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14th International Conference on Algorithms and Complexity, CIAC 2025

作者： Bercea, Ioana O. Even, Guy Even, Tomer Domingues, Gabriel Marques KTH Royal Institute of Technology Stockholm Sweden School of Electrical Engineering Tel-Aviv University Tel Aviv Israel Department of Computer Science Technion Haifa Israel

ISBN: (纸本)9783031929311

We present two constant-time dynamic data-structures that support insertions, deletions, and queries with one-sided errors: a space-efficient dynamic (key-only) filter and a compact dynamic data-structure that combines retrieval and filtering (called a key-value filter). A one-sided error occurs when a query for a key not in the dataset is issued and the outcome is wrong, i.e., a "yes" in a filter or a non-null in the key-value filter. The response to a query with a key in the dataset always returns the correct answer, i.e., a "yes" in a filter and the correct value in a key-value filter. The probability of the one-sided error in our data-structures is Ω(1/poly(logn)), where n is the maximum cardinality of the dataset, and the probability space is over the random bits of the data-structure (i.e., random choice of hash function). The computational framework is the Word RAM model. We differentiate between accesses to non-modifiable memory (i.e., read-only memory that stores the program instructions, hash function seed or tables, etc.) and accesses to modifiable memory (i.e., read-write memory that stores the representation of the dataset). We are not aware of previous works that make this distinction in the context of data-structures. Our dynamic filter design requires only a single access to the modifiable memory per operation in the worst-case. We also present a dynamic key-value filter for values of O(loglogn) bits that requires 1+o(1) accesses to the modifiable memory per operation in expectation. Previous dynamic filter designs require, in the worst case, at least two accesses to modifiable memory for queries with keys not in the dataset. Previous dynamic retrieval data-structure designs always require two dictionary accesses for queries with keys not in the dataset even for single bit values. We prove bounds on the number of balls that overflow in a dynamic balls-into-bins random process for a range of bin capacities that extends the Iceberg Lemma of [Bender et

关键词： Hash functions

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In-Memory Template Matching with Approximated PCC Computation Leveraging Memristive System

In-Memory Template Matching with Approximated PCC Computatio...

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IEEE International Symposium on Quality Electronic Design

作者： Sree Nirmillo Biswash Tushar Sk Hasibul Alam Graham Buchanan Rocco Febbo Hritom Das Garrett S. Rose Department of Electrical Engineering and Computer Science The University of Tennessee Knoxville TN USA Department of Electrical and Computer Engineering Oklahoma State University

ISBN: (数字)9798331509422

ISBN: (纸本)9798331509439

Template matching is a well-known computer vision algorithm that involves scanning a template across various parts of an image. The template is correlated within this algorithm using a similarity or matching score, such as the Pearson correlation coefficient (PCC). A chieving a m ore a ccurate match necessitates searching many regions using the PCC metric, which is hindered by the Von Neumann Bottleneck, resulting in increased energy consumption and delays. Therefore, this paper proposes an energy-efficient, c omprehensive memristive in-memory computing architecture for template matching with its physical design, where the PCC computation unit sensor readout unit, DAC, demultiplexers, in-memory memristive computing array, ADC, running sum module, fixed point operation unit and comparator. The PCC equation is approximated, considering the limitations of the hardware characteristics and application requirements. The proposed approximated memristive in-memory based template-matching scheme demonstrates competitive performance compared to the Von Neumann system and achieves around 678× improvement in the power-delay product. Lastly, a threshold-based optimization strategy is suggested to reduce energy consumption in the application.

关键词： Correlation coefficient Energy consumption Voltage In-memory computing Hardware Energy efficiency Delays Computational efficiency Physical design Sensor arrays

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Distortion Minimization with Age of Information and Cost Constraints 21

Distortion Minimization with Age of Information and Cost Con...

