Soft Computing Letters最新文献_第3页

Epileptic seizure identification in EEG signals using DWT, ANN and sequential window algorithm 基于小波变换、神经网络和序列窗算法的脑电信号癫痫发作识别

Soft Computing Letters Pub Date : 2021-12-01 Epub Date: 2021-11-06 DOI: 10.1016/j.socl.2021.100026

Ramendra Nath Bairagi, Md Maniruzzaman, Suriya Pervin, Alok Sarker

{"title":"Epileptic seizure identification in EEG signals using DWT, ANN and sequential window algorithm","authors":"Ramendra Nath Bairagi, Md Maniruzzaman, Suriya Pervin, Alok Sarker","doi":"10.1016/j.socl.2021.100026","DOIUrl":"10.1016/j.socl.2021.100026","url":null,"abstract":"<div><p>A patient-specific novel systematic methodology is described in this study for automatic seizure detection from raw electroencephalogram (EEG) signals. Filtering process by means of band-pass finite impulse response (FIR) filter with the frequency range of 0.5–40 Hz is implemented at the outset to eliminate different artifacts and noises mixed with raw EEG signals. As EEGs are highly non-linear and non-stationary signals in nature, discrete wavelet transform (DWT) is then used to analyze the signals in time-frequency domain. DWT with four level decomposition is performed using db6 mother wavelet for feature extraction. A new feature set, composed of eleven non-linear statistical features extracted from each sub-bands resulting from due to wavelet decomposition, is then fed to the input of artificial neural network (ANN) to classify the signal accurately. Finally, a novel algorithm named sequential window algorithm is carried out to improve the classification performance. 99.44% mean classification accuracy, 80.66% average sensitivity, 4.12 s mean latency and 0.2% average false positive rate (FPR) are achieved in this study. This study successfully reduces the latency time with more accuracy and significantly low FPR.</p></div>","PeriodicalId":101169,"journal":{"name":"Soft Computing Letters","volume":"3 ","pages":"Article 100026"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666222121000150/pdfft?md5=b0a46d7fb7bc7f50f0cdf1f37d10e9e5&pid=1-s2.0-S2666222121000150-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88898780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Application of Swarm Robotic System in a Dynamic Environment using Cohort Intelligence 群体机器人系统在动态环境中的应用

Soft Computing Letters Pub Date : 2020-08-01 Epub Date: 2020-08-13 DOI: 10.1016/j.socl.2020.100006

Priya Bannur , Purvi Gujarathi , Karthik Jain , Anand J Kulkarni

{"title":"Application of Swarm Robotic System in a Dynamic Environment using Cohort Intelligence","authors":"Priya Bannur , Purvi Gujarathi , Karthik Jain , Anand J Kulkarni","doi":"10.1016/j.socl.2020.100006","DOIUrl":"10.1016/j.socl.2020.100006","url":null,"abstract":"<div><p>The nature inspired Swarm Intelligence has laid the foundation for many eclectic applications. This work considers a solution to one such application of Search and Rescue operation, based on Cohort Intelligence (CI) methodology which aims at modelling the behaviour of candidates based on the interaction amongst each other to achieve a common goal. Every candidate improves its own behaviour by observing all other candidates in the cohort. This method results in the refinement of the performance of the entire system. The research done so far in this application using CI is associated with robots deployed in a static alien establishment. However, this assumption is not suitable in real-life scenarios. In this paper, the obstacle avoidance and path planning of a swarm of robots was implemented while considering a dynamic alien establishment. The problem of robots occasionally getting stuck in the non-convex obstacles has also been solved using a perturbation technique. The following test cases were implemented - No Obstacle Case (NOC), Stationary Obstacles Case (SOC), Single Dynamic Obstacle Case (SDOC), Multiple Dynamic Obstacles Case with Same Velocity (MDOC-SV) and Multiple Dynamic Obstacles Case with Different Velocities (MDOC-DV).</p></div>","PeriodicalId":101169,"journal":{"name":"Soft Computing Letters","volume":"2 ","pages":"Article 100006"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.socl.2020.100006","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"94303059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Decision support system for dementia patients using intuitionistic fuzzy similarity measure 基于直觉模糊相似测度的痴呆患者决策支持系统

Soft Computing Letters Pub Date : 2020-08-01 Epub Date: 2020-06-20 DOI: 10.1016/j.socl.2020.100005

Hanat Y. Raji-Lawal , Adio T. Akinwale , Olusegun Folorunsho , Amidu O. Mustapha

引用次数: 9

Soft Computing Letters Pub Date : 2020-08-01 Epub Date: 2020-02-14 DOI: 10.1016/j.socl.2020.100002

