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Learning precise representations of users and items to fit observed interaction data is the fundamental task of collaborative filtering. Existing studies usually infer entangled representations to fit such interaction data, neglecting to…

信息检索 · 计算机科学 2024-01-11 Zhiqiang Guo , Guohui Li , Jianjun Li , Chaoyang Wang , Si Shi

Clustering is viewed as an unsupervised technique, but in practice it requires guidance to uncover meaningful structures. We formalize this with guided clustering, a paradigm that uses a guiding variable to steer the discovery process, and…

统计方法学 · 统计学 2026-04-08 Violaine Courrier , Christophe Biernacki

This paper introduces a hybrid attention and autoencoder (AE) model for unsupervised online anomaly detection in time series. The autoencoder captures local structural patterns in short embeddings, while the attention model learns long-term…

机器学习 · 计算机科学 2024-01-09 Seyed Amirhossein Najafi , Mohammad Hassan Asemani , Peyman Setoodeh

Identifying customer segments in retail banking portfolios with different risk profiles can improve the accuracy of credit scoring. The Variational Autoencoder (VAE) has shown promising results in different research domains, and it has been…

计算工程、金融与科学 · 计算机科学 2018-06-08 Rogelio Andrade Mancisidor , Michael Kampffmeyer , Kjersti Aas , Robert Jenssen

We introduce a novel self-supervised deep clustering approach tailored for unstructured data without requiring prior knowledge of the number of clusters, termed Adaptive Self-supervised Robust Clustering (ASRC). In particular, ASRC…

机器学习 · 计算机科学 2024-07-31 Chen-Lu Ding , Jiancan Wu , Wei Lin , Shiyang Shen , Xiang Wang , Yancheng Yuan

Work in deep clustering focuses on finding a single partition of data. However, high-dimensional data, such as images, typically feature multiple interesting characteristics one could cluster over. For example, images of objects against a…

Learning data representations that reflect the customers' creditworthiness can improve marketing campaigns, customer relationship management, data and process management or the credit risk assessment in retail banks. In this research, we…

机器学习 · 统计学 2019-03-18 Rogelio A Mancisidor , Michael Kampffmeyer , Kjersti Aas , Robert Jenssen

Jointly identifying a mixture of discrete and continuous factors of variability without supervision is a key problem in unraveling complex phenomena. Variational inference has emerged as a promising method to learn interpretable mixture…

机器学习 · 计算机科学 2021-04-14 Yeganeh M. Marghi , Rohan Gala , Uygar Sümbül

We demonstrate the application of machine learning for rapid and accurate extraction of plasmonic particles cluster geometries from hyperspectral image data via a dual variational autoencoder (dual-VAE). In this approach, the information is…

无序系统与神经网络 · 物理学 2022-08-09 Muammer Y. Yaman , Sergei V. Kalinin , Kathryn N. Guye , David Ginger , Maxim Ziatdinov

We present a novel method for constructing Variational Autoencoder (VAE). Instead of using pixel-by-pixel loss, we enforce deep feature consistency between the input and the output of a VAE, which ensures the VAE's output to preserve the…

计算机视觉与模式识别 · 计算机科学 2024-03-21 Xianxu Hou , Linlin Shen , Ke Sun , Guoping Qiu

Recent studies have shown that autoencoder-based models can achieve superior performance on anomaly detection tasks due to their excellent ability to fit complex data in an unsupervised manner. In this work, we propose a novel…

机器学习 · 计算机科学 2022-09-20 Wenkai Li , Wenbo Hu , Ting Chen , Ning Chen , Cheng Feng

We demonstrate the efficiencies and explanatory abilities of extensions to the common tools of Autoencoders and LLM interpreters, in the novel context of comparing different cultural approaches to the same international news event. We…

多媒体 · 计算机科学 2024-08-16 Tiancheng Shi , Yuanchen Wei , John R. Kender

In today's digital world, the generation of vast amounts of streaming data in various domains has become ubiquitous. However, many of these data are unlabeled, making it challenging to identify events, particularly anomalies. This task…

机器学习 · 计算机科学 2026-02-16 Jin Li , Kleanthis Malialis , Christos G. Panayiotou , Marios M. Polycarpou

Feature selection methods have an important role on the readability of data and the reduction of complexity of learning algorithms. In recent years, a variety of efforts are investigated on feature selection problems based on unsupervised…

机器学习 · 计算机科学 2019-12-12 Mohsen Ghassemi Parsa , Hadi Zare , Mehdi Ghatee

The recently developed variational autoencoders (VAEs) have proved to be an effective confluence of the rich representational power of neural networks with Bayesian methods. However, most work on VAEs use a rather simple prior over the…

机器学习 · 计算机科学 2017-08-29 Prasoon Goyal , Zhiting Hu , Xiaodan Liang , Chenyu Wang , Eric Xing

Support vector clustering (SVC) is a versatile clustering technique that is able to identify clusters of arbitrary shapes by exploiting the kernel trick. However, one hurdle that restricts the application of SVC lies in its sensitivity to…

机器学习 · 计算机科学 2016-08-10 Dong Huang , Chang-Dong Wang , Jian-Huang Lai , Yun Liang , Shan Bian , Yu Chen

As a widely adopted technique in data transmission, video compression effectively reduces the size of files, making it possible for real-time cloud computing. However, it comes at the cost of visual quality, posing challenges to the…

计算机视觉与模式识别 · 计算机科学 2025-04-23 Huimin Zeng , Jiacheng Li , Zhiwei Xiong

Selecting the most appropriate data examples to present a deep neural network (DNN) at different stages of training is an unsolved challenge. Though practitioners typically ignore this problem, a non-trivial data scheduling method may…

机器学习 · 计算机科学 2018-07-25 Vithursan Thangarasa , Graham W. Taylor

Generative model-based deep clustering frameworks excel in classifying complex data, but are limited in handling dynamic and complex features because they require prior knowledge of the number of clusters. In this paper, we propose a…

机器学习 · 计算机科学 2023-11-28 Zhenshan Bing , Yuan Meng , Yuqi Yun , Hang Su , Xiaojie Su , Kai Huang , Alois Knoll

Deep Learning approaches have brought solutions, with impressive performance, to general classification problems where wealthy of annotated data are provided for training. In contrast, less progress has been made in continual learning of a…

计算机视觉与模式识别 · 计算机科学 2020-12-18 Eric Lopez-Lopez , Carlos V. Regueiro , Xose M. Pardo