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21st International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, WiOpt 2023

作者： Jayanth, S. Pappas, Nikolaos Bhat, Rajshekhar V. Department of Electrical Engineering Indian Institute of Technology Dharwad Dharwad India Department of Computer and Information Science Linköping University Linköping Sweden

ISBN: (纸本)9783903176553

We consider a source node deployed in a real-time monitoring application that needs to sample a stochastic process and convey its state timely and accurately to a destination over a wireless ON/OFF channel. The source can either process a raw sample to determine its current state and transmit that information or transmit the raw sample and let the destination determine the state. The source is subjected to an average cost constraint, and it cannot sample, process, and transmit at all the time instants due to the associated costs. When the destination does not receive information, it uses the previous information as an estimate of the current state, which, if it matches the actual state at the source, the distortion is considered to be zero. The objective is to minimize average expected distortion subject to constraints on the average expected age of information (AoI) of states of interest and costs incurred by the source, where the AoI of a state increases if no status update is received, else drops to unity. We derive a stationary randomized policy (SRP) to solve the formulated problem, for which we obtain the expression for the expected AoI under the SRP using a lumpability argument on the two-dimensional discrete-time Markov chain formed using AoI and instantaneous distortion as states. We extensively study the impact of the system parameters on the average distortion under the SRP and draw significant conclusions. © 2023 IFIP.

关键词： Stochastic systems

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Learning Posterior Distributions in Underdetermined Inverse Problems 9th

Learning Posterior Distributions in Underdetermined Inverse...

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9th International Conference on Scale Space and Variational Methods in computer Vision, SSVM 2023

作者： Runkel, Christina Moeller, Michael Schönlieb, Carola-Bibiane Etmann, Christian Department of Applied Mathematics and Theoretical Physics University of Cambridge Cambridge United Kingdom Department of Electrical Engineering and Computer Science University of Siegen Siegen Germany

ISBN: (纸本)9783031319747

In recent years, classical knowledge-driven approaches for inverse problems have been complemented by data-driven methods exploiting the power of machine and especially deep learning. Purely data-driven methods, however, come with the drawback of disregarding prior knowledge of the problem even though it has shown to be beneficial to incorporate this knowledge into the problem-solving process. We thus introduce an unpaired learning approach for learning posterior distributions of underdetermined inverse problems. It combines advantages of deep generative modeling with established ideas of knowledge-driven approaches by incorporating prior information about the inverse problem. We develop a new neural network architecture ’UnDimFlow’ (short for Unequal Dimensionality Flow) consisting of two normalizing flows, one from the data to the latent, and one from the latent to the solution space. Additionally, we incorporate the forward operator to develop an unpaired learning method for the UnDimFlow architecture and propose a tailored point estimator to recover an optimal solution during inference. We evaluate our method on the two underdetermined inverse problems of image inpainting and super-resolution. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Inverse problems

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Demand Forecasting of a Microgrid-Powered Electric Vehicle Charging Station Enabled by Emerging Technologies and Deep Recurrent Neural Networks

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computer Modeling in engineering & sciences 2025年第5期143卷 2237-2259页

作者： Sahbi Boubaker Adel Mellit Nejib Ghazouani Walid Meskine Mohamed Benghanem Habib Kraiem Department of Computer and Network Engineering College of Computer Science and EngineeringUniversity of JeddahJeddah21959Saudi Arabia The International Centre for Theoretical Physics Trieste UniversityTrieste34151Italy Faculty of Science and Technology University of JjelJijel18000Algeria Department of Civil Engineering College of EngineeringNorthern Border University Arar1321Saudi Arabia SAMATWAIQ for Drones Company Prince Sultan Roadeddah23621Saudi Arabia Physics Department Faculty of ScienceIslamic University of MadinahMadinah4235Saudi Arabia Department of Electrical Engineering College of EngineeringNorthern Border UniversityArar91431Saudi Arabia Center for Scientifc Research and Entrepreneurship Northern Border UniversityArar73213Saudi Arabia

Electric vehicles(EVs)are gradually being deployed in the transportation *** they have a high impact on reducing greenhouse gas emissions,their penetration is challenged by their random energy demand and difficult scheduling of their optimal *** cope with these problems,this paper presents a novel approach for photovoltaic grid-connected microgrid EV charging station energy demand *** present study is part of a comprehensive framework involving emerging technologies such as drones and artificial intelligence designed to support the EVs’charging scheduling *** using predictive algorithms for solar generation and load demand estimation,this approach aimed at ensuring dynamic and efficient energy flow between the solar energy source,the grid and the electric *** main contribution of this paper lies in developing an intelligent approach based on deep recurrent neural networks to forecast the energy demand using only its previous ***,various forecasters based on Long Short-term Memory,Gated Recurrent Unit,and their bi-directional and stacked variants were investigated using a real dataset collected from an EV charging station located at Trieste University(Italy).The developed forecasters have been evaluated and compared according to different metrics,including R,RMSE,MAE,and *** found that the obtained R values for both PV power generation and energy demand ranged between 97%and 98%.These study findings can be used for reliable and efficient decision-making on the management side of the optimal scheduling of the charging operations.

