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Conversational agents are usually designed for closed-world environments. Unfortunately, users can behave unexpectedly. Based on the open-world environment, we often encounter the situation that the training and test data are sampled from…

计算与语言 · 计算机科学 2022-04-25 Petr Lorenc , Tommaso Gargiani , Jan Pichl , Jakub Konrád , Petr Marek , Ondřej Kobza , Jan Šedivý

Online system identification algorithms are widely used for monitoring, diagnostics and control by continuously adapting to time-varying dynamics. Typically, these algorithms consider a model structure that lacks parsimony and offers…

系统与控制 · 电气工程与系统科学 2025-04-28 Koen Classens , Rodrigo A. González , Tom Oomen

A variety of complex biological, natural and man-made systems exhibit non-Markovian dynamics that can be modeled through fractional order differential equations, yet, we lack sample comlexity aware system identification strategies. Towards…

系统与控制 · 电气工程与系统科学 2025-06-23 Xiaole Zhang , Vijay Gupta , Paul Bogdan

The properties of the Gabor and Morlet transforms are examined with respect to the Fourier analysis of discretely sampled data. Forward and inverse transform pairs based on a fixed window with uniform sampling of the frequency axis can…

数据分析、统计与概率 · 物理学 2013-07-23 Robert W. Johnson

The identification of phases of matter is a challenging task, especially in quantum mechanics, where the complexity of the ground state appears to grow exponentially with the size of the system. We address this problem with state-of-the-art…

统计力学 · 物理学 2018-04-18 Patrick Huembeli , Alexandre Dauphin , Peter Wittek

Window functions describe, as a function of orbital period, the probability that an existing planetary transit is detectable in one's data for a given observing strategy. We show the dependence of this probability upon several strategy and…

天体物理学 · 物理学 2009-11-13 Kaspar von Braun , David R. Ciardi

In this paper, we investigate the impacts of transmitter and receiver windows on orthogonal time-frequency space (OTFS) modulation and propose a window design to improve the OTFS channel estimation performance. Assuming ideal pulse shaping…

信息论 · 计算机科学 2021-01-29 Zhiqiang Wei , Weijie Yuan , Shuangyang Li , Jinhong Yuan , Derrick Wing Kwan Ng

Adaptation to out-of-distribution data is a meta-challenge for all statistical learning algorithms that strongly rely on the i.i.d. assumption. It leads to unavoidable labor costs and confidence crises in realistic applications. For that,…

计算机视觉与模式识别 · 计算机科学 2022-07-26 Jingye Wang , Ruoyi Du , Dongliang Chang , Kongming Liang , Zhanyu Ma

In image anomaly detection, Autoencoders are the popular methods that reconstruct the input image that might contain anomalies and output a clean image with no abnormalities. These Autoencoder-based methods usually calculate the anomaly…

图像与视频处理 · 电气工程与系统科学 2021-05-24 Masaki Nakanishi , Kazuki Sato , Hideo Terada

The abundance of functional observations in scientific endeavors has led to a significant development in tools for functional data analysis (FDA). This kind of data comes with several challenges: infinite-dimensionality of function spaces,…

统计方法学 · 统计学 2015-12-11 J. S. Marron , James O. Ramsay , Laura M. Sangalli , Anuj Srivastava

The knowledge of channel statistics can be very helpful in making sound opportunistic spectrum access decisions. It is therefore desirable to be able to efficiently and accurately estimate channel statistics. In this paper we study the…

信息论 · 计算机科学 2015-03-17 Quanquan Liang , Mingyan Liu

Identifiability and sloppiness are investigated in this paper for the parameters of a descriptor system based on its frequency response samples. Two metrics are suggested respectively for measuring absolute and relative sloppiness of the…

系统与控制 · 电气工程与系统科学 2024-07-02 Tong Zhou

Although classical spectral analysis is a natural approach to characterise linear systems, it cannot describe a chaotic dynamics. Here, we propose the ordinal spectrum, a method based on a spectral transformation of symbolic sequences, to…

数据分析、统计与概率 · 物理学 2020-09-08 Mario Chavez , Johann H. Martinez

Time-frequency (TF) filtering of analog signals has played a crucial role in the development of radio-frequency communications, and is currently being recognized as an essential capability for communications, both classical and quantum, in…

量子物理 · 物理学 2020-10-29 Michael G. Raymer , Konrad Banaszek

The study focuses on the applicability of system identification to identify building and system dynamics for climate control design. The main problem regarding the simulation of the dynamic response of a building using building simulation…

计算工程、金融与科学 · 计算机科学 2012-04-02 A. W. M. , van Schijndel , P. W. M. H. , Steskens

A strictly time-domain formulation of the log-sensitivity of the error signal to structured plant uncertainty is presented and analyzed through simple but representative classical and quantum systems. Results demonstrate that across a wide…

量子物理 · 物理学 2024-06-24 S. O'Neil , S. G. Schirmer , F. C. Langbein , C. A. Weidner , E. Jonckheere

Though the topic of causal inference is typically considered in the context of classical statistical models, recent years have seen great interest in extending causal inference techniques to quantum and generalized theories. Causal…

计算机科学中的逻辑 · 计算机科学 2023-11-16 Isaac Friend , Aleks Kissinger

For the purpose of monitoring the behavior of complex infrastructures (e.g. aircrafts, transport or energy networks), high-rate sensors are deployed to capture multivariate data, generally unlabeled, in quasi continuous-time to detect…

The method described in the first part for frequency-selectively measuring the transfer function and the noise power spectral density of the superimposed noise at the output of a disturbed, real system with nonlinearities using windowing…

信号处理 · 电气工程与系统科学 2025-11-20 Helmut Repp

Optical interference is not only a fundamental phenomenon that has enabled new theories of light to be derived but it has also been used in interferometry for the measurement of small displacements, refractive index changes and surface…

光学 · 物理学 2021-10-28 Chen Yang , Zhi-Yuan Zhou , Yan Li , Shi-Kai Liu , Zheng Ge , Guang-Can Guo , Bao-Sen Shi