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In this paper we focus on the detection of network anomalies like Denial of Service (DoS) attacks and port scans in a unified manner. While there has been an extensive amount of research in network anomaly detection, current state of the…

Machine Learning · Computer Science 2014-03-04 Tahereh Babaie , Sanjay Chawla , Sebastien Ardon

Knowledge about which nodes provide services is of critical importance for network administrators. Discovery of service nodes can be done by making full use of duplicate element detection in flows. Because the amount of traffic across…

Networking and Internet Architecture · Computer Science 2015-03-17 Zhou Changling , Xiao Jianguo , Cui Jian , Zhang Bei , Li Feng

Optical levitation of nanoscale particles has emerged as a platform for precision measurement. Extremely low damping, together with optical interferometric position detection, makes possible exquisite force measurement and promises…

Quantum Physics · Physics 2019-05-24 Chris Dawson , James Bateman

Monitoring the performance of large shared computing systems such as the cloud computing infrastructure raises many challenging algorithmic problems. One common problem is to track users with the largest deviation from the norm (outliers),…

Databases · Computer Science 2009-07-20 Chiranjeeb Buragohain , Luca Foschini , Subhash Suri

Given prior knowledge of the spectral statistics, the SNR of optical waveforms can be manipulated in a reversible manner. We introduce this concept and discuss its potential application to encryption and context-aware detection of weak…

Optics · Physics 2018-05-02 Jacky C. K. Chan , Bahram Jalali

Optical rotation, a form of optical activity, is a phenomenon employed in various metrological applications and industries including chemical, food, and pharmaceutical. In naturally-occurring, as well as structured media, the integrated…

In this article, a software package code named OPSIAL (Optical Plasma Spectral Calculation And Parameters Retrieval) for rigorously calculating optical plasma spectra and for automatically retrieving plasma parameters is presented. OPSIAL…

Computational Physics · Physics 2018-02-06 Xiaofeng Tan

Open-set panoptic segmentation (OPS) problem is a new research direction aiming to perform segmentation for both \known classes and \unknown classes, i.e., the objects ("things") that are never annotated in the training set. The main…

Computer Vision and Pattern Recognition · Computer Science 2022-08-04 Hai-Ming Xu , Hao Chen , Lingqiao Liu , Yufei Yin

A number of recent works have proposed to solve the line spectral estimation problem by applying off-the-grid extensions of sparse estimation techniques. These methods are preferable over classical line spectral estimation algorithms…

Signal Processing · Electrical Eng. & Systems 2018-02-19 Thomas Lundgaard Hansen , Bernard Henri Fleury , Bhaskar D. Rao

We identify a systematic distortion of the gain-vs.-frequency function of radio telescopes caused by digital flattening ("whitening") of the signal's spectrum followed by re-quantization, a common pair of processes in the signal processing…

Instrumentation and Methods for Astrophysics · Physics 2026-05-08 Ruby Byrne , Larry R. D'Addario , Daniel C. Jacobs , Gregg Hallinan

The study evaluates three background subtraction techniques. The techniques ranges from very basic algorithm to state of the art published techniques categorized based on speed, memory requirements and accuracy. Such a review can…

Computer Vision and Pattern Recognition · Computer Science 2014-05-09 Deepjoy Das , Dr. Sarat Saharia

Automatic discovery and curve fitting of absorption bands in hyperspectral data can enable the analyst to identify materials present in a scene by comparison with library spectra. This procedure is common in laboratory spectra, but is…

Instrumentation and Methods for Astrophysics · Physics 2014-01-23 Adrian J. Brown

This paper studies business cycle patterns in UK sectoral output. It analyzes the distinction between white noise processes and their non-white noise counterparts in the frequency domain and further examines the associated features and…

General Finance · Quantitative Finance 2010-01-27 Peijie Wang , Trefor Jones

The out-of-plane vibration of a rough surface causes an in-plane vibration of its speckle pattern when observed with a defocused optical photographic system. If the frequency of the oscillations is high enough, a time-averaged specklegram…

Optics · Physics 2014-03-24 Jose M. Diazdelacruz

We proposed and demonstrated an optical pulse sampling method for photonic blind source separation. It can separate large bandwidth of mixed signals by small sampling frequency, which can reduce the workload of digital signal processing.

Signal Processing · Electrical Eng. & Systems 2022-06-01 Taichu Shi , Yang Qi , Weipeng Zhang , Paul Prucnal , Ben Wu

Optical spectroscopy constitutes the historical path to accumulate basic knowledge on the atom and its structure. Former work based on fluorescence and resonance ionization spectroscopy enabled identifying optical spectral lines up to…

Atomic Physics · Physics 2020-07-14 Mustapha Laatiaoui , Alexei A. Buchachenko , Larry A. Viehland

This paper extends a recently proposed robust computational framework for constructing the boundary representation (brep) of the volume swept by a given smooth solid moving along a one parameter family $h$ of rigid motions. Our extension…

Graphics · Computer Science 2014-05-30 Bharat Adsul , Jinesh Machchhar , Milind Sohoni

Optical technology may provide important architectures for future computing, such as analog optical computing and image processing. Compared with traditional electric operation, optical operation has shown some unique advantages including…

Optics · Physics 2019-10-23 Shanshan He , Junxiao Zhou , Shizhen Chen , Weixing Shu , Hailu Luo , Shuangchun Wen

Serverless computing is a popular cloud computing paradigm that has found widespread adoption across various online workloads. It allows software engineers to develop cloud applications as a set of functions (called serverless functions).…

Software Engineering · Computer Science 2025-02-13 Jinfeng Wen , Zhenpeng Chen , Jianshu Zhao , Federica Sarro , Haodi Ping , Ying Zhang , Shangguang Wang , Xuanzhe Liu

Automatically detecting or segmenting cracks in images can help in reducing the cost of maintenance or operations. Detecting, measuring and quantifying cracks for distress analysis in challenging background scenarios is a difficult task as…

Computer Vision and Pattern Recognition · Computer Science 2024-01-01 Ram Krishna Pandey , Akshit Achara