关键词： Microgrid electric vehicles charging station forecasting deep recurrent neural networks energy management system

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Complex-frequency waves:beat loss and win sensitivity

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Light(science & Applications) 2024年第2期13卷 181-183页

作者： Qingqing Cheng Tao L School of Optical-Electrical and Computer Engineering University of Shanghai for Science and TechnologyShanghai200093China Department of Respiratory Diseases and Critical Medicine Quzhou Hospital Affiliated to Wenzhou Medical UniversityQuzhou324000China National Laboratory of Solid State Microstructures College of Engineering and Applied SciencesNanjing UniversityNanjing210093China

Recent experiments have demonstrated that synthesized complex-frequency waves can impart a virtual gain to molecule sensing systems,which can effectively restore information lost due to intrinsic molecular *** enhancement notably amplifies the signal of trace molecular vibrational fingerprints,thereby substantially improving the upper limit of sensitivity.

关键词： thereby Complex limit

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Super-Resolution Displacement Spectroscopic Sensing over a Surface“Rainbow”

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engineering 2022年第10期17卷 75-81页

作者： Lyu Zhou Nan Zhang Chang Chieh Hsu Matthew Singer Xie Zeng Yizheng Li Haomin Song Josep Jornet Yun Wu Qiaoqiang Gan Department of Electrical Engineering The State University of New York at BuffaloBuffaloNY 14260USA Department of Biomedical Engineering The State University of New York at BuffaloBuffaloNY 14260USA Department of Electrical and Computer Engineering Northeastern UniversityBostonMA 02115USA Material Science Engineering Program King Abdullah University of Science and TechnologyThuwal 23955-6900Saudi Arabia

Subwavelength manipulation of light waves with high precision can enable new and exciting applications in spectroscopy,sensing,and medical *** these applications,miniaturized spectrometers are desirable to enable the on-chip analysis of spectral *** particular,for imaging-based spectroscopic sensing mechanisms,the key challenge is to determine the spatial-shift information accurately(i.e.,the spatial displacement introduced by wavelength shift or biological or chemical surface binding),which is similar to the challenge presented by super-resolution ***,we report a unique"rainbow"trapping metasurface for on-chip spectrometers and *** with super-resolution image processing,the low-setting 4×optical microscope system resolves a displacement of the resonant position within 35 nm on the plasmonic rainbow trapping metasurface with a tiny area as small as0.002 *** unique feature of the spatial manipulation of efficiently coupled rainbow plasmonic resonances reveals a new platform for miniaturized on-chip spectroscopic analysis with a spectral resolution of 0.032 nm in wavelength *** this low-setting 4×microscope imaging system,we demonstrate a biosensing resolution of 1.92×109exosomes per milliliter for A549-derived exosomes and distinguish between patient samples and healthy controls using exosomal epidermal growth factor receptor(EGFR)expression values,thereby demonstrating a new on-chip sensing system for personalized accurate bio/chemical sensing applications.

关键词： Rainbow trapping Metasurface Surface plasmon polaritons Super-resolution displacement On-chip biosensing

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Towards an Accurate Measure of Emotional Pupil Dilation Responses: A Model for Removing the Effect of Luminosity 3

Towards an Accurate Measure of Emotional Pupil Dilation Resp...

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3rd IEEE International Conference on Metrology for eXtended Reality, Artificial Intelligence and Neural engineering, MetroXRAINE 2024

作者： Pansara, Zeel Navyte, Gabriele Gillmeister, Helge Cinel, Caterina De Feo, Vito University of Essex Computer Science and Electrical Engineering United Kingdom Institute for Social and Economic Research University of Essex Department of Psychology United Kingdom University of Essex Department of Psychology United Kingdom

