arXiv AI By Syed Ali Ahmed (National University of Computer and Emerging Sciences, Karachi, Pakistan), Malaika Raza (National University of Computer and Emerging Sciences, Karachi, Pakistan), Muhammad Shoaib Siddiqui (Islamic University of Madinah, Madinah, Saudi Arabia), Muhammad Rafi (National University of Computer and Emerging Sciences, Karachi, Pakistan)

Beyond Accuracy: Centroid-Guided Contrastive Loss for Structured Fraudulent Job Posting Detection

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The paper introduces Centroid‑Guided Contrastive Loss (CGCL), a novel loss function that combines classification with dense clustering to improve fraudulent job posting detection. CGCL reshapes the latent space using a centroid‑driven top‑k push‑and‑pull mechanism, ensuring accurate decision boundaries while preserving compact clustering of similar fake posts. Experiments on the EMSCAD benchmark show that CGCL achieves state‑of‑the‑art performance.

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arXiv Machine Learning
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By Sajid Siraj, Mahnaz Hosseinzadeh, Amin Vafadarnikjoo, Shuyang Li
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Sep 4

IDSPACE: A Novel Document Generator for Reliable Evaluation of Digital Identity Verification Systems [Extended Technical Report]

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By Lulu Xie, Yancheng Wang, Kanchan Chowdhury, Rolando Garcia, Yingzhen Yang, Jia Zou