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Transformers have a quadratic scaling of computational complexity with input size, which limits the input context window size of large language models (LLMs) in both training and inference. Meanwhile, retrieval-augmented generation (RAG)…

计算与语言 · 计算机科学 2024-10-18 Yimin Tang , Yurong Xu , Ning Yan , Masood Mortazavi

Large-scale transformer-based language models (LMs) demonstrate impressive capabilities in open text generation. However, controlling the generated text's properties such as the topic, style, and sentiment is challenging and often requires…

计算与语言 · 计算机科学 2021-03-12 Rohola Zandie , Mohammad H. Mahoor

Retrieval-Augmented Generation (RAG) addresses limitations of large language models (LLMs) by leveraging a vector database to provide more accurate and up-to-date information. When a user submits a query, RAG executes a vector search to…

人工智能 · 计算机科学 2025-06-18 Taehee Jeong

Large Language Models (LLMs) have been integrated into recommendation systems to enhance user behavior comprehension. The Retrieval Augmented Generation (RAG) technique is further incorporated into these systems to retrieve more relevant…

信息检索 · 计算机科学 2025-02-12 Jian Xu , Sichun Luo , Xiangyu Chen , Haoming Huang , Hanxu Hou , Linqi Song

Generative models for Information Retrieval, where ranking of documents is viewed as the task of generating a query from a document's language model, were very successful in various IR tasks in the past. However, with the advent of modern…

计算与语言 · 计算机科学 2020-10-08 Cicero Nogueira dos Santos , Xiaofei Ma , Ramesh Nallapati , Zhiheng Huang , Bing Xiang

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…

信息检索 · 计算机科学 2024-12-31 Guangxin He , Zonghong Dai , Jiangcheng Zhu , Binqiang Zhao , Qicheng Hu , Chenyue Li , You Peng , Chen Wang , Binhang Yuan

Retrieval-Augmented Generation (RAG) has significantly mitigated the hallucinations of Large Language Models (LLMs) by grounding the generation with external knowledge. Recent extensions of RAG to graph-based retrieval offer a promising…

Retrieval augmented generation (RAG) has been applied in many scenarios to augment large language models (LLMs) with external documents provided by retrievers. However, a semantic gap exists between LLMs and retrievers due to differences in…

计算与语言 · 计算机科学 2024-10-31 Fuda Ye , Shuangyin Li , Yongqi Zhang , Lei Chen

Recent prompt-based text-to-speech (TTS) models can clone an unseen speaker using only a short speech prompt. They leverage a strong in-context ability to mimic the speech prompts, including speaker style, prosody, and emotion. Therefore,…

声音 · 计算机科学 2024-06-07 Jinlong Xue , Yayue Deng , Yingming Gao , Ya Li

For middle-school math students, interactive question-answering (QA) with tutors is an effective way to learn. The flexibility and emergent capabilities of generative large language models (LLMs) has led to a surge of interest in automating…

计算与语言 · 计算机科学 2023-11-14 Zachary Levonian , Chenglu Li , Wangda Zhu , Anoushka Gade , Owen Henkel , Millie-Ellen Postle , Wanli Xing

Large language models (LLMs) are very costly and inefficient to update with new information. To address this limitation, retrieval-augmented generation (RAG) has been proposed as a solution that dynamically incorporates external knowledge…

计算与语言 · 计算机科学 2025-07-10 Sezen Perçin , Xin Su , Qutub Sha Syed , Phillip Howard , Aleksei Kuvshinov , Leo Schwinn , Kay-Ulrich Scholl

Retrieving and extracting knowledge from extensive research documents and large databases presents significant challenges for researchers, students, and professionals in today's information-rich era. Existing retrieval systems, which rely…

信息检索 · 计算机科学 2025-02-06 Mohammed-Khalil Ghali , Abdelrahman Farrag , Daehan Won , Yu Jin

Retrieval-Augmented Generation (RAG) enhances Large Language Models (LLMs) by retrieving relevant memories from an external database. However, existing RAG methods typically organize all memories in a whole database, potentially limiting…

计算与语言 · 计算机科学 2024-05-28 Zheng Wang , Shu Xian Teo , Jieer Ouyang , Yongjun Xu , Wei Shi

Although large language models (LLMs) demonstrate strong text generation capabilities, they struggle in scenarios requiring access to structured knowledge bases or specific documents, limiting their effectiveness in knowledge-intensive…

计算与语言 · 计算机科学 2025-01-24 Gustavo Kuratomi , Paulo Pirozelli , Fabio G. Cozman , Sarajane M. Peres

In this paper we present a fully lexicalized grammar formalism as a particularly attractive framework for the specification of natural language grammars. We discuss in detail Feature-based, Lexicalized Tree Adjoining Grammars (FB-LTAGs), a…

cmp-lg · 计算机科学 2008-02-03 B. Srinivas , Dania Egedi , Christy Doran , Tilman Becker

Sequence generation with reinforcement learning (RL) has received significant attention recently. However, a challenge with such methods is the sparse-reward problem in the RL training process, in which a scalar guiding signal is often only…

计算与语言 · 计算机科学 2018-11-05 Ruiyi Zhang , Changyou Chen , Zhe Gan , Wenlin Wang , Liqun Chen , Dinghan Shen , Guoyin Wang , Lawrence Carin

Interest in generative Electrocardiogram-Language Models (ELMs) is growing, as they can produce textual responses conditioned on ECG signals and textual queries. Unlike traditional classifiers that output label probabilities, ELMs are more…

计算与语言 · 计算机科学 2025-10-02 Xiaoyu Song , William Han , Tony Chen , Chaojing Duan , Michael A. Rosenberg , Emerson Liu , Ding Zhao

To ensure large language models (LLMs) are used safely, one must reduce their propensity to hallucinate or to generate unacceptable answers. A simple and often used strategy is to first let the LLM generate multiple hypotheses and then…

计算与语言 · 计算机科学 2025-02-12 António Farinhas , Haau-Sing Li , André F. T. Martins

The drafting of documents in the procurement field has progressively become more complex and diverse, driven by the need to meet legal requirements, adapt to technological advancements, and address stakeholder demands. While large language…

计算与语言 · 计算机科学 2024-10-15 Yilong Zhao , Daifeng Li

Retrieval-Augmented Generation (RAG) has become a powerful paradigm for enhancing large language models (LLMs) through external knowledge retrieval. Despite its widespread attention, existing academic research predominantly focuses on…

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