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We propose a method for converting geometric shapes into hierarchically segmented parts with part labels. Our key idea is to train category-specific models from the scene graphs and part names that accompany 3D shapes in public…

Graphics · Computer Science 2017-05-05 Li Yi , Leonidas Guibas , Aaron Hertzmann , Vladimir G. Kim , Hao Su , Ersin Yumer

Dense retrieval has achieved impressive advances in first-stage retrieval from a large-scale document collection, which is built on bi-encoder architecture to produce single vector representation of query and document. However, a document…

Computation and Language · Computer Science 2022-03-17 Shunyu Zhang , Yaobo Liang , Ming Gong , Daxin Jiang , Nan Duan

Retrieval-augmented generation (RAG) methods can enhance the performance of LLMs by incorporating retrieved knowledge chunks into the generation process. In general, the retrieval and generation steps usually have different requirements for…

Information Retrieval · Computer Science 2025-04-16 Peiru Yang , Xintian Li , Zhiyang Hu , Jiapeng Wang , Jinhua Yin , Huili Wang , Lizhi He , Shuai Yang , Shangguang Wang , Yongfeng Huang , Tao Qi

In an era dominated by information overload, effective recommender systems are essential for managing the deluge of data across digital platforms. Multi-stage cascade ranking systems are widely used in the industry, with retrieval and…

Information Retrieval · Computer Science 2025-10-14 Junjie Huang , Jizheng Chen , Jianghao Lin , Jiarui Qin , Ziming Feng , Weinan Zhang , Yong Yu

Search is a prominent channel for discovering products on an e-commerce platform. Ranking products retrieved from search becomes crucial to address customer's need and optimize for business metrics. While learning to Rank (LETOR) models…

Information Retrieval · Computer Science 2019-07-16 Siddhartha Devapujula , Sagar Arora , Sumit Borar

Deep learning algorithms have recently gained significant attention due to their impressive performance. However, their high complexity and un-interpretable mode of operation hinders their confident deployment in real-world safety-critical…

Machine Learning · Computer Science 2024-06-28 Konstantinos P. Panousis , Dino Ienco , Diego Marcos

The way features propagate in Fully Convolutional Networks is of momentous importance to capture multi-scale contexts for obtaining precise segmentation masks. This paper proposes a novel series-parallel hybrid paradigm called the Chained…

Computer Vision and Pattern Recognition · Computer Science 2021-09-16 Quan Tang , Fagui Liu , Tong Zhang , Jun Jiang , Yu Zhang

Cross-modal retrieval between videos and texts has attracted growing attentions due to the rapid emergence of videos on the web. The current dominant approach for this problem is to learn a joint embedding space to measure cross-modal…

Computer Vision and Pattern Recognition · Computer Science 2020-03-03 Shizhe Chen , Yida Zhao , Qin Jin , Qi Wu

Video recognition remains an open challenge, requiring the identification of diverse content categories within videos. Mainstream approaches often perform flat classification, overlooking the intrinsic hierarchical structure relating…

Computer Vision and Pattern Recognition · Computer Science 2024-05-29 Rui Zhang , Shuailong Li , Junxiao Xue , Feng Lin , Qing Zhang , Xiao Ma , Xiaoran Yan

Document retrieval for tasks such as search and retrieval-augmented generation typically involves datasets that are unstructured: free-form text without explicit internal structure in each document. However, documents can have a structured…

Information Retrieval · Computer Science 2025-04-18 Millicent Li , Tongfei Chen , Benjamin Van Durme , Patrick Xia

Existing two-stream models, such as CLIP, encode images and text through independent representations, showing good performance while ensuring retrieval speed, have attracted attention from industry and academia. However, the single…

Computer Vision and Pattern Recognition · Computer Science 2025-02-20 Wanqing Cui , Rui Cheng , Jiafeng Guo , Xueqi Cheng

In the e-commerce advertising scenario, estimating the true probabilities (known as a calibrated estimate) on Click-Through Rate (CTR) and Conversion Rate (CVR) is critical. Previous research has introduced numerous solutions for addressing…

Machine Learning · Computer Science 2024-05-22 Shuai Yang , Hao Yang , Zhuang Zou , Linhe Xu , Shuo Yuan , Yifan Zeng

In this paper, we propose a deep hierarchical attention context model for lossless attribute compression of point clouds, leveraging a multi-resolution spatial structure and residual learning. A simple and effective Level of Detail (LoD)…

Computer Vision and Pattern Recognition · Computer Science 2025-04-02 Yueru Chen , Wei Zhang , Dingquan Li , Jing Wang , Ge Li

Graph-based retrieval-augmented generation (RAG) enriches large language models (LLMs) with external knowledge for long-context understanding and multi-hop reasoning, but existing methods face a granularity dilemma: fine-grained…

Computation and Language · Computer Science 2025-09-26 Yaxiong Wu , Jianyuan Bo , Yongyue Zhang , Sheng Liang , Yong Liu

Scene understanding includes many related sub-tasks, such as scene categorization, depth estimation, object detection, etc. Each of these sub-tasks is often notoriously hard, and state-of-the-art classifiers already exist for many of them.…

Computer Vision and Pattern Recognition · Computer Science 2011-10-25 Congcong Li , Adarsh Kowdle , Ashutosh Saxena , Tsuhan Chen

Any-order autoregressive models (AO-ARMs) offer a promising path toward efficient masked diffusion by enabling native key-value caching, but competitive performance has so far required two-stream attention, typically motivated as a means of…

Machine Learning · Computer Science 2026-02-19 Patrick Pynadath , Ruqi Zhang

Learning product representations that reflect complementary relationship plays a central role in e-commerce recommender system. In the absence of the product relationships graph, which existing methods rely on, there is a need to detect the…

Information Retrieval · Computer Science 2019-12-02 Da Xu , Chuanwei Ruan , Jason Cho , Evren Korpeoglu , Sushant Kumar , Kannan Achan

Recently, autoregressive recommendation models (ARMs), such as Meta's HSTU model, have emerged as a major breakthrough over traditional Deep Learning Recommendation Models (DLRMs), exhibiting the highly sought-after scaling law behaviour.…

Video Question Answering (VideoQA) is a challenging video understanding task since it requires a deep understanding of both question and video. Previous studies mainly focus on extracting sophisticated visual and language embeddings, fusing…

Computer Vision and Pattern Recognition · Computer Science 2021-05-17 Fangtao Li , Ting Bai , Chenyu Cao , Zihe Liu , Chenghao Yan , Bin Wu

Similar question retrieval is a core task in community-based question answering (CQA) services. To balance the effectiveness and efficiency, the question retrieval system is typically implemented as multi-stage rankers: The first-stage…

Information Retrieval · Computer Science 2021-07-20 Yinqiong Cai , Yixing Fan , Jiafeng Guo , Ruqing Zhang , Yanyan Lan , Xueqi Cheng