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With the growing popularity of RAG, the capabilities of embedding models are gaining increasing attention. Embedding models are primarily trained through contrastive loss learning, with negative examples being a key component. Previous work…

计算与语言 · 计算机科学 2024-08-30 Shiyu Li , Yang Tang , Shizhe Chen , Xi Chen

We investigate improving the retrieval effectiveness of embedding models through the lens of corpus-specific fine-tuning. Prior work has shown that fine-tuning with queries generated using a dataset's retrieval corpus can boost retrieval…

信息检索 · 计算机科学 2025-05-27 Manveer Singh Tamber , Suleman Kazi , Vivek Sourabh , Jimmy Lin

Automated detection of software vulnerabilities is critical for enhancing security, yet existing methods often struggle with the complexity and diversity of modern codebases. In this paper, we introduce EnStack, a novel ensemble stacking…

软件工程 · 计算机科学 2024-11-26 Shahriyar Zaman Ridoy , Md. Shazzad Hossain Shaon , Alfredo Cuzzocrea , Mst Shapna Akter

Image-Text Retrieval (ITR) is challenging in bridging visual and lingual modalities. Contrastive learning has been adopted by most prior arts. Except for limited amount of negative image-text pairs, the capability of constrastive learning…

计算机视觉与模式识别 · 计算机科学 2026-03-27 Haoran Wang , Dongliang He , Wenhao Wu , Boyang Xia , Min Yang , Fu Li , Yunlong Yu , Zhong Ji , Errui Ding , Jingdong Wang

Copy detection, which is a task to determine whether an image is a modified copy of any image in a database, is an unsolved problem. Thus, we addressed copy detection by training convolutional neural networks (CNNs) with contrastive…

计算机视觉与模式识别 · 计算机科学 2021-12-09 Shuhei Yokoo

We propose Corder, a self-supervised contrastive learning framework for source code model. Corder is designed to alleviate the need of labeled data for code retrieval and code summarization tasks. The pre-trained model of Corder can be used…

软件工程 · 计算机科学 2021-05-25 Nghi D. Q. Bui , Yijun Yu , Lingxiao Jiang

Recent advancements in deep learning have proven highly effective in medical image classification, notably within histopathology. However, noisy labels represent a critical challenge in histopathology image classification, where accurate…

计算机视觉与模式识别 · 计算机科学 2024-04-12 Lucas Dedieu , Nicolas Nerrienet , Adrien Nivaggioli , Clara Simmat , Marceau Clavel , Arnaud Gauthier , Stéphane Sockeel , Rémy Peyret

Recently, contrastive learning attracts increasing interests in neural text generation as a new solution to alleviate the exposure bias problem. It introduces a sequence-level training signal which is crucial to generation tasks that always…

计算与语言 · 计算机科学 2023-02-06 Chenxin An , Jiangtao Feng , Kai Lv , Lingpeng Kong , Xipeng Qiu , Xuanjing Huang

In this paper, we propose the CodeRetriever model, which learns the function-level code semantic representations through large-scale code-text contrastive pre-training. We adopt two contrastive learning schemes in CodeRetriever: unimodal…

计算与语言 · 计算机科学 2022-10-27 Xiaonan Li , Yeyun Gong , Yelong Shen , Xipeng Qiu , Hang Zhang , Bolun Yao , Weizhen Qi , Daxin Jiang , Weizhu Chen , Nan Duan

Contrastive learning has been successfully used for retrieval of semantically aligned sentences, but it often requires large batch sizes or careful engineering to work well. In this paper, we instead propose a generative model for learning…

计算与语言 · 计算机科学 2023-06-06 John Wieting , Jonathan H. Clark , William W. Cohen , Graham Neubig , Taylor Berg-Kirkpatrick

The performance of neural code search is significantly influenced by the quality of the training data from which the neural models are derived. A large corpus of high-quality query and code pairs is demanded to establish a precise mapping…

软件工程 · 计算机科学 2022-02-15 Zhensu Sun , Li Li , Yan Liu , Xiaoning Du , Li Li

Hierarchical semantic structures naturally exist in an image dataset, in which several semantically relevant image clusters can be further integrated into a larger cluster with coarser-grained semantics. Capturing such structures with image…

计算机视觉与模式识别 · 计算机科学 2022-05-24 Yuanfan Guo , Minghao Xu , Jiawen Li , Bingbing Ni , Xuanyu Zhu , Zhenbang Sun , Yi Xu

Graph pattern mining methods can extract informative and useful patterns from large-scale graphs and capture underlying principles through the overwhelmed information. Contrast analysis serves as a keystone in various fields and has…

社会与信息网络 · 计算机科学 2018-02-20 Jingbo Shang , Xiyao Shi , Meng Jiang , Liyuan Liu , Timothy Hanratty , Jiawei Han

Contrastive learning has become pivotal in unsupervised representation learning, with frameworks like Momentum Contrast (MoCo) effectively utilizing large negative sample sets to extract discriminative features. However, traditional…

机器学习 · 计算机科学 2025-01-29 Duy Hoang , Huy Ngo , Khoi Pham , Tri Nguyen , Gia Bao , Huy Phan

In Retrieval-Augmented Generation (RAG) tasks using Large Language Models (LLMs), the quality of retrieved information is critical to the final output. This paper introduces the IRSC benchmark for evaluating the performance of embedding…

信息检索 · 计算机科学 2024-09-27 Hai Lin , Shaoxiong Zhan , Junyou Su , Haitao Zheng , Hui Wang

This paper presents an approach to improve text embedding models through contrastive fine-tuning on small datasets augmented with expert scores. It focuses on enhancing semantic textual similarity tasks and addressing text retrieval…

计算与语言 · 计算机科学 2024-08-23 Jun Lu , David Li , Bill Ding , Yu Kang

An ideal audio retrieval system efficiently and robustly recognizes a short query snippet from an extensive database. However, the performance of well-known audio fingerprinting systems falls short at high signal distortion levels. This…

音频与语音处理 · 电气工程与系统科学 2024-11-22 Anup Singh , Kris Demuynck , Vipul Arora

Despite the substantial success of Information Retrieval (IR) in various NLP tasks, most IR systems predominantly handle queries and corpora in natural language, neglecting the domain of code retrieval. Code retrieval is critically…

信息检索 · 计算机科学 2025-06-09 Xiangyang Li , Kuicai Dong , Yi Quan Lee , Wei Xia , Hao Zhang , Xinyi Dai , Yasheng Wang , Ruiming Tang

Competitive programming benchmarks are widely used in scenarios such as programming contests and large language model assessments. However, the growing presence of duplicate or highly similar problems raises concerns not only about…

软件工程 · 计算机科学 2025-10-28 Han Deng , Yuan Meng , Shixiang Tang , Wanli Ouyang , Xinzhu Ma

Pre-trained code models have emerged as the state-of-the-art paradigm for code search tasks. The paradigm involves pre-training the model on search-irrelevant tasks such as masked language modeling, followed by the fine-tuning stage, which…

软件工程 · 计算机科学 2024-11-25 Hande Dong , Jiayi Lin , Yanlin Wang , Yichong Leng , Jiawei Chen , Yutao Xie