Justin Kane Gunn, Hadi Akbarzadeh Khorshidi, Uwe Aickelin

引用次数: 7

A hybrid heuristic approach for traffic light synchronization based on the MAXBAND 基于MAXBAND的混合启发式交通灯同步方法

Soft Computing Letters Pub Date : 2019-12-01 Epub Date: 2020-01-13 DOI: 10.1016/j.socl.2019.100001

Xavier Cabezas , Sergio García , Santiago D. Salas

引用次数: 5

Electronic structure principles in static and dynamic situations 静态和动态情况下的电子结构原理

Soft Computing Letters Pub Date : 2007-11-01 DOI: 10.1163/157404007782913336

P. Chattaraj, D. R. Roy, S. Giri

引用次数: 12

Soft Computing Letters Pub Date : 2007-11-01 DOI: 10.1163/157404007782913372

S. Sauer, I. Paidarová

{"title":"Correlated Linear Response Calculations of the C6 Dispersion Coefficients of Hydrogen Halides","authors":"S. Sauer, I. Paidarová","doi":"10.1163/157404007782913372","DOIUrl":"https://doi.org/10.1163/157404007782913372","url":null,"abstract":"Three correlated linear response theory methods - the second order polarization propagator approximation (SOPPA), the second order polarization propagator approxima- tion with coupled cluster singles and doubles amplitudes, SOPPA(CCSD), and multiconfig- urational self-consistent field (MCSCF) linear response theory - were used to determine the electric dipole polarizabilities at imaginary frequencies of the hydrogen halides HX (with X = F, Cl, Br and I). The dynamic polarizabilities were subsequently used to calculate the C6 dispersion coefficient for a pair of interacting HX molecules via numerical integra- tion of the Casimir-Polder formula. The dependence of the polarizabilities, their frequency dependence and C6 coefficients on the one-electron basis set, the level of correlation and zero-point vibrational corrections was studied. Furthermore it was investigated whether relativistic effective core potentials (RECP) could be employed in such calculations. It was found that SOPPA(CCSD) and MCSCF calculations with large active spaces using basis sets of at least double augmented quadruple zeta quality give comparable results which in particular for SOPPA(CCSD) are in close agreement with the available experimental values. Furthermore it could be shown that the results of the RECP calculations are in close agreement with the all electron calculations.","PeriodicalId":101169,"journal":{"name":"Soft Computing Letters","volume":"9 1","pages":"399-421"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78552906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Origin of the Bulk Effect on the NLO Property of P-terphenyl Microcrystalline Structure - Computer Simulations 对特苯微晶结构NLO性能体效应的起源——计算机模拟

Soft Computing Letters Pub Date : 2007-11-01 DOI: 10.1163/157404007782913129

M. Makowska-Janusik

{"title":"Origin of the Bulk Effect on the NLO Property of P-terphenyl Microcrystalline Structure - Computer Simulations","authors":"M. Makowska-Janusik","doi":"10.1163/157404007782913129","DOIUrl":"https://doi.org/10.1163/157404007782913129","url":null,"abstract":"The effect of environment on the nonlinear optical (NLO) property of p-terphenyl is discussed. The performed study is mainly devoted to the simulations of the photoinduced optical second harmonic generation (SHG) and comparison of the obtained data to the literature experimental results. The structure of the investigated system has been modeled by molecular dynamic simulations. Three equivalent structures of the investigated system were built to minimize the statistical structural error. Then the averaged structural data were taken into account to compute the macroscopic optical property. Quantum chemical time-dependent density functional theory (TDDFT) calculations of the first-order nonlinear optical properties were performed. The first-order hyperpolarizability of the isolated molecule was calculated, under the influence of a polarized pumping beam. To evaluate the role of amorphous and crystalline environment the permanent local field in the bulk system was calculated. The obtained results are small; however, their effects on the first hyperpolarizabilities are large in comparison to changes in the linear optical property. Using a rigorous local field approach and the molecular dynamic modeled structure the photoinduced NLO property of p-terphenyl may be reproduced for the high power density laser beam. The obtained results are in good agreement to the experimental data.","PeriodicalId":101169,"journal":{"name":"Soft Computing Letters","volume":"23 1","pages":"285-293"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73055798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Computation of Optical Rotation using Time–Dependent Density Functional Theory 用时变密度泛函理论计算旋光性

Soft Computing Letters Pub Date : 2007-11-01 DOI: 10.1163/157404007782913327

J. Autschbach

引用次数: 36

DFT Optimized All-Electron Basis Sets for Gradient Corrected Functionals: 4 d Transition Metals 梯度校正泛函的DFT优化全电子基集:4 d过渡金属

Soft Computing Letters Pub Date : 2007-11-01 DOI: 10.1163/157404007782913318

P. Calaminici, R. Mejia-Olvera

引用次数: 1