activity
20232026
most citedOpenRAG: Optimizing RAG End-to-End via In-Context Retrieval Learning

1 citations · 2 across the 14 of their papers we have counts for

collaborators

14 papers

cs.AI2026

Dear Algo: A Precision-First Agentic Intent Layer for Unified Search and Recommendation

Rui Wang, Jiazhou Wang, Zheng Wei +16

Search and recommendation serve a shared discovery objective but encode intent differently. We study this boundary through Dear Algo on Threads, a deployed product where open-ended…

cs.AI2026

CMI-Mem: Toward Generalizable Long-Term Memory Management via CMI-Augmented Reinforcement Learning

Yubo Wang, Qiuyu Zhao, Zenghui Sun +6

Memory Manager models are pivotal in agent systems. Existing reinforcement-learning methods commonly use LLM-judged synthetic question-answer (QA) pairs: this provides useful downs…

cs.IR2026

Memory Layer: Train the In-Model Cache for Recommendation Models

Liangyuan Na, Gufan Yin, Yixin Bao +19

Early ranking stages in recommendation systems precompute item embeddings and cache them in-model for scoring within strict latency constraints. Because this cache exists only at s…

cs.AI2026★ 1 cited

When AI reviews science: Can we trust the referee?

Jialiang Wang, Yuchen Liu, Hang Xu +7

The volume of scientific submissions continues to climb, outpacing the capacity of qualified human referees and stretching editorial timelines. At the same time, modern large langu…

cs.IR2026

Pailitao-VL: Unified Embedding and Reranker for Real-Time Multi-Modal Industrial Search

Lei Chen, Chen Ju, Xu Chen +13

In this work, we presented Pailitao-VL, a comprehensive multi-modal retrieval system engineered for high-precision, real-time industrial search. We here address three critical chal…

cs.DB2026

RAC: Relation-Aware Cache Replacement for Large Language Models

Yuchong Wu, Zihuan Xu, Wangze Ni +5

The scaling of Large Language Model (LLM) services faces significant cost and latency challenges, making effective caching under tight capacity crucial. Existing cache replacement…

cs.IR2026

Rethinking ANN-based Retrieval: Multifaceted Learnable Index for Large-scale Recommendation System

Jiang Zhang, Yubo Wang, Wei Chang +14

Approximate nearest neighbor (ANN) search is widely used in the retrieval stage of large-scale recommendation systems. In this stage, candidate items are indexed using their learne…

cs.IR2025

SilverTorch: A Unified Model-based System to Democratize Large-Scale Recommendation on GPUs

Bi Xue, Hong Wu, Lei Chen +29

Serving deep learning based recommendation models (DLRM) at scale is challenging. Existing approaches rely on dedicated ANN indexing and filtering services on CPUs, suffering from…

cs.CL2025

Optimizing Retrieval for RAG via Reinforcement Learning

Jiawei Zhou, Lei Chen

As retrieval-augmented generation (RAG) becomes more widespread, the role of retrieval is shifting from retrieving information for human browsing to retrieving context for AI reaso…

cs.DB2025

Interactive Text-to-SQL via Expected Information Gain for Disambiguation

Luyu Qiu, Jianing Li, Chi Su +1

Relational databases are foundational to numerous domains, including business intelligence, scientific research, and enterprise systems. However, accessing and analyzing structured…

cs.CL2025★ 1 cited

OpenRAG: Optimizing RAG End-to-End via In-Context Retrieval Learning

Jiawei Zhou, Lei Chen

In this paper, we analyze and empirically show that the learned relevance for conventional information retrieval (IR) scenarios may be inconsistent in retrieval-augmented generatio…

cs.LG2024

SMARTCAL: An Approach to Self-Aware Tool-Use Evaluation and Calibration

Yuanhao Shen, Xiaodan Zhu, Lei Chen

The tool-use ability of Large Language Models (LLMs) has a profound impact on a wide range of industrial applications. However, LLMs' self-control and calibration capability in app…

cs.CL2024

Semi-Parametric Retrieval via Binary Bag-of-Tokens Index

Jiawei Zhou, Li Dong, Furu Wei +1

Information retrieval has transitioned from standalone systems into essential components across broader applications, with indexing efficiency, cost-effectiveness, and freshness be…

cs.CL2023

Towards a Unified Conversational Recommendation System: Multi-task Learning via Contextualized Knowledge Distillation

Yeongseo Jung, Eunseo Jung, Lei Chen

In Conversational Recommendation System (CRS), an agent is asked to recommend a set of items to users within natural language conversations. To address the need for both conversati…