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Real-world image super-resolution is a critical image processing task, where two key evaluation criteria are the fidelity to the original image and the visual realness of the generated results. Although existing methods based on diffusion…

计算机视觉与模式识别 · 计算机科学 2025-03-20 Runyi Li , Bin Chen , Jian Zhang , Radu Timofte

Data is essential to performing time series analysis utilizing machine learning approaches, whether for classic models or today's large language models. A good time-series dataset is advantageous for the model's accuracy, robustness, and…

机器学习 · 计算机科学 2024-04-29 Chenxi Sun , Hongyan Li , Yaliang Li , Shenda Hong

Conversational recommender systems have attracted immense attention recently. The most recent approaches rely on neural models trained on recorded dialogs between humans, implementing an end-to-end learning process. These systems are…

信息检索 · 计算机科学 2022-05-26 Ahtsham Manzoor , Dietmar Jannach

Temporally indexed data are essential in a wide range of fields and of interest to machine learning researchers. Time series data, however, are often scarce or highly sensitive, which precludes the sharing of data between researchers and…

机器学习 · 计算机科学 2024-07-10 Alexander Nikitin , Letizia Iannucci , Samuel Kaski

Irregularly-sampled time series (ITS) are native to high-impact domains like healthcare, where measurements are collected over time at uneven intervals. However, for many classification problems, only small portions of long time series are…

机器学习 · 计算机科学 2023-02-09 Thomas Hartvigsen , Jidapa Thadajarassiri , Xiangnan Kong , Elke Rundensteiner

Time series (TS) are present in many fields of knowledge, research, and engineering. The processing and analysis of TS are essential in order to extract knowledge from the data and to tackle forecasting or predictive maintenance tasks among…

计算与语言 · 计算机科学 2022-02-02 Manuel Parra-Royón , Francisco Baldan , Ghislain Atemezing , J. M. Benitez

Generating high-quality answers consistently by providing contextual information embedded in the prompt passed to the Large Language Model (LLM) is dependent on the quality of information retrieval. As the corpus of contextual information…

信息检索 · 计算机科学 2024-08-01 Sai Ganesh , Anupam Purwar , Gautam B

Social media platforms are a rich source of information these days, however, of all the available information, only a small fraction is of users' interest. To help users catch up with the latest topics of their interests from the large…

信息检索 · 计算机科学 2016-06-24 Cailing Dong , Arvind Agarwal

In recent years, there have been unprecedented technological advances in sensor technology, and sensors have become more affordable than ever. Thus, sensor-driven data collection is increasingly becoming an attractive and practical option…

机器学习 · 计算机科学 2021-12-30 Alireza Abdoli

The rapid growth of location-based services (LBS) has yielded massive amounts of data on human mobility. Effectively extracting meaningful representations for user-generated check-in sequences is pivotal for facilitating various downstream…

机器学习 · 计算机科学 2024-07-26 Letian Gong , Huaiyu Wan , Shengnan Guo , Xiucheng Li , Yan Lin , Erwen Zheng , Tianyi Wang , Zeyu Zhou , Youfang Lin

Time series analysis has achieved great success in cyber security such as intrusion detection and device identification. Learning similarities among multiple time series is a crucial problem since it serves as the foundation for downstream…

机器学习 · 计算机科学 2025-06-23 Shaoyu Dou , Kai Yang , Yang Jiao , Chengbo Qiu , Kui Ren

Time series causal discovery is essential for understanding dynamic systems, yet many existing methods remain sensitive to noise, non-stationarity, and sampling variability. We propose the Validated Consensus-Driven Framework (VCDF), a…

机器学习 · 计算机科学 2026-02-26 Gene Yu , Ce Guo , Wayne Luk

Financial time-series classification (FTC) is extremely valuable for investment management. In past decades, it draws a lot of attention from a wide extent of research areas, especially Artificial Intelligence (AI). Existing researches…

机器学习 · 计算机科学 2019-11-22 Liu Guang , Wang Xiaojie , Li Ruifan

How to predict precise user preference and how to make efficient retrieval from a big corpus are two major challenges of large-scale industrial recommender systems. In tree-based methods, a tree structure T is adopted as index and each item…

信息检索 · 计算机科学 2021-09-23 Daqing Chang , Jintao Liu , Ziru Xu , Han Li , Han Zhu , Xiaoqiang Zhu

The aim of a Content-Based Image Retrieval (CBIR) system, also known as Query by Image Content (QBIC), is to help users to retrieve relevant images based on their contents. CBIR technologies provide a method to find images in large…

计算机视觉与模式识别 · 计算机科学 2020-07-10 Aman Chadha , Sushmit Mallik , Ravdeep Johar

Information Retrieval (IR) is the task of obtaining pieces of data (such as documents or snippets of text) that are relevant to a particular query or need from a large repository of information. While a combination of traditional keyword-…

信息检索 · 计算机科学 2020-09-07 Samarth Rawal , Chitta Baral

Transparent models, which provide inherently interpretable predictions, are receiving significant attention in high-stakes domains. However, despite much real-world data being collected as time series, there is a lack of studies on…

机器学习 · 计算机科学 2025-12-17 Minkyu Kim , Suan Lee , Jinho Kim

Retrieving relevant contexts from a large corpus is a crucial step for tasks such as open-domain question answering and fact checking. Although neural retrieval outperforms traditional methods like tf-idf and BM25, its performance degrades…

计算与语言 · 计算机科学 2021-01-05 Jean Maillard , Vladimir Karpukhin , Fabio Petroni , Wen-tau Yih , Barlas Oğuz , Veselin Stoyanov , Gargi Ghosh

Anomaly detection of time series plays an important role in reliability systems engineering. However, in practical application, there is no precisely defined boundary between normal and anomalous behaviors in different application…

机器学习 · 计算机科学 2020-10-16 Ziling Wu , Ping Liu , Zheng Hu , Bocheng Li , Jun Wang

Time-to-Contact (TTC) estimation is a critical task for assessing collision risk and is widely used in various driver assistance and autonomous driving systems. The past few decades have witnessed development of related theories and…

计算机视觉与模式识别 · 计算机科学 2023-11-07 Yuheng Shi , Zehao Huang , Yan Yan , Naiyan Wang , Xiaojie Guo