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Large margin nearest neighbor (LMNN) is a metric learner which optimizes the performance of the popular $k$NN classifier. However, its resulting metric relies on pre-selected target neighbors. In this paper, we address the feasibility of…

Data Structures and Algorithms · Computer Science 2018-05-03 Babak Hosseini , Barbara Hammer

While other areas of machine learning have seen more and more automation, designing a high-performing recommender system still requires a high level of human effort. Furthermore, recent work has shown that modern recommender system…

Information Retrieval · Computer Science 2022-10-10 Duncan McElfresh , Sujay Khandagale , Jonathan Valverde , John P. Dickerson , Colin White

In the realm of recommender systems (RS), Top-$K$ ranking metrics such as NDCG@$K$ are the gold standard for evaluating recommendation performance. However, during the training of recommendation models, optimizing NDCG@$K$ poses significant…

Information Retrieval · Computer Science 2025-08-11 Weiqin Yang , Jiawei Chen , Shengjia Zhang , Peng Wu , Yuegang Sun , Yan Feng , Chun Chen , Can Wang

The growth of recommender systems (RecSys) is driven by digitization and the need for personalized content in areas such as e-commerce and video streaming. The content in these systems often changes rapidly and therefore they constantly…

Information Retrieval · Computer Science 2024-11-15 Shiyu Wang , Hao Ding , Yupeng Gu , Sergul Aydore , Kousha Kalantari , Branislav Kveton

With new accelerator hardware for DNN, the computing power for AI applications has increased rapidly. However, as DNN algorithms become more complex and optimized for specific applications, latency requirements remain challenging, and it is…

Machine Learning · Computer Science 2021-05-10 Matthias Wess , Matvey Ivanov , Anvesh Nookala , Christoph Unger , Alexander Wendt , Axel Jantsch

In recent years, two competitive time series classification models, namely, ROCKET and MINIROCKET, have garnered considerable attention due to their low training cost and high accuracy. However, they rely on a large number of random 1-D…

Machine Learning · Computer Science 2024-07-26 Shaowu Chen , Weize Sun , Lei Huang , Xiaopeng Li , Qingyuan Wang , Deepu John

Result relevance scoring is critical to e-commerce search user experience. Traditional information retrieval methods focus on keyword matching and hand-crafted or counting-based numeric features, with limited understanding of item semantic…

Information Retrieval · Computer Science 2021-04-27 Yunjiang Jiang , Yue Shang , Rui Li , Wen-Yun Yang , Guoyu Tang , Chaoyi Ma , Yun Xiao , Eric Zhao

In recent years, there are a large number of recommendation algorithms proposed in the literature, from traditional collaborative filtering to deep learning algorithms. However, the concerns about how to standardize open source…

Learning to Rank (LTR) algorithms are usually evaluated using Information Retrieval metrics like Normalised Discounted Cumulative Gain (NDCG) or Mean Average Precision. As these metrics rely on sorting predicted items' scores (and thus, on…

Information Retrieval · Computer Science 2021-05-25 Przemysław Pobrotyn , Radosław Białobrzeski

Web image datasets curated online inherently contain ambiguous in-distribution (ID) instances and out-of-distribution (OOD) instances, which we collectively call non-conforming (NC) instances. In many recent approaches for mitigating the…

Computer Vision and Pattern Recognition · Computer Science 2023-07-20 Xia Huang , Kai Fong Ernest Chong

Learning from many real-world datasets is limited by a problem called the class imbalance problem. A dataset is imbalanced when one class (the majority class) has significantly more samples than the other class (the minority class). Such…

Machine Learning · Computer Science 2017-11-30 Soroush Saryazdi , Bahareh Nikpour , Hossein Nezamabadi-pour

Perceptual distances between images, as measured in the space of pre-trained deep features, have outperformed prior low-level, pixel-based metrics on assessing perceptual similarity. While the capabilities of older and less accurate models…

Computer Vision and Pattern Recognition · Computer Science 2022-11-01 Manoj Kumar , Neil Houlsby , Nal Kalchbrenner , Ekin D. Cubuk

For object detection, the two-stage approach (e.g., Faster R-CNN) has been achieving the highest accuracy, whereas the one-stage approach (e.g., SSD) has the advantage of high efficiency. To inherit the merits of both while overcoming their…

Computer Vision and Pattern Recognition · Computer Science 2018-01-04 Shifeng Zhang , Longyin Wen , Xiao Bian , Zhen Lei , Stan Z. Li

While effective in recommendation tasks, collaborative filtering (CF) techniques face the challenge of data sparsity. Researchers have begun leveraging contrastive learning to introduce additional self-supervised signals to address this.…

Information Retrieval · Computer Science 2024-02-20 Peijie Sun , Le Wu , Kun Zhang , Xiangzhi Chen , Meng Wang

Augmenting neural machine translation with external memory at decoding time, in the form of k-nearest neighbors machine translation ($k$-NN MT), is a well-established strategy for increasing translation performance. $k$-NN MT retrieves a…

Computation and Language · Computer Science 2025-09-23 Evgeniia Tokarchuk , Sergey Troshin , Vlad Niculae

Intelligent recommendation systems have clearly increased the revenue of well-known e-commerce firms. Users receive product recommendations from recommendation systems. Cinematic recommendations are made to users by a movie recommendation…

Information Retrieval · Computer Science 2026-03-02 Rohit Chivukula , T. Jaya Lakshmi , Hemlata Sharma , C. H. S. N. P. Sairam Rallabandi

Neural personalized recommendation models are used across a wide variety of datacenter applications including search, social media, and entertainment. State-of-the-art models comprise large embedding tables that have billions of parameters…

Hardware Architecture · Computer Science 2021-02-02 Mark Wilkening , Udit Gupta , Samuel Hsia , Caroline Trippel , Carole-Jean Wu , David Brooks , Gu-Yeon Wei

This paper analyzes the design and competitiveness of four neural network (NN) architectures recently proposed as decoders for forward error correction (FEC) codes. We first consider the so-called single-label neural network (SLNN) and the…

Signal Processing · Electrical Eng. & Systems 2026-01-28 Yuncheng Yuan , Péter Scheepers , Lydia Tasiou , Yunus Can Gültekin , Federico Corradi , Alex Alvarado

The emergence of neural network capabilities invariably leads to a significant surge in computational demands due to expanding model sizes and increased computational complexity. To reduce model size and lower inference costs, recent…

Hardware Architecture · Computer Science 2025-01-22 Guoyu Li , Shengyu Ye , Chunyun Chen , Yang Wang , Fan Yang , Ting Cao , Cheng Liu , Mohamed M. Sabry , Mao Yang

The human vision and perception system is inherently incremental where new knowledge is continually learned over time whilst existing knowledge is retained. On the other hand, deep learning networks are ill-equipped for incremental…

Computer Vision and Pattern Recognition · Computer Science 2020-10-08 Can Peng , Kun Zhao , Brian C. Lovell