NRand‐K: Minimizing the impact of location obfuscation in spatial analysis

Zurbarán Mayra; Wightman Pedro; Brovelli Maria; Oxoli Daniele; Iliffe Mark; Jimeno Miguel; Salazar Augusto

摘要

Abstract >Location privacy, or geoprivacy, is critical to secure users’ privacy in context‐aware applications. Location‐based services pose privacy risks for users, due to the inferences that could be made about them from their location information and the potential misuse of this data by service providers or third‐party companies. A common solution is to apply masking or location obfuscation, which degrades location information quality while keeping a geographic coordinate structure. However, there is a trade‐off between privacy, quality of service, and quality of information, the last one being a valuable asset for companies. NRand is a location privacy mechanism with obfuscation capabilities and resistance against filtering attacks. In order to minimize the impact on location information quality, NRand‐K has been introduced. This algorithm is designed for use when releasing location information to third parties or as open data with privacy concerns. To assess the impact of location obfuscation on exploratory spatial data analysis (ESDA), a comparison is performed between obfuscated data with NRand, NRand‐K, and unaltered data. For the experiments, geolocated tweets collected during the Central Italy 2016 earthquake are used. Results show that NRand‐K reduces the impact on ESDA, where inferences were similar to those obtained with the unaltered data. </abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><Abstract Type =“main”XML：ID =“TGIS12462-ABS-ABS-ABS-0001”XML：Lang =“en”> <标题类型=“main”>抽象</ title> >位置隐私或地理困境是至关重要的在上下文中保护用户的隐私。基于位置的服务为用户构成隐私风险，因为可以从他们的位置信息和服务提供商或第三方公司滥用这些数据的推断，因此可以提高推断。共同的解决方案是应用屏蔽或位置混淆，其在保持地理坐标结构的同时降低定位信息质量。但是，在隐私，服务质量和信息质量之间存在权衡，最后一个是公司的宝贵资产。 Nrand是具有混淆功能和抵抗过滤攻击的位置隐私机制。为了最小化对位置信息质量的影响，已经引入了Nrand-k。该算法设计用于将位置信息释放到第三方或作为具有隐私问题的开放数据。为了评估位置混淆对探索性空间数据分析（ESDA）的影响，在使用Nrand，Nrand-k和未改变数据的混淆数据之间进行比较。对于实验，使用了意大利中部地震期间收集的Geolocated Tweets。结果表明，Nrand-k降低了对ESDA的影响，推论与未替换数据获得的影响相似。</ p> </摘要> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-31674/'>《Transactions in GIS: TG》</a> <b style="margin: 0 2px;">|</b><span>2018年第5期</span><b style="margin: 0 2px;">|</b><span>共18页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Zurbarán Mayra&option=202" target="_blank" rel="nofollow">Zurbarán Mayra;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Wightman Pedro&option=202" target="_blank" rel="nofollow">Wightman Pedro;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Brovelli Maria&option=202" target="_blank" rel="nofollow">Brovelli Maria;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Oxoli Daniele&option=202" target="_blank" rel="nofollow">Oxoli Daniele;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Iliffe Mark&option=202" target="_blank" rel="nofollow">Iliffe Mark;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Jimeno Miguel&option=202" target="_blank" rel="nofollow">Jimeno Miguel;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Salazar Augusto&option=202" target="_blank" rel="nofollow">Salazar Augusto;</a> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> <p>Department of Systems EngineeringUniversidad del NorteBarranquilla Atlántico Colombia;</p> <p>Department of Systems EngineeringUniversidad del NorteBarranquilla Atlántico Colombia;</p> <p>Department of Civil and Environmental EngineeringPolitecnico di MilanoMilan Italy;</p> <p>Department of Civil and Environmental EngineeringPolitecnico di MilanoMilan Italy;</p> <p>N‐LABUniversity of NottinghamNottingham UK;</p> <p>Department of Systems EngineeringUniversidad del NorteBarranquilla Atlántico Colombia;</p> <p>Department of Systems EngineeringUniversidad del NorteBarranquilla Atlántico Colombia;</p> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/4940.html" title="测绘数据库与信息系统">测绘数据库与信息系统;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> </p> </li> </ul> </div> </div> <div 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