ISBN: (纸本)9798350378009

Pupil dilation is a fundamental marker of emotional response, and indicates emotional arousal independently of stimulus valence. As such, pupil dilation provides invaluable insight into emotional engagement and arousal levels. One of the challenges faced when studying emotion response through pupil diameter is distinguishing between dilation caused by light and dilation caused by emotion. This is particularly challenging when examining emotional responses in individuals viewing videos, where luminosity changes constantly occur. To solve this problem, we propose a model that accurately predicts how pupil size changes with brightness, taking into account the nonlinearity of the relationship. Since effects of luminosity and emotion are additive without interacting [1], pure emotional effects on pupil size may be isolated by subtracting the model estimate from the total pupil size recorded in response to the visual stimuli. The general structure of the model was developed from findings in the literature and by analysing data collected from seven participants. The model was then tested on 10 subjects and different monitor models. We obtained an average error of 6.69% (SD:1.05%) and a maximum error of 23.29% (SD: 3.66 %) between the actual pupil size and the pupil size predicted by the model. To the best of our knowledge, this is the only nonlinear model that has been validated on a sample of subjects. This research lays the groundwork for the accurate capture of emotional responses from pupil diameter under varying lighting conditions. © 2024 IEEE.

关键词： Nonlinear simulations

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Tokenization of RECs Using Ethereum Blockchain 4

Tokenization of RECs Using Ethereum Blockchain

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4th IEEE International Conference on Applied Electromagnetics, Signal Processing, and Communication, AESPC 2024

作者： Mishra, Debani Prasad Pramanik, Rupsa Mallick, Soubhagya Ranjan Lenka, Rakesh Kumar International Institute of Information Technology Department of Electrical Engineering Bhubaneswar India School of Technology Woxsen University Hyderabad India Central University of Odisha Koraput Department of Computer Science Odisha India

ISBN: (纸本)9798331528171

Contributing significantly to the accomplishment of renewable energy goals and the overall decrease in carbon emissions, this is crucial in verifying and recording the production of renewable energies. However, a few problems with the current REC market have to do with effectiveness, accessibility, and transparency. An in-depth evaluation of the REC tokenisation concept is presented in this article, with an emphasis on the Ethereum blockchain platform. This article examines the current system's flaws and difficulties through the lens of blockchain technology's potential usage in renewable energy certificate man- agement. Its goal is to provide a framework for comprehensive process control, tracking, and accounting of renewable energy related to transactions. This checks that the distribution is secure and leaves a trail of ownership from the donor to the receivers. It fixes the issue where the power trading centre platform doesn't have the tools to track and evaluate its renewable energy usage. © 2024 IEEE.

关键词： Smart contract

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Investigating Network and System Performance with Molecular Communication in Network Coding for Wireless Applications

Investigating Network and System Performance with Molecular ...

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2024 International Conference on Optimization Computing and Wireless Communication, ICOCWC 2024

作者： Rengarajan, A. Jain, Sandeep Kumar Rastogi, Ajay Department of Computer Science and Information Technology Bangalore India Vivekananda Global University Department of Electrical Engineering Jaipur India Teetthanker Mahaveer University Department of Computing Sciences and Information Technology Uttar Pradesh Moradabad India

ISBN: (纸本)9798350383348

This paper explores the effectiveness of molecular verbal exchange in network Coding (NC) for enhancing community overall performance in Wi-Fi applications. Molecular communique (MC) is an emerging nanoscale verbal exchange approach that allows efficient and dependable transmission of information and indicators over Wi-Fi. By utilizing the variety of molecules, the performance of molecular communique can be appreciably multiplied. This paper examines how network Coding with molecular communication may be applied to improve network performance. Using a case evaluates the efficacy of this approach by looking at a wireless sensor community deployed in a temperate indoor environment. Consequences display growth in facts fee of as much as 30%, indicating a potential development in network performance via using network Coding with molecular conversation. The paper additionally discusses how network Coding can improve community safety, records accuracy, and general latency. Those potential upgrades are promising and future studies are needed to prove the effectiveness of community Coding with molecular verbal exchange in wireless applications. Molecular communique in community coding has emerged as a critical studies place due to its potential to enhance the bodily-layer overall performance of wireless networks. This paper evaluates the community and gadget's overall performance with molecular conversation in community coding for Wi-Fi packages. A theoretical evaluation, pc simulations, and experiments examine the gadget's performance. Moreover, the consequences of diverse parameters such as channel length, range of relay nodes, number of symbols transmitted, and coding fee are evaluated. The results imply that the overall performance of molecular conversation in network coding is superior to regular bodily-layer coding strategies, providing improved community throughput and conversation reliability. Additionally, the power efficiency of the proposed gadget is likewise tes

关键词： appreciably communique community multiplied topologies

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