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Retrieval-enhanced language models (LMs), which condition their predictions on text retrieved from large external datastores, have recently shown significant perplexity improvements compared to standard LMs. One such approach, the $k$NN-LM,…

Computation and Language · Computer Science 2022-10-31 Andrew Drozdov , Shufan Wang , Razieh Rahimi , Andrew McCallum , Hamed Zamani , Mohit Iyyer

Item-based models are among the most popular collaborative filtering approaches for building recommender systems. Random walks can provide a powerful tool for harvesting the rich network of interactions captured within these models. They…

Information Retrieval · Computer Science 2020-10-07 Athanasios N. Nikolakopoulos , George Karypis

Data selection plays a crucial role in data-driven decision-making, including in large language models (LLMs), and is typically task-dependent. Properties such as data quality and diversity have been extensively studied and are known to…

Machine Learning · Computer Science 2025-09-30 Yuqing Wang , Shangding Gu

Industry recommender systems usually suffer from highly-skewed long-tail item distributions where a small fraction of the items receives most of the user feedback. This skew hurts recommender quality especially for the item slices without…

Information Retrieval · Computer Science 2023-09-06 Yin Zhang , Ruoxi Wang , Tiansheng Yao , Xinyang Yi , Lichan Hong , James Caverlee , Ed H. Chi , Derek Zhiyuan Cheng

With advances in deep learning model training strategies, the training of Point cloud classification methods is significantly improving. For example, PointNeXt, which adopts prominent training techniques and InvResNet layers into…

Computer Vision and Pattern Recognition · Computer Science 2024-04-11 Shivanand Venkanna Sheshappanavar , Chandra Kambhamettu

kNN-MT, recently proposed by Khandelwal et al. (2020a), successfully combines pre-trained neural machine translation (NMT) model with token-level k-nearest-neighbor (kNN) retrieval to improve the translation accuracy. However, the…

Computation and Language · Computer Science 2021-05-28 Xin Zheng , Zhirui Zhang , Junliang Guo , Shujian Huang , Boxing Chen , Weihua Luo , Jiajun Chen

Following recent successes in exploiting both latent factor and word embedding models in recommendation, we propose a novel Regularized Multi-Embedding (RME) based recommendation model that simultaneously encapsulates the following ideas…

Information Retrieval · Computer Science 2018-09-05 Thanh Tran , Kyumin Lee , Yiming Liao , Dongwon Lee

The computational cost of training multimodal large language models (MLLMs) grows rapidly with the number of processed tokens. Existing efficiency methods mainly target inference via token reduction or merging, offering limited benefits…

Computer Vision and Pattern Recognition · Computer Science 2026-04-30 Chaoyu Li , Yogesh Kulkarni , Pooyan Fazli

Knowledge Distillation (KD) is a widely-used technology to inherit information from cumbersome teacher models to compact student models, consequently realizing model compression and acceleration. Compared with image classification, object…

Computer Vision and Pattern Recognition · Computer Science 2021-12-10 Gang Li , Xiang Li , Yujie Wang , Shanshan Zhang , Yichao Wu , Ding Liang

In recent years, as intrusion attacks on IoT networks have grown exponentially, there is an immediate need for sophisticated intrusion detection systems (IDSs). A vast majority of current IDSs are data-driven, which means that one of the…

Machine Learning · Computer Science 2020-01-01 Suchet Sapre , Pouyan Ahmadi , Khondkar Islam

This study investigates the relationship between deep learning (DL) image reconstruction quality and anomaly detection performance, and evaluates the efficacy of an artificial intelligence (AI) assistant in enhancing radiologists'…

Most NN-RSs focus on accuracy by building representations from the direct user-item interactions (e.g., user-item rating matrix), while ignoring the underlying relatedness between users and items (e.g., users who rate the same ratings for…

Information Retrieval · Computer Science 2022-05-20 Yuanbo Xu , En Wang , Yongjian Yang , Yi Chang

The task of text classification using Bidirectional based LSTM architectures is computationally expensive and time consuming to train. For this, transformers were discovered which effectively give good performance as compared to the…

Computation and Language · Computer Science 2022-06-07 Raunak Joshi , Abhishek Gupta

The $k$-nearest-neighbor language model ($k$NN-LM), one of the retrieval-augmented language models, improves the perplexity for given text by directly accessing a large datastore built from any text data during inference. A widely held…

Computation and Language · Computer Science 2025-03-31 Yuto Nishida , Makoto Morishita , Hiroyuki Deguchi , Hidetaka Kamigaito , Taro Watanabe

The current state-of-the-art object recognition algorithms, deep convolutional neural networks (DCNNs), are inspired by the architecture of the mammalian visual system, and are capable of human-level performance on many tasks. However, even…

Computer Vision and Pattern Recognition · Computer Science 2020-07-17 Callie Federer , Haoyan Xu , Alona Fyshe , Joel Zylberberg

We consider the problem of distance metric learning (DML), where the task is to learn an effective similarity measure between images. We revisit ProxyNCA and incorporate several enhancements. We find that low temperature scaling is a…

Computer Vision and Pattern Recognition · Computer Science 2020-07-24 Eu Wern Teh , Terrance DeVries , Graham W. Taylor

Ensemble methods are frequently used in recommender systems to improve accuracy by combining multiple models. Recent work reports sizable performance gains, but most studies still optimize primarily for accuracy and robustness rather than…

Information Retrieval · Computer Science 2026-04-10 Jannik Nitschke , Lukas Wegmeth , Joeran Beel

Machine learning models and libraries can train datasets of different sizes and perform prediction and classification operations, but machine learning models and libraries cause slow and long training times on large datasets. This article…

Machine Learning · Computer Science 2025-09-17 Halil Hüseyin Çalışkan , Talha Koruk

In the realm of machine learning, the KNN classification algorithm is widely recognized for its simplicity and efficiency. However, its sensitivity to the K value poses challenges, especially with small sample sizes or outliers, impacting…

Machine Learning · Computer Science 2024-05-29 Junzhuo Chen , Zhixin Lu , Shitong Kang

When tracking user-specific online activities, each user's preference is revealed in the form of choices and comparisons. For example, a user's purchase history is a record of her choices, i.e. which item was chosen among a subset of…

Machine Learning · Statistics 2019-01-01 Sahand Negahban , Sewoong Oh , Kiran K. Thekumparampil , Jiaming Xu