced order thermal model in the form of an RC ladder network model. Beyond presenting the generic methodology experimental results are also presented, based both on the simulation and measurement of MEMS elements and packages. 相似文献
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大气气溶胶飞行时间激光质谱仪实时数据采集处理系统 总被引:3,自引:1,他引:2
自行研制了一台大气气溶胶飞行时间激光质谱仪(ATOFLMS),它可以实时地对气溶胶单粒子进行物理和化学特性分析,是大气气溶胶研究和测量的一个有力工具.该仪器在运行过程中将产生海量的实验数据,对这些数据的实时、自动处理、提取有价值的信息是整机系统的关键之一.我们基于面向对象的技术为它开发了配套计算机软件MS-ACS,该软件能够自动地实现气溶胶单粒子的粒径和化学成分信息的实时采集、分析和存储功能. 相似文献
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The SURE computer program, a reliability-analysis tool for ultrareliable computer-system architectures, provides an efficient means for computing reasonably accurate upper and lower bounds for the death state probabilities of a large class of semi-Markov models. Once a semi-Markov model is described using a simple input language, SURE automatically computes the upper and lower bounds on the probability of system failure. A parameter of the model can be specified as a variable over a range of values, thus directing SURE to perform a sensitivity analysis automatically. The program provides a rapid computational capability for semi-Markov models useful for describing the fault-handling behavior of fault-tolerant computer systems. The only modeling restriction imposed by the program is that the nonexponential recovery transitions must be fast in comparison to the mission time. The SURE reliability-analysis method uses a fast bounding theorem based on means and variances and yields upper and lower bounds on the probability of system failure. Techniques have been developed to enable SURE to solve models with loops and calculate the operational-state probabilities. The computation is extremely fast, and large state-spaces can be directly solved; a pruning technique enables SURE to process extremely large models 相似文献
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根据软件工程双语教学实际需求,利用国际化技术开发了基于JavaEE规范的软件工程双语教学平台。在开发过程中把自主版权的ppt格式课件利用iSpring或Macromedia Flash Paper软件转换为flash格式课件。或是把部分教学资源直接制作为Flash动画后发布到应用服务器,用户下载后只能浏览不能任意修改,有效的保护了数字教学资源的版权和原创性。该网站提供集语音视频教学、自主学习、在线测试、交流互动等功能于一体的网络版多媒体教学资源共享平台,为软件工程课程双语教学提供强有力的支持。 相似文献
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Performance assessment of embedded HW/SW systems built with various types of VLSI components, i.e. heterogeneous multi-processor architectures, is important to help the development of complex real-time applications. To design such a tool, two issues must be solved: the gathering of relevant information simultaneously on several components without disturbing the application behavior, display of the performance results in a way that can be easily interpreted by designers. This paper presents a significant solution for the two above issues. We first describe what the goal for designers is and what kind of applications are concerned. Then we describe the principle of collecting an event trace and the technique to evaluate the selected performance indexes. The monitoring technique, based on a specific ASIC, is non-intrusive and allows our tool to capture real-time event occurrences from software tasks, and even from hardware functions implemented in ASICs. Each event is automatically time-stamped, collected and processed in real-time to evaluate the performance indexes selected by the designer. We also describe the display tool which clearly shows the results to the designer according to different representations. This technique and the associate real-time performance analyzer are integrated in a complete development process based on the MCSE methodology. 相似文献
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薛振伟 《太赫兹科学与电子信息学报》2012,10(2):231-236
JavaEE Web应用系统的复杂性极容易导致性能问题,其中服务器端是性能问题产生的主要根源。针对服务器环节,基于"由外而内,由表及里,层层深入"的基本原则,提出一种系统化的性能诊断思路和流程,从用户视角、资源视角和组件视角逐层深入,分别从用户事务、系统资源、Web资源和页面组件4个层次阐述性能诊断的策略,为同类系统的性能诊断工作提供参考。 相似文献