The problem of fuzzy duplicate detection of large texts

Sharapova, Ekaterina; Sharapov, Ruslan

doi:10.18287/1613-0073-2018-2212-270-277

Cited by 8 publications

(4 citation statements)

References 9 publications

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“…Для пьезопластины массой m, упругостью k и внутренними потерями, описываемыми силой трения r, находящейся под действием периодической силы F = F 0 sin( t), уравнение движения относительно деформации x пьезопластины имеет вид [11]: Сравнение выражений (1) и (2) показывает, что колеблющуюся пьезопластину можно заменить эквивалентной электрической схемой замещения, состоящей из чисто электрической емкости C 1 , соединенной параллельно с цепочкой последовательно соединенных индуктивности L, емкости C и активного сопротивления R (рисунок 1а) [10].…”

Section: теоретическое обоснование методикиunclassified

“…где U g -напряжение, подаваемое на пьезопластину; R p -сопротивление развязки. Акустический импеданс Z среды связан с мощностью акустического излучения P и амплитудой смещений в акустической волне A в режиме резонанса следующим соотношением [11]:…”

Section: теоретическое обоснование методикиunclassified

“…Амплитуда акустической волны в исследуемой среде, согласно уравнениям обратного пьезоэффекта, прямопропорциональна падению напряжения U C на емкости C с коэффициентом пропорциональности K [11]:…”

Section: теоретическое обоснование методикиunclassified

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Technique and Device for the Experimental Estimation of the Acoustic Impedance of Viscoelastic Medium

Муравьева¹,

Муравьев²,

Злобин³

et al. 2017

Prib. metody izmer.

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Measuring the characteristics of process fluids allows us to evaluate their quality, biological tissues – to differentiate healthy tissues and tissues with pathologies. Measuring the characteristics of process fluids allows us to evