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Retrieval-augmented generation (RAG) enhances large language models with external knowledge, and tree-based RAG organizes documents into hierarchical indexes to support queries at multiple granularities. However, existing Tree-RAG methods…

Machine Learning · Computer Science 2026-05-04 Ziwen Zhao , Menglin Yang

Large Language Models (LLMs) excel at reasoning and generation but are inherently limited by static pretraining data, resulting in factual inaccuracies and weak adaptability to new information. Retrieval-Augmented Generation (RAG) addresses…

Computation and Language · Computer Science 2025-11-03 Qi Luo , Xiaonan Li , Yuxin Wang , Tingshuo Fan , Yuan Li , Xinchi Chen , Xipeng Qiu

Existing prompt-optimization techniques rely on local signals to update behavior, often neglecting broader and recurring patterns across tasks, leading to poor generalization; they further rely on full-prompt rewrites or unstructured…

Software Engineering · Computer Science 2026-03-24 Balaji Dinesh Gangireddi , Aniketh Garikaparthi , Manasi Patwardhan , Arman Cohan

While retrieval techniques are widely used in practice, they still face significant challenges in cross-domain scenarios. Recently, generation-augmented methods have emerged as a promising solution to this problem. These methods enhance raw…

Computation and Language · Computer Science 2025-02-18 Chaofan Li , Zheng Liu , Jianlyv Chen , Defu Lian , Yingxia Shao

Code completion is a prominent application of Large Language Models (LLMs) in software engineering. Due to the near real-time response requirements of this task, base models with small to medium-sized parameters are typically employed,…

Software Engineering · Computer Science 2025-09-18 Dongjun Yu , Xiao Yan , Zhenrui Li , Jipeng Xiao , Haochuan He , Yongda Yu , Hao Zhang , Guoping Rong , Xiaobo Huang

Although considerable efforts have been devoted to transformer-based ranking models for document search, the relevance-efficiency tradeoff remains a critical problem for ad-hoc ranking. To overcome this challenge, this paper presents BECR…

Information Retrieval · Computer Science 2022-01-07 Yingrui Yang , Yifan Qiao , Jinjin Shao , Mayuresh Anand , Xifeng Yan , Tao Yang

Deep language models learning a hierarchical representation proved to be a powerful tool for natural language processing, text mining and information retrieval. However, representations that perform well for retrieval must capture semantic…

Information Retrieval · Computer Science 2019-05-24 Tolgahan Cakaloglu , Xiaowei Xu

Standard language models generate text by selecting tokens from a fixed, finite, and standalone vocabulary. We introduce a novel method that selects context-aware phrases from a collection of supporting documents. One of the most…

Computation and Language · Computer Science 2024-03-19 Bowen Cao , Deng Cai , Leyang Cui , Xuxin Cheng , Wei Bi , Yuexian Zou , Shuming Shi

Large reasoning models (LRMs) combined with retrieval-augmented generation (RAG) have enabled deep research agents capable of multi-step reasoning with external knowledge retrieval. However, we find that existing approaches rarely…

Artificial Intelligence · Computer Science 2026-05-26 Dayoon Ko , Jihyuk Kim , Haeju Park , Sohyeon Kim , Dahyun Lee , Yongrae Jo , Gunhee Kim , Moontae Lee , Kyungjae Lee

Retrieval-Augmented Generation (RAG) is essential for integrating external knowledge into Large Language Model (LLM) outputs. While the literature on RAG is growing, it primarily focuses on systematic reviews and comparisons of new…

Computation and Language · Computer Science 2024-04-02 Matouš Eibich , Shivay Nagpal , Alexander Fred-Ojala

Automatic query reformulation is a widely utilized technology for enriching user requirements and enhancing the outcomes of code search. It can be conceptualized as a machine translation task, wherein the objective is to rephrase a given…

Software Engineering · Computer Science 2023-07-04 Yuetian Mao , Chengcheng Wan , Yuze Jiang , Xiaodong Gu

Existing retrieval-augmented code generation (RACG) methods typically use an external retrieval module to fetch semantically similar code snippets used for generating subsequent fragments. However, even for consecutive code fragments, the…

Information Retrieval · Computer Science 2025-10-10 Qian Dong , Jia Chen , Qingyao Ai , Hongning Wang , Haitao Li , Yi Wu , Yao Hu , Yiqun Liu , Shaoping Ma

Analog circuit design relies heavily on reusing existing intellectual property (IP), yet searching across heterogeneous representations such as SPICE netlists, schematics, and functional descriptions remains challenging. Existing methods…

Computer Vision and Pattern Recognition · Computer Science 2026-04-28 Yihan Wang , Lei Li , Yao Lai , Jing Wang , Yan Lu

Retrieval-augmented generation (RAG) connects large language models (LLMs) to external knowledge, but single-round retrieval is often insufficient for complex multi-hop questions. To enhance search capabilities for complex tasks, most…

Computation and Language · Computer Science 2026-05-27 Kun Chen , Qingchao Kong , Zhao Feifei , Wenji Mao

(Source) code search is widely concerned by software engineering researchers because it can improve the productivity and quality of software development. Given a functionality requirement usually described in a natural language sentence, a…

Software Engineering · Computer Science 2023-11-14 Weisong Sun , Chunrong Fang , Yifei Ge , Yuling Hu , Yuchen Chen , Quanjun Zhang , Xiuting Ge , Yang Liu , Zhenyu Chen

The global shift towards renewable energy presents unprecedented challenges for the electricity industry, making regulatory reasoning and compliance increasingly vital. Grid codes, the regulations governing grid operations, are complex and…

Artificial Intelligence · Computer Science 2025-08-19 Jinquan Shi , Yingying Cheng , Fan Zhang , Miao Jiang , Jun Lin , Yanbai Shen

One technique to improve the retrieval effectiveness of a search engine is to expand documents with terms that are related or representative of the documents' content.From the perspective of a question answering system, this might comprise…

Information Retrieval · Computer Science 2019-09-26 Rodrigo Nogueira , Wei Yang , Jimmy Lin , Kyunghyun Cho

While Large Language Models (LLMs) have revolutionized code generation, standard ``System 1'' approaches that generate solutions in a single forward pass often hit a performance ceiling on complex algorithmic tasks. Existing iterative…

Computation and Language · Computer Science 2026-04-21 Juyong Jiang , Jiasi Shen , Sunghun Kim , Kang Min Yoo , Jeonghoon Kim , Sungju Kim

Program reduction is a technique for simplifying large, failure-inducing programs into minimal reproducible test cases. Language-specific tools such as CReduce achieve strong performance by leveraging deep semantic knowledge of C/C++, but…

Software Engineering · Computer Science 2026-05-20 Qiong Feng , Xiaotian Ma , Yongqiang Tian , Wei Song , Peng Liang

This research introduces ScoreRAG, an approach to enhance the quality of automated news generation. Despite advancements in Natural Language Processing and large language models, current news generation methods often struggle with…

Computation and Language · Computer Science 2025-06-05 Pei-Yun Lin , Yen-lung Tsai