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Source code representation with deep learning techniques is an important research field. There have been many studies that learn sequential or structural information for code representation. But sequence-based models and non-sequence-models…

Software Engineering · Computer Science 2023-03-15 Kechi Zhang , Zhuo Li , Zhi Jin , Ge Li

Attribute recognition is a crucial but challenging task due to viewpoint changes, illumination variations and appearance diversities, etc. Most of previous work only consider the attribute-level feature embedding, which might perform poorly…

Computer Vision and Pattern Recognition · Computer Science 2020-05-26 Jie Yang , Jiarou Fan , Yiru Wang , Yige Wang , Weihao Gan , Lin Liu , Wei Wu

Keyword spotting in edge devices is becoming increasingly important as voice-activated assistants are widely used. However, its deployment is often limited by the extreme low-power constraints of the target embedded systems. Here, we…

Neural and Evolutionary Computing · Computer Science 2025-03-20 Alejandro Pequeño-Zurro , Lyes Khacef , Stefano Panzeri , Elisabetta Chicca

Time series classification (TSC) is an important task in time series analysis. Existing TSC methods mainly train on each single domain separately, suffering from a degradation in accuracy when the samples for training are insufficient in…

Machine Learning · Computer Science 2025-04-15 Yuxuan Chen , Shanshan Huang , Yunyao Cheng , Peng Chen , Zhongwen Rao , Yang Shu , Bin Yang , Lujia Pan , Chenjuan Guo

Deploying models on target domain data subject to distribution shift requires adaptation. Test-time training (TTT) emerges as a solution to this adaptation under a realistic scenario where access to full source domain data is not available…

Computer Vision and Pattern Recognition · Computer Science 2022-10-17 Yongyi Su , Xun Xu , Kui Jia

Temporal modeling in complex systems requires capturing dependencies across multiple time scales while managing inherent uncertainties. We propose HierCVAE, a novel architecture that integrates hierarchical attention mechanisms with…

Machine Learning · Computer Science 2025-08-27 Yao Wu

Time Series Classification (TSC) covers the supervised learning problem where input data is provided in the form of series of values observed through repeated measurements over time, and whose objective is to predict the category to which…

Shapelets are discriminative subsequences, originally embedded in shapelet-based decision trees but have since been extended to shapelet-based transformations. We propose Castor, a simple, efficient, and accurate time series classification…

Machine Learning · Computer Science 2024-03-21 Isak Samsten , Zed Lee

The comparative performance of hierarchical classification (HC) and flat classification (FC) methodologies in the realm of time series data analysis is investigated in this study. Dissimilarity measures, including Jensen-Shannon Distance…

Machine Learning · Computer Science 2024-02-09 Celal Alagoz

Human beings learn and accumulate hierarchical knowledge over their lifetime. This knowledge is associated with previous concepts for consolidation and hierarchical construction. However, current incremental learning methods lack the…

Computer Vision and Pattern Recognition · Computer Science 2021-10-25 Kai Wang , Xialei Liu , Luis Herranz , Joost van de Weijer

Recent advancements in language modeling have shown promising results when applied to time series data. In particular, fine-tuning pre-trained large language models (LLMs) for time series classification tasks has achieved state-of-the-art…

Machine Learning · Computer Science 2025-06-03 Rachneet Kaur , Zhen Zeng , Tucker Balch , Manuela Veloso

Recently, there has been a significant advancement in designing Self-Supervised Learning (SSL) frameworks for time series data to reduce the dependency on data labels. Among these works, hierarchical contrastive learning-based SSL…

Machine Learning · Computer Science 2025-02-18 Kevin Garcia , Juan Manuel Perez , Yifeng Gao

Conventional Time Series Classification (TSC) methods are often black boxes that obscure inherent interpretation of their decision-making processes. In this work, we leverage Multiple Instance Learning (MIL) to overcome this issue, and…

Machine Learning · Computer Science 2024-03-19 Joseph Early , Gavin KC Cheung , Kurt Cutajar , Hanting Xie , Jas Kandola , Niall Twomey

This paper studies Time Series Extrinsic Regression (TSER): a regression task of which the aim is to learn the relationship between a time series and a continuous scalar variable; a task closely related to time series classification (TSC),…

Machine Learning · Computer Science 2021-02-04 Chang Wei Tan , Christoph Bergmeir , Francois Petitjean , Geoffrey I. Webb

Machine learning for early syndrome diagnosis aims to solve the intricate task of predicting a ground truth label that most often is the outcome (effect) of a medical consensus definition applied to observed clinical measurements (causes),…

Machine Learning · Computer Science 2024-08-27 Michael Staniek , Marius Fracarolli , Michael Hagmann , Stefan Riezler

Current Text-to-Speech (TTS) systems typically use separate models for speech-prompted and text-prompted timbre control. While unifying both control signals into a single model is desirable, the challenge of cross-modal alignment often…

Sound · Computer Science 2026-03-18 Zihao Zheng , Wen Wu , Chao Zhang , Mengyue Wu , Xuenan Xu

Pre-training on time series poses a unique challenge due to the potential mismatch between pre-training and target domains, such as shifts in temporal dynamics, fast-evolving trends, and long-range and short-cyclic effects, which can lead…

Machine Learning · Computer Science 2022-10-18 Xiang Zhang , Ziyuan Zhao , Theodoros Tsiligkaridis , Marinka Zitnik

This paper presents the HRVConformer, a novel deep learning architecture for the classification of hypoxic-ischemic encephalopathy (HIE) using the instantaneous heart rate (HR) signal. Unlike conventional approaches that rely on handcrafted…

Machine Learning · Computer Science 2026-05-27 Shuwen Yu , William P Marnane , Geraldine B. Boylan , Gordon Lightbody

Decision trees are a commonly used class of machine learning models valued for their interpretability and versatility, capable of both classification and regression. We propose ZTree, a novel decision tree learning framework that replaces…

Machine Learning · Computer Science 2025-09-17 Eric Cheng , Jie Cheng

Time series forecasting (TSF) is a central problem in time series analysis. However, as the number of channels in time series datasets scales to the thousands or more, a scenario we define as High-Dimensional Time Series Forecasting…

Machine Learning · Computer Science 2025-09-30 Juntong Ni , Shiyu Wang , Zewen Liu , Xiaoming Shi , Xinyue Zhong , Zhou Ye , Wei Jin