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Comprehensively retrieving diverse documents is crucial to address queries that admit a wide range of valid answers. We introduce retrieve-verify-retrieve (RVR), a multi-round retrieval framework designed to maximize answer coverage.…

计算与语言 · 计算机科学 2026-02-23 Deniz Qian , Hung-Ting Chen , Eunsol Choi

Ranking consistently emerges as a primary focus in information retrieval research. Retrieval and ranking models serve as the foundation for numerous applications, including web search, open domain QA, enterprise domain QA, and text-based…

信息检索 · 计算机科学 2024-12-16 Hansa Meghwani

Retrieval-Augmented Generation (RAG) improves reliability of large language models by incorporating external knowledge, but the retrieval process can introduce bias that propagates to generated outputs. This issue is particularly…

数据库 · 计算机科学 2026-05-18 Yingqi Zhao , Vasilis Efthymiou , Jyrki Nummenmaa , Kostas Stefanidis

In visual search, the gallery set could be incrementally growing and added to the database in practice. However, existing methods rely on the model trained on the entire dataset, ignoring the continual updating of the model. Besides, as the…

计算机视觉与模式识别 · 计算机科学 2022-05-27 Timmy S. T. Wan , Jun-Cheng Chen , Tzer-Yi Wu , Chu-Song Chen

In this paper, we identify and study an important problem of gradient item retrieval. We define the problem as retrieving a sequence of items with a gradual change on a certain attribute, given a reference item and a modification text. For…

信息检索 · 计算机科学 2021-06-02 Haonan Wang , Chang Zhou , Carl Yang , Hongxia Yang , Jingrui He

The simple approach of retrieving a closest match of a query image from one in the gallery, compares an image pair using sum of absolute difference in pixel or feature space. The process is computationally expensive, ill-posed to…

计算机视觉与模式识别 · 计算机科学 2019-07-02 Saket Singh , Debdoot Sheet , Mithun Dasgupta

In natural perception, different items (objects) in a scene are rarely equally relevant to the observer. The brain improves performance by directing attention to the most relevant items, for example the ones most likely to be probed. For a…

神经元与认知 · 定量生物学 2018-02-20 Nuwan de Silva , Wei Ji Ma

Retrievability measures the influence a retrieval system has on the access to information in a given collection of items. This measure can help in making an evaluation of the search system based on which insights can be drawn. In this…

信息检索 · 计算机科学 2023-05-26 Dwaipayan Roy , Zeljko Carevic , Philipp Mayr

Embedding models, which learn latent representations of users and items based on user-item interaction patterns, are a key component of recommendation systems. In many applications, contextual constraints need to be applied to refine…

信息检索 · 计算机科学 2019-07-04 Syrine Krichene , Mike Gartrell , Clement Calauzenes

In this paper, we consider the problem of finding the feature correspondences among a collection of feature sets, by using their point-wise unary features. This is a fundamental problem in computer vision and pattern recognition, which also…

计算机视觉与模式识别 · 计算机科学 2016-06-14 Junchi Yan , Zhe Ren , Hongyuan Zha , Stephen Chu

Dense retrieval models use bi-encoder network architectures for learning query and document representations. These representations are often in the form of a vector representation and their similarities are often computed using the dot…

信息检索 · 计算机科学 2023-05-01 Hamed Zamani , Michael Bendersky

Re-finding electronic documents from a personal computer is a frequent demand to users. In a simple re-finding task, people can use many methods to retrieve a document, such as navigating directly to the document's folder, searching with a…

信息检索 · 计算机科学 2016-01-28 Gangli Liu , Ling Feng

Confounding bias, missing data, and selection bias are three common obstacles to valid causal inference in the data sciences. Covariate adjustment is the most pervasive technique for recovering casual effects from confounding bias. In this…

机器学习 · 计算机科学 2019-09-17 Mojdeh Saadati , Jin Tian

The growing proliferation of customized and pretrained generative models has made it infeasible for a user to be fully cognizant of every model in existence. To address this need, we introduce the task of content-based model search: given a…

计算机视觉与模式识别 · 计算机科学 2023-10-25 Daohan Lu , Sheng-Yu Wang , Nupur Kumari , Rohan Agarwal , Mia Tang , David Bau , Jun-Yan Zhu

As a fundamental problem in pattern recognition, graph matching has applications in a variety of fields, from computer vision to computational biology. In graph matching, patterns are modeled as graphs and pattern recognition amounts to…

计算机视觉与模式识别 · 计算机科学 2008-06-19 Tiberio S. Caetano , Julian J. McAuley , Li Cheng , Quoc V. Le , Alex J. Smola

Unresolved coreference is a bottleneck for relation extraction, and high-quality coreference resolvers may produce an output that makes it a lot easier to extract knowledge triples. We show how to improve coreference resolvers by forwarding…

In information retrieval research, precision and recall have long been used to evaluate IR systems. However, given that a number of retrieval systems resembling one another are already available to the public, it is valuable to retrieve…

计算与语言 · 计算机科学 2007-05-23 Atsushi Fujii , Tetsuya Ishikawa

Stochastic algorithms are among the best for solving computationally hard search and reasoning problems. The runtime of such procedures is characterized by a random variable. Different algorithms give rise to different probability…

人工智能 · 计算机科学 2013-02-08 Carla P. Gomes , Bart Selman

Building dense retrievers requires a series of standard procedures, including training and validating neural models and creating indexes for efficient search. However, these procedures are often misaligned in that training objectives do not…

计算与语言 · 计算机科学 2022-10-26 Gyuwan Kim , Jinhyuk Lee , Barlas Oguz , Wenhan Xiong , Yizhe Zhang , Yashar Mehdad , William Yang Wang

In this paper we study the problem of content-based image retrieval. In this problem, the most popular performance measure is the top precision measure, and the most important component of a retrieval system is the similarity function used…

计算机视觉与模式识别 · 计算机科学 2016-08-23 Ru-Ze Liang , Lihui Shi , Haoxiang Wang , Jiandong Meng , Jim Jing-Yan Wang , Qingquan Sun , Yi Gu