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Time series classification (TSC) is fundamental in numerous domains, including finance, healthcare, and environmental monitoring. However, traditional TSC methods often struggle with the inherent complexity and variability of time series…

Machine Learning · Computer Science 2026-02-06 Marcell T. Kurbucz , Balázs Hajós , Balázs P. Halmos , Vince Á. Molnár , Antal Jakovác

The goal of the linear law-based feature space transformation (LLT) algorithm is to assist with the classification of univariate and multivariate time series. The presented R package, called LLT, implements this algorithm in a flexible yet…

Machine Learning · Computer Science 2026-02-06 Marcell T. Kurbucz , Péter Pósfay , Antal Jakovác

The analysis of high-dimensional sparse data is becoming increasingly popular in many important domains. However, real-world sparse tensors are challenging to process due to their irregular shapes and data distributions. We propose the…

Distributed, Parallel, and Cluster Computing · Computer Science 2021-04-28 Ahmed E. Helal , Jan Laukemann , Fabio Checconi , Jesmin Jahan Tithi , Teresa Ranadive , Fabrizio Petrini , Jeewhan Choi

High-dimensional sparse data emerge in many critical application domains such as healthcare and cybersecurity. To extract meaningful insights from massive volumes of these multi-dimensional data, scientists employ unsupervised analysis…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-03-18 Jan Laukemann , Ahmed E. Helal , S. Isaac Geronimo Anderson , Fabio Checconi , Yongseok Soh , Jesmin Jahan Tithi , Teresa Ranadive , Brian J Gravelle , Fabrizio Petrini , Jee Choi

Large time series models (LTMs) have emerged as powerful tools for universal forecasting, yet they often struggle with the inherent diversity and nonstationarity of real-world time series data, leading to an unsatisfactory trade-off between…

Machine Learning · Computer Science 2026-03-03 Yunzhong Qiu , Zhiyao Cen , Zhongyi Pei , Chen Wang , Jianmin Wang

Representation learning for time series using contrastive learning has emerged as a critical technique for improving the performance of downstream tasks. To advance this effective approach, we introduce CaTT (\textit{Contrast All The…

Machine Learning · Computer Science 2025-07-16 Abdul-Kazeem Shamba , Kerstin Bach , Gavin Taylor

We present ALT (ALignment with Textual feedback), an approach that aligns language models with user preferences expressed in text. We argue that text offers greater expressiveness, enabling users to provide richer feedback than simple…

Computation and Language · Computer Science 2025-03-19 Saüc Abadal Lloret , Shehzaad Dhuliawala , Keerthiram Murugesan , Mrinmaya Sachan

Time series prediction has been a long-standing research topic and an essential application in many domains. Modern time series collected from sensor networks (e.g., energy consumption and traffic flow) are often large-scale and incomplete…

Machine Learning · Statistics 2020-06-19 Xinyu Chen , Lijun Sun

We propose a new programming language called ALTA and a compiler that can map ALTA programs to Transformer weights. ALTA is inspired by RASP, a language proposed by Weiss et al. (2021), and Tracr (Lindner et al., 2023), a compiler from RASP…

Machine Learning · Computer Science 2025-06-23 Peter Shaw , James Cohan , Jacob Eisenstein , Kenton Lee , Jonathan Berant , Kristina Toutanova

Transform Invariant Low-rank Textures (TILT) is a novel and powerful tool that can effectively rectify a rich class of low-rank textures in 3D scenes from 2D images despite significant deformation and corruption. The existing algorithm for…

Computer Vision and Pattern Recognition · Computer Science 2013-01-30 Xiang Ren , Zhouchen Lin

While humans effortlessly draw visual objects and shapes by adaptively allocating attention based on their complexity, existing multimodal large language models (MLLMs) remain constrained by rigid token representations. Bridging this gap,…

Computer Vision and Pattern Recognition · Computer Science 2025-11-06 Lingfeng Wang , Hualing Lin , Senda Chen , Tao Wang , Changxu Cheng , Yangyang Zhong , Dong Zheng , Wuyue Zhao

Time series forecasting under distribution shift remains challenging, as existing deep learning models often rely on local statistical normalization (e.g., mean and variance) that fails to capture global distribution shift. Methods like…

Machine Learning · Computer Science 2025-11-18 Yujie Li , Zezhi Shao , Chengqing Yu , Yisong Fu , Tao Sun , Yongjun Xu , Fei Wang

Embedding tables are usually huge in click-through rate (CTR) prediction models. To train and deploy the CTR models efficiently and economically, it is necessary to compress their embedding tables at the training stage. To this end, we…

Machine Learning · Computer Science 2024-08-07 Shiwei Li , Huifeng Guo , Lu Hou , Wei Zhang , Xing Tang , Ruiming Tang , Rui Zhang , Ruixuan Li

In this paper we discuss the theory used in the design of an open source lightmorphic signatures analysis toolkit (LSAT). In addition to providing a core functionality, the software package enables specific optimizations with its modular…

Machine Learning · Computer Science 2023-01-03 D. Damian

In this paper, we present the FATS (Feature Analysis for Time Series) library. FATS is a Python library which facilitates and standardizes feature extraction for time series data. In particular, we focus on one application: feature…

Instrumentation and Methods for Astrophysics · Physics 2015-09-02 Isadora Nun , Pavlos Protopapas , Brandon Sim , Ming Zhu , Rahul Dave , Nicolas Castro , Karim Pichara

Asg is a Python package that solves penalized linear regression and quantile regression models for simultaneous variable selection and prediction, for both high and low dimensional frameworks. It makes very easy to set up and solve…

Computation · Statistics 2021-11-02 Álvaro Méndez Civieta , M. Carmen Aguilera-Morillo , Rosa E. Lillo

Analyzing non-compilable C/C++ submodules without a resolved build environment remains a critical bottleneck for industrial software evolution. Traditional static analysis tools often fail in these scenarios due to their reliance on…

Software Engineering · Computer Science 2026-02-20 Jaid Monwar Chowdhury , Ahmad Farhan Shahriar Chowdhury , Humayra Binte Monwar , Mahmuda Naznin

We consider the problem of fast time-series data clustering. Building on previous work modeling the correlation-based Hamiltonian of spin variables we present an updated fast non-expensive Agglomerative Likelihood Clustering algorithm…

Computational Finance · Quantitative Finance 2022-03-22 Lionel Yelibi , Tim Gebbie

Vision-Language Models (VLMs) such as CLIP have yielded unprecedented performance for zero-shot image classification, yet their generalization capability may still be seriously challenged when confronted to domain shifts. In response, we…

Large-scale visual-language pre-trained models have achieved significant success in various video tasks. However, most existing methods follow an "adapt then align" paradigm, which adapts pre-trained image encoders to model video-level…

Computer Vision and Pattern Recognition · Computer Science 2024-03-22 Yifei Chen , Dapeng Chen , Ruijin Liu , Sai Zhou , Wenyuan Xue , Wei Peng
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