arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2001.10581cs.SIcs.AIcs.CY
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Facebook Ads Monitor:Facebook政治广告的独立审计系统

Facebook Ads Monitor: An Independent Auditing System for Political Ads on Facebook

Univ. Federal de Mato Grosso do Sul(南马托格罗索联邦大学);Univ. Estadual do Sudoeste da Bahia(巴伊亚西南州立大学);Univ. Grenoble Alpes(格勒诺布尔阿尔卑斯大学);CNRS(法国国家科学研究中心);Grenoble INP(格勒诺布尔国立理工学院);LIG(格勒诺布尔信息学实验室);Universidade Federal de Minas Gerais(米纳斯吉拉斯联邦大学)

Márcio Silva, Lucas Santos de Oliveira, Athanasios Andreou, Pedro Olmo Vaz de Melo, Oana Goga, Fabrício Benevenuto

摘要:

2016年美国总统大选的标志是Facebook上滥用定向广告。出于对2018年巴西大选中出现类似滥用行为风险的担忧,我们设计并部署了一个独立的审计系统来监控巴西Facebook上的政治广告。为了做到这一点,我们首先调整了一个浏览器插件,从使用Facebook的志愿者的时间轴收集广告。我们成功说服了2000多名志愿者来帮助我们的项目并安装我们的工具。然后,我们使用卷积神经网络(CNN)来检测使用词嵌入的政治Facebook广告。为了评估我们的方法,我们手动将10k广告的数据汇集标记为政治或非政治,然后通过将其与经典的监督机器学习方法进行比较,对所提出的识别政治广告的方法进行深入评估。最后,我们部署了一个真实的系统,显示与政治相关的广告。我们注意到,并非我们检测到的所有政治广告都出现在Facebook广告库中的政治广告中。我们的研究结果强调了宣布政治广告的执行机制的重要性和独立审计平台的必要性。

英文摘要:

The 2016 United States presidential election was marked by the abuse of targeted advertising on Facebook. Concerned with the risk of the same kind of abuse to happen in the 2018 Brazilian elections, we designed and deployed an independent auditing system to monitor political ads on Facebook in Brazil. To do that we first adapted a browser plugin to gather ads from the timeline of volunteers using Facebook. We managed to convince more than 2000 volunteers to help our project and install our tool. Then, we use a Convolution Neural Network (CNN) to detect political Facebook ads using word embeddings. To evaluate our approach, we manually label a data collection of 10k ads as political or non-political and then we provide an in-depth evaluation of proposed approach for identifying political ads by comparing it with classic supervised machine learning methods. Finally, we deployed a real system that shows the ads identified as related to politics. We noticed that not all political ads we detected were present in the Facebook Ad Library for political ads. Our results emphasize the importance of enforcement mechanisms for declaring political ads and the need for independent auditing platforms.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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