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We propose a variational Bayesian (VB) approach to learning distributions of latent variables in deep neural network (DNN) models for cross-domain knowledge transfer, to address acoustic mismatches between training and testing conditions.…

Audio and Speech Processing · Electrical Eng. & Systems 2022-02-22 Hu Hu , Sabato Marco Siniscalchi , Chao-Han Huck Yang , Chin-Hui Lee

In a typical online learning scenario, a learner is required to process a large data stream using a small memory buffer. Such a requirement is usually in conflict with a learner's primary pursuit of prediction accuracy. To address this…

Machine Learning · Computer Science 2012-05-14 Thomas P. Minka , Rongjing Xiang , Yuan , Qi

In this work, we propose a novel variational Bayesian adaptive learning approach for cross-domain knowledge transfer to address acoustic mismatches between training and testing conditions, such as recording devices and environmental noise.…

Audio and Speech Processing · Electrical Eng. & Systems 2025-01-28 Hu Hu , Sabato Marco Siniscalchi , Chao-Han Huck Yang , Chin-Hui Lee

The mixed multinomial logit model assumes constant preference parameters of a decision-maker throughout different choice situations, which may be considered too strong for certain choice modelling applications. This paper proposes an…

Machine Learning · Statistics 2023-03-30 Mirosława Łukawska , Anders Fjendbo Jensen , Filipe Rodrigues

Visual Commonsense Reasoning (VCR) predicts an answer with corresponding rationale, given a question-image input. VCR is a recently introduced visual scene understanding task with a wide range of applications, including visual question…

Computer Vision and Pattern Recognition · Computer Science 2023-12-11 Xuejiao Tang , Xin Huang , Wenbin Zhang , Travers B. Child , Qiong Hu , Zhen Liu , Ji Zhang

Most of existing embedding based recommendation models use embeddings (vectors) corresponding to a single fixed point in low-dimensional space, to represent users and items. Such embeddings fail to precisely represent the users/items with…

Information Retrieval · Computer Science 2020-06-22 Junyang Jiang , Deqing Yang , Yanghua Xiao , Chenlu Shen

Repurchase behavior is a primary signal in large-scale retail recommendation, particularly in categories with frequent replenishment: many items in a user's next basket were previously purchased, and their timing follows stable,…

Information Retrieval · Computer Science 2026-04-28 Yanan Cao , Ashish Ranjan , Sinduja Subramaniam , Evren Korpeoglu , Kaushiki Nag , Kannan Achan

Bayesian Personalized Ranking (BPR) is a representative pairwise learning method for optimizing recommendation models. It is widely known that the performance of BPR depends largely on the quality of negative sampler. In this paper, we make…

Information Retrieval · Computer Science 2018-09-24 Jingtao Ding , Guanghui Yu , Xiangnan He , Yong Li , Depeng Jin

The sequential recommendation systems capture users' dynamic behavior patterns to predict their next interaction behaviors. Most existing sequential recommendation methods only exploit the local context information of an individual…

Information Retrieval · Computer Science 2022-06-08 Yixin Zhang , Yong Liu , Yonghui Xu , Hao Xiong , Chenyi Lei , Wei He , Lizhen Cui , Chunyan Miao

Through sequential construction of posteriors on observing data online, Bayes' theorem provides a natural framework for continual learning. We develop Variational Auto-Regressive Gaussian Processes (VAR-GPs), a principled posterior updating…

Machine Learning · Statistics 2021-06-15 Sanyam Kapoor , Theofanis Karaletsos , Thang D. Bui

We propose a novel capsule network based variational encoder architecture, called Bayesian capsules (B-Caps), to modulate the mean and standard deviation of the sampling distribution in the latent space. We hypothesized that this approach…

Computer Vision and Pattern Recognition · Computer Science 2020-10-20 Harish RaviPrakash , Syed Muhammad Anwar , Ulas Bagci

We present new Bayesian methodology for consumer sales forecasting. With a focus on multi-step ahead forecasting of daily sales of many supermarket items, we adapt dynamic count mixture models to forecast individual customer transactions,…

Methodology · Statistics 2022-06-07 Lindsay R. Berry , Paul Helman , Mike West

Recently proposed Skip-gram model is a powerful method for learning high-dimensional word representations that capture rich semantic relationships between words. However, Skip-gram as well as most prior work on learning word representations…

Computation and Language · Computer Science 2015-11-17 Sergey Bartunov , Dmitry Kondrashkin , Anton Osokin , Dmitry Vetrov

Learning predictors that do not rely on spurious correlations involves building causal representations. However, learning such a representation is very challenging. We, therefore, formulate the problem of learning a causal representation…

Deep reinforcement learning (RL) algorithms suffer severe performance degradation when the interaction data is scarce, which limits their real-world application. Recently, visual representation learning has been shown to be effective and…

Machine Learning · Computer Science 2022-08-17 Yang Yue , Bingyi Kang , Zhongwen Xu , Gao Huang , Shuicheng Yan

Visually-aware recommendation on E-commerce platforms aims to leverage visual information of items to predict a user's preference. It is commonly observed that user's attention to visual features does not always reflect the real preference.…

Information Retrieval · Computer Science 2021-07-14 Ruihong Qiu , Sen Wang , Zhi Chen , Hongzhi Yin , Zi Huang

Items in modern recommender systems are often organized in hierarchical structures. These hierarchical structures and the data within them provide valuable information for building personalized recommendation systems. In this paper, we…

Machine Learning · Computer Science 2019-08-21 Zitao Liu , Zhexuan Xu , Yan Yan

Context, as referred to situational factors related to the object of interest, can help infer the object's states or properties in visual recognition. As such contextual features are too diverse (across instances) to be annotated, existing…

Computer Vision and Pattern Recognition · Computer Science 2021-10-11 Mingzhou Liu , Xinwei Sun , Fandong Zhang , Yizhou Yu , Yizhou Wang

Latent variable models like the Variational Auto-Encoder (VAE) are commonly used to learn representations of images. However, for downstream tasks like semantic classification, the representations learned by VAE are less competitive than…

Machine Learning · Statistics 2022-05-31 Mingtian Zhang , Tim Z. Xiao , Brooks Paige , David Barber

We focus on grounding (i.e., localizing or linking) referring expressions in images, e.g., ``largest elephant standing behind baby elephant''. This is a general yet challenging vision-language task since it does not only require the…

Computer Vision and Pattern Recognition · Computer Science 2019-07-09 Yulei Niu , Hanwang Zhang , Zhiwu Lu , Shih-Fu Chang