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Modern recommender systems excel at optimizing search result relevance for e-commerce platforms. While maintaining this relevance, platforms seek opportunities to maximize revenue through search result adjustments. To address the trade-off…

Information Retrieval · Computer Science 2025-04-09 Ekaterina Solodneva , Alexandra Khirianova , Aleksandr Katrutsa , Roman Loginov , Andrey Tikhanov , Egor Samosvat , Yuriy Dorn

The development of large language models (LLMs) has achieved superior performance in a range of downstream tasks, including LLM-based retrieval-augmented generation (RAG). The quality of generated content heavily relies on the usefulness of…

Computation and Language · Computer Science 2026-01-27 Fengran Mo , Zhan Su , Yuchen Hui , Jinghan Zhang , Jia Ao Sun , Zheyuan Liu , Chao Zhang , Tetsuya Sakai , Jian-Yun Nie

Scaling large recommendation systems requires advancing three major frontiers: processing longer user histories, expanding candidate sets, and increasing model capacity. While promising, transformers' computational cost scales quadratically…

Information Retrieval · Computer Science 2026-01-21 Yunjiang Jiang , Ayush Agarwal , Yang Liu , Bi Xue

In recent years, large language models (LLMs) have demonstrated significant potential in complex reasoning tasks like mathematical problem-solving. However, existing research predominantly relies on reinforcement learning (RL) frameworks…

Machine Learning · Computer Science 2026-01-12 ShaoZhen Liu , Xinting Huang , Houwen Peng , Xin Chen , Xinyang Song , Qi Li , Zhenan Sun

This paper targets e-commerce search relevance. While Large Language Models (LLMs) have demonstrated significant potential in this field, they often encounter performance bottlenecks in persistent 'corner cases' within complex industrial…

Information Retrieval · Computer Science 2026-04-29 Chen Yifei , Tian Zhixing , Wang Chenyang , Cheng Ziguang

This paper introduces AMMORE, a new dataset of 53,000 math open-response question-answer pairs from Rori, a learning platform used by students in several African countries and conducts two experiments to evaluate the use of large language…

Artificial Intelligence · Computer Science 2024-09-27 Owen Henkel , Hannah Horne-Robinson , Maria Dyshel , Nabil Ch , Baptiste Moreau-Pernet , Ralph Abood

Learning-to-Rank (LTR) is a supervised machine learning approach that constructs models specifically designed to order a set of items or documents based on their relevance or importance to a given query or context. Despite significant…

Information Retrieval · Computer Science 2026-04-17 Camilo Gomez , Pengyang Wang , Yanjie Fu

Knowledge Tracing (KT) models students' evolving knowledge states to predict future performance, serving as a foundation for personalized education. While traditional deep learning models achieve high accuracy, they often lack…

Computation and Language · Computer Science 2026-03-25 Runze Li , Kedi Chen , Guwei Feng , Mo Yu , Jun Wang , Wei Zhang

Retrieval-augmented generation (RAG) enhances large language models (LLMs) by incorporating external knowledge to generate a response within a context with improved accuracy and reduced hallucinations. However, multi-modal RAG systems face…

Machine Learning · Computer Science 2025-01-09 Matin Mortaheb , Mohammad A. Amir Khojastepour , Srimat T. Chakradhar , Sennur Ulukus

Retrieval-augmented generation (RAG) has revitalized Large Language Models (LLMs) by injecting non-parametric factual knowledge. Compared with long-context LLMs, RAG is considered an effective summarization tool in a more concise and…

Computation and Language · Computer Science 2025-05-30 Haozhen Zhang , Tao Feng , Jiaxuan You

Retrieval augmented generation has emerged as an effective method to enhance large language model performance. This approach typically relies on an internal retrieval module that uses various indexing mechanisms to manage a static…

Information Retrieval · Computer Science 2024-12-31 Guangxin He , Zonghong Dai , Jiangcheng Zhu , Binqiang Zhao , Qicheng Hu , Chenyue Li , You Peng , Chen Wang , Binhang Yuan

Conditional story generation is significant in human-machine interaction, particularly in producing stories with complex plots. While Large language models (LLMs) perform well on multiple NLP tasks, including story generation, it is…

Computation and Language · Computer Science 2023-10-25 Zhihua Wen , Zhiliang Tian , Wei Wu , Yuxin Yang , Yanqi Shi , Zhen Huang , Dongsheng Li

Query-product relevance prediction is fundamental to e-commerce search and has become even more critical in the era of AI-powered shopping, where semantic understanding and complex reasoning directly shape the user experience and business…

Information Retrieval · Computer Science 2026-01-27 Jianhui Yang , Yiming Jin , Pengkun Jiao , Chenhe Dong , Zerui Huang , Shaowei Yao , Xiaojiang Zhou , Dan Ou , Haihong Tang

Learning to rank (LTR) is widely employed in web searches to prioritize pertinent webpages from retrieved content based on input queries. However, traditional LTR models encounter two principal obstacles that lead to suboptimal performance:…

Information Retrieval · Computer Science 2024-09-26 Yuchen Li , Haoyi Xiong , Linghe Kong , Jiang Bian , Shuaiqiang Wang , Guihai Chen , Dawei Yin

Despite strong performance on code generation tasks, it remains unclear whether large language models (LLMs) genuinely reason about code execution. Existing code reasoning benchmarks primarily evaluate final output correctness under a…

Software Engineering · Computer Science 2026-04-29 Jun Gao , Yun Peng , Qian Qiao , Changhai Zhou , Yuhua Zhou , Shiyang Zhang , Shichao Weng , Zhenchang Xing , Xiaoxue Ren

In recent years, training methods centered on Reinforcement Learning (RL) have markedly enhanced the reasoning and alignment performance of Large Language Models (LLMs), particularly in understanding human intents, following user…

Computation and Language · Computer Science 2025-09-23 Keliang Liu , Dingkang Yang , Ziyun Qian , Weijie Yin , Yuchi Wang , Hongsheng Li , Jun Liu , Peng Zhai , Yang Liu , Lihua Zhang

We propose a two-stage "Mine and Refine" contrastive training framework for semantic text embeddings to enhance multi-category e-commerce search retrieval. Large scale e-commerce search demands embeddings that generalize to long tail, noisy…

Information Retrieval · Computer Science 2026-02-20 Jiaqi Xi , Raghav Saboo , Luming Chen , Martin Wang , Sudeep Das

The Retrieval Augmented Generation (RAG) framework utilizes a combination of parametric knowledge and external knowledge to demonstrate state-of-the-art performance on open-domain question answering tasks. However, the RAG framework suffers…

Computation and Language · Computer Science 2024-10-25 Kiseung Kim , Jay-Yoon Lee

With the breakthroughs in large language models (LLMs), query generation techniques that expand documents and queries with related terms are becoming increasingly popular in the information retrieval field. Such techniques have been shown…

Information Retrieval · Computer Science 2025-07-16 Adam Yang , Gustavo Penha , Enrico Palumbo , Hugues Bouchard

Large Language Models (LLMs) often falter in complex reasoning tasks due to their static, parametric knowledge, leading to hallucinations and poor performance in specialized domains like mathematics. This work explores a fundamental…

Machine Learning · Computer Science 2026-02-10 Srijan Shakya , Anamaria-Roberta Hartl , Sepp Hochreiter , Korbinian Pöppel