eCOM 2026

Table of Contents

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• A Bag-of-Documents Model for Query Specificity PDF
  Aritra Mandal, Daniel Tunkelang, Zhe Wu
• INSPIRE: Intent-aware Neural Sponsored Product Retrieval for E-commerce PDF
  Shasvat Desai, Hong Yao, Utkarsh Porwal, Kuang-Chih Lee
• Route, Dont Guess: Adaptive Interaction Strategy Selection for Agentic Product Search PDF
  Vinesh Gudla, Xiao Xiao, Ji Xin, Tejaswi Tenneti
• Improving Pointwise Predictions with a Pairwise Ranker PDF
  Eric Hallman
• Scalable Visual Attribute Recognition in E-Commerce Products via Automated Synthetic Label Generation PDF
  Victor Martinez, Virginia Negri, Brayan Impata, Sergio Alvarez
• To RAG or Not to RAG? Rethinking Multilingual Spelling Correction at Global Scale PDF
  Naman Jain
• Problem Formulation over Feature Engineering: Evidence from a Production Reranking System in a C2C Marketplace PDF
  Ryo Watanabe, Yusuke Shido, Ryo Tanaka, Yuki Yada, Shinya Yaginuma
• Robust HNSW Vector Retrieval under Dynamic Product Updates via Local Rewiring PDF
  Anurag Sengupta
• Product-Aware Architectures for Conversion Rate Prediction in E-Commerce Advertising PDF
  Aditya Chichani, Ameya Raul, Amey Porobo Dharwadker, Saurabh Gupta
• AutoRelAnnotator: Calibrated Model Cascades for Cost-Efficient Relevance Evaluation in Sponsored Search PDF
  Md Omar Faruk Rokon, Shasvat Desai, Hong Yao, Kuang-Chih Lee
• Scaling Dense Retrieval with LLM-Annotated Training Data: Structured Mining and Progressive Curriculum for E-Commerce Sponsored Search PDF
  Md Omar Faruk Rokon, Shasvat Desai, Jhalak Nilesh Acharya, Isha Shah, Kumar Priyam, Brahanyaa Somasundaram, Vamsee Tangirala, Minuteresa Thomas, Vivek Arora, Vijay Manchi, Hong Yao, Kuang-Chih Lee
• Unified Multi-Task Relevance Modeling for E-Commerce: Comparing Task Routing Architectures Across LLMs and Cross-Encoders PDF
  Md Omar Faruk Rokon, Jhalak Nilesh Acharya, Shasvat Desai, Hong Yao, Kuang-Chih Lee
• Agentic Prompt Optimization for E-Commerce Catalog Enrichment at Scale PDF
  Peng Gao, Athanasios N. Nikolakopoulos, Zhu Cheng, Andrea Scarinci, Umit Batur, Suleiman A. Khan
• Structured & Tiered Agentic Response Evaluation (STARe): LLM-Judge Framework for Conversational Shopping Agents PDF
  Akash Kumar Singh, Digvijay Singh Bhadouria, Flint Luu, Pierre Yves Vandenbussche, Pinchu Sabu, Sanket Thapliyal, Vikram Vishal Singh, Vishal Shivhare, Wenjia Xie
• Pekka: MLLM-based Product Representation Learning with User Engagement Signals for E-Commerce PDF
  Rui Yan, Kevin Huang, Miao Li, Zhenyuan Liu, Mina Ghashami, Michael Schlichtkrull, Miguel Arduengo, Wenliang Gao, Bella Shi, Michael Du, Fan Xia, Zhaoheng Zheng, I-Ta Lee, Minghai Chen, Yash Desai, Rana Alkhoury Maroun, Yugandhar Nanda, Weijian Han, Dongxin Liu, Santiago Villa Fernandez, Jack Wang, Guang Yang, Saurabh Gupta, Moji Solgi, Ben Schulte, Deepak Chandra, Damien Lefortier
• LoSparse: Low-dimensional Sparse Retrieval Model PDF
  Kohei Uno, Shogo Kisa, Yohei Iseki
• CaptionFuse: Training-Free Composed Product Retrieval Via VLM Intent Captioning and Weighted Embedding Fusion PDF
  Zhao Gao, Mina Metias, Mohamed Noordeen Alaudeen, Bassel Saleh
• Bottoms, Towers and Tops: Evaluating Component Interactions in Multi-Task Learning for E-Commerce PDF
  Piotr Bajger, Aleksander Wawer, Wojciech Kutak
• Marginal Expected Revenue for Jointly Ranking Auction and Fixed-Price Listings in E-Commerce Sponsored Search PDF
  Greg Kocher, Sanjana Arun