arXiv:2411.01329cs.CYcs.CR2024-11被引 1

用不完整信息识别社交云中的克隆账号,提升检测准确率。

Cloned Identity Detection in Social-Sensor Clouds based on Incomplete Profiles

  • 通过用户名相似性筛选账号对,学习多视角特征表示。
  • 针对缺失值使用插补方法,融合相似度与差异度特征提升判别力。
  • 适用于真实社交平台数据,适合安全风控与反作弊场景。

我们提出一种新方法ICD-IPD,用于在非隐私敏感的不完整用户资料下有效检测社交传感器云服务提供者(即社交媒体用户)的克隆身份。该方法首先从社交媒体收集的用户账户中提取具有相似用户名或昵称的账号对;接着为每个账户学习多视角表示,并提取两类特征:账户属性特征和基于加权广义典型相关分析(WGCCA)的特征,这两类特征可能包含缺失值。为应对缺失值影响,系统采用缺失值插补器对上述特征进行补全。随后,针对先前识别出的账号对,进一步提取两类增强特征:相似性特征与差异性特征。最终,将所有特征拼接后输入轻量梯度提升机(Light Gradient Boosting Machine)分类器以检测身份克隆。我们在一个真实世界数据集上评估并对比了该方法与现有最先进的身份克隆检测方法及其他机器学习/深度学习模型。实验结果表明,该方法在精确率、召回率和F1分数上均优于现有方法。

原文摘要 · Abstract (English)

We propose a novel approach to effectively detect cloned identities of social-sensor cloud service providers (i.e. social media users) in the face of incomplete non-privacy-sensitive profile data. Named ICD-IPD, the proposed approach first extracts account pairs with similar usernames or screen names from a given set of user accounts collected from a social media. It then learns a multi-view representation associated with a given account and extracts two categories of features for every single account. These two categories of features include profile and Weighted Generalised Canonical Correlation Analysis (WGCCA)-based features that may potentially contain missing values. To counter the impact of such missing values, a missing value imputer will next impute the missing values of the aforementioned profile and WGCCA-based features. After that, the proposed approach further extracts two categories of augmented features for each account pair identified previously, namely, 1) similarity and 2) differences-based features. Finally, these features are concatenated and fed into a Light Gradient Boosting Machine classifier to detect identity cloning. We evaluated and compared the proposed approach against the existing state-of-the-art identity cloning approaches and other machine or deep learning models atop a real-world dataset. The experimental results show that the proposed approach outperforms the state-of-the-art approaches and models in terms of Precision, Recall and F1-score.

身份检测社交云缺失值处理克隆账号

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