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Recently, pre-trained language models such as BERT have been applied to document ranking for information retrieval, which first pre-train a general language model on an unlabeled large corpus and then conduct ranking-specific fine-tuning on…

信息检索 · 计算机科学 2021-08-13 Lin Bo , Liang Pang , Gang Wang , Jun Xu , XiuQiang He , Ji-Rong Wen

Various contrastive learning approaches have been proposed in recent years and achieve significant empirical success. While effective and prevalent, contrastive learning has been less explored for time series data. A key component of…

With the evolution of the cloud and customer centric culture, we inherently accumulate huge repositories of textual reviews, feedback, and support data.This has driven enterprises to seek and research engagement patterns, user network…

机器学习 · 计算机科学 2020-07-23 Xin Deng , Ross Smith , Genevieve Quintin

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…

信息检索 · 计算机科学 2026-02-20 Jiaqi Xi , Raghav Saboo , Luming Chen , Martin Wang , Sudeep Das

Pretext Invariant Representation Learning (PIRL) followed by Supervised Fine-Tuning (SFT) has become a standard paradigm for learning with limited labels. We extend this approach to the Positive Unlabeled (PU) setting, where only a small…

Modern information retrieval (IR) models, trained exclusively on standard <query, passage> pairs, struggle to effectively interpret and follow explicit user instructions. We introduce InF-IR, a large-scale, high-quality training corpus…

计算与语言 · 计算机科学 2025-05-28 Yuchen Zhuang , Aaron Trinh , Rushi Qiang , Haotian Sun , Chao Zhang , Hanjun Dai , Bo Dai

The domain of natural language processing (NLP), which has greatly evolved over the last years, has highly benefited from the recent developments in word and sentence embeddings. Such embeddings enable the transformation of complex NLP…

计算与语言 · 计算机科学 2022-04-20 Spyros Zoupanos , Stratis Kolovos , Athanasios Kanavos , Orestis Papadimitriou , Manolis Maragoudakis

In standard supervised machine learning, it is necessary to provide a label for every input in the data. While raw data in many application domains is easily obtainable on the Internet, manual labelling of this data is prohibitively…

机器学习 · 计算机科学 2023-09-07 Konstantinos Christopher Tsiolis

Composed Image Retrieval (CIR) is a challenging image retrieval paradigm that enables to retrieve target images based on multimodal queries consisting of reference images and modification texts. Although substantial progress has been made…

计算机视觉与模式识别 · 计算机科学 2026-04-21 Zhiwei Chen , Yupeng Hu , Zhiheng Fu , Zixu Li , Jiale Huang , Qinlei Huang , Yinwei Wei

The rapid evolution of malware variants requires robust classification methods to enhance cybersecurity. While Large Language Models (LLMs) offer potential for generating malware descriptions to aid family classification, their utility is…

密码学与安全 · 计算机科学 2025-05-01 Ivan Montoya Sanchez , Shaswata Mitra , Aritran Piplai , Sudip Mittal

Instance-level Image Retrieval (IIR), or simply Instance Retrieval, deals with the problem of finding all the images within an dataset that contain a query instance (e.g. an object). This paper makes the first attempt that tackles this…

计算机视觉与模式识别 · 计算机科学 2022-09-29 Tao Wu , Tie Luo , Donald Wunsch

Neural networks with deep architectures have demonstrated significant performance improvements in computer vision, speech recognition, and natural language processing. The challenges in information retrieval (IR), however, are different…

信息检索 · 计算机科学 2021-03-23 Bhaskar Mitra

Dense retrieval conducts text retrieval in the embedding space and has shown many advantages compared to sparse retrieval. Existing dense retrievers optimize representations of queries and documents with contrastive training and map them to…

信息检索 · 计算机科学 2021-07-19 Yizhi Li , Zhenghao Liu , Chenyan Xiong , Zhiyuan Liu

Medical systematic reviews typically require assessing all the documents retrieved by a search. The reason is two-fold: the task aims for ``total recall''; and documents retrieved using Boolean search are an unordered set, and thus it is…

信息检索 · 计算机科学 2022-12-20 Shuai Wang , Harrisen Scells , Bevan Koopman , Guido Zuccon

This paper presents SimCSE, a simple contrastive learning framework that greatly advances state-of-the-art sentence embeddings. We first describe an unsupervised approach, which takes an input sentence and predicts itself in a contrastive…

计算与语言 · 计算机科学 2022-05-19 Tianyu Gao , Xingcheng Yao , Danqi Chen

Transformer-based pre-trained language models such as BERT have achieved remarkable results in Semantic Sentence Matching. However, existing models still suffer from insufficient ability to capture subtle differences. Minor noise like word…

计算与语言 · 计算机科学 2023-04-17 Sirui Wang , Di Liang , Jian Song , Yuntao Li , Wei Wu

Sequential recommender systems aim to model users' evolving interests from their historical behaviors, and hence make customized time-relevant recommendations. Compared with traditional models, deep learning approaches such as CNN and RNN…

信息检索 · 计算机科学 2021-03-08 Chang Liu , Xiaoguang Li , Guohao Cai , Zhenhua Dong , Hong Zhu , Lifeng Shang

Contrastive learning techniques have been widely used in the field of computer vision as a means of augmenting datasets. In this paper, we extend the use of these contrastive learning embeddings to sentiment analysis tasks and demonstrate…

计算与语言 · 计算机科学 2021-12-03 Ipsita Mohanty , Ankit Goyal , Alex Dotterweich

The central challenge of reasoning-intensive retrieval lies in identifying implicitreasoning relationships between queries and documents, rather than superficial se-mantic or lexical similarity. The contrastive learning paradigm is…

信息检索 · 计算机科学 2026-03-19 Guangzhi Wang , Yinghao Jiao , Zhi Liu

Contrastive learning is an approach to representation learning that utilizes naturally occurring similar and dissimilar pairs of data points to find useful embeddings of data. In the context of document classification under topic modeling…

机器学习 · 计算机科学 2020-03-05 Christopher Tosh , Akshay Krishnamurthy , Daniel Hsu