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43401.统计问题的算法
[信息传输、软件和信息技术服务业] [2013-11-20]
The increasing size of our datasets|and perhaps more importantly, the increasing complexity of the underlying distributions that we hope to understand|are exposing issues that seem to demand computational consideration. In this dissertation, we apply the computational perspective to three basic statistical questions which underlie and abstract several of the challenges encountered in the analysis of today's large datasets.
关键词：概率；统计数据；算法；大型数据集
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43402.面向多核的自动调谐稀疏矩阵-向量乘法
[信息传输、软件和信息技术服务业] [2013-11-20]
Sparse matrix-vector multiplication (SpMV) is an important kernel in scientific and engineering computing. Straightforward parallel implementations of SpMV often perform poorly, and with the increasing variety of architectural features in multicore processors, it is getting more difficult to determine the sparse matrix data structure and corresponding SpMV implementation that optimize performance. In this paper we present pOSKI, an autotuning system for SpMV that automatically searches over a large set of possible data structures and implementations to optimize SpMV performance on multicore platforms. pOSKI explores a design space that depends on both the nonzero pattern of the sparse matrix, typically not known until run-time, and the architecture, which is explored off-line as much as possible, in order to reduce tuning time. We demonstrate significant performance improvements compared to previous serial and parallel implementations, and compare performance to upper bounds based on architectural models.
关键词：工程计算；稀疏矩阵；向量乘法；多核处理器；数据结构
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43403.众包自动全景技术
[信息传输、软件和信息技术服务业] [2013-11-20]
we design a system which consists of a client-side mobile application to collect photos and a server-side pipeline for crowdsourcing. The client-side mobile application provides a user interface for smart phone users to take, upload, manipulate and save their photos. The server-side automated pipeline is built on Amazon’s Mechanical Turk platform to generate masks from online crowd workers for pictures uploaded by application users.
关键词：众包；自动全景；转描机技术；移动应用程序；图片处理
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43404.社会数据分析的工具和战略
[信息传输、软件和信息技术服务业] [2013-11-20]
We examine how analysis tools can be tailored to scaffold novice users into the process of data analysis, encouraging participation and understanding while contributing valuable local insights. Finally, we explore mechanisms for scaling and parallelizing data analysis, even in the absence of a dedicated community or team of analysts. We investigate how individual analysts can crowdsource pieces of social data analysis tasks using paid workers in order to leverage the collective effort of many participants. We demonstrate how large groups of workers can perform cognitively complex tasks like generating and rating hypotheses, and provide tools to help analysts manage the results of this process. These tools and strategies, along with our evaluations of them, highlight the potential of social data analysis in a variety of settings with different kinds of stakeholders. Moreover, our findings suggest leverage points for future social data analysis systems.
关键词：数据分析；定制工具；策略；认知复杂任务
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43405.移动健康监控：葡萄糖智能解决方案
[信息传输、软件和信息技术服务业,专用设备制造业] [2013-11-20]
We build mobile healthcare applications o help diabetics better monitor their condition, save healthcare cost and improve the quality of ife. Among the solutions we investigated was a prediction algorithm that estimates how a person's lucose levels will change based on speci c food and exercise inputs. Another solution was a recom- endation system that suggests diabetic-friendly food options when a person shops for groceries or ats at a restaurant.
关键词：血糖水平；糖尿病；移动医疗；医疗器械；移动应用
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43406.Web应用程序安全政策的分析和执行
[信息传输、软件和信息技术服务业] [2013-11-20]
Web applications are generally more exposed to untrusted user content than traditional applications. Thus, web applications face a variety of new and unique threats, especially that of content injection. One method for preventing these types of attacks is web application security policies. These policies specify the behavior or structure of the web application. The goal of this work is twofold. First, we aim to understand how security policies and their systems are currently applied to web applications. Second, we aim to advance the mechanisms used to apply policies to web applications. We focus on the first part through two studies, examining two classes of current web application security policies. We focus on the second part by studying and working towards two new ways of applying policies. These areas will advance the state of the art in understanding and building web application security policies and provide a foundation for future work in securing web applications.
关键词：Web应用程序；安全政策；用户；威胁
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43407.剩余的替换策略，提高S-步骤Krylov子空间方法达到最大精度
[信息传输、软件和信息技术服务业] [2013-11-20]
Recent results have demonstrated the performance bene ts of communication- avoiding Krylov subspace methods, variants which use blocking strategies to perform O(s) com- putation steps of the algorithm for each communication step. This allows an O(s) reduction in total communication cost, which can lead to signi cant speedups on modern computer architectures. De- spite potential performance bene ts, stability of these variants has been an obstacle to their use in practice.
关键词：Krylov子空间方法；剩余更换；数值稳定；迭代求解；稀疏矩阵
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43408.HydraScope：墙壁大小显示屏的交互应用
[计算机、通信和其他电子设备制造业,信息传输、软件和信息技术服务业] [2013-11-19]
This paper focuses on the design and implementation of one of the applications for HydraScope. The wall search application enables users to have a big picture of the search results and automatically open the links for users. A user study with ten participants reveals that the searching becomes more efficient by using HydraScope’s search application.
关键词：高分辨率的墙大小的显示屏；智能手机；微软体感控制器；触摸屏设备；远程控制；搜索服务器；应用程序
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43409.使用无线传感器网络进行插座电源监测
[信息传输、软件和信息技术服务业] [2013-11-19]
This paper will provide an overview for the shortcomings of such attempts such as: cost, ease of integration (as well as being noninvasive), and functionality. Our system is one that implements these features by taking advantage of several new technologies, including energy harvesting techniques and innovative low-power wireless protocols and hardware.
关键词：无线传感器网络；电源监测；能量收集
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43410.脉冲读取的移动应用
[专用设备制造业,计算机、通信和其他电子设备制造业,信息传输、软件和信息技术服务业] [2013-11-19]
The Dr. Chi capstone project team created the mobile application Dr. Chi. This application contains a program on the iOS platform and a sensor gadget which implements pulse reading as in Chinese medicine. Through measuring, storing and analyzing the heart pulse data, this application can give users instructive suggestions on stress management. We selected and optimized the sensor component for the sensor gadget by studying numbers of different kinds of sensors to improve the sensor precision.
关键词：智能手机；监测和诊断；应用程序；心脏脉冲；嵌入式传感器；脉冲；医疗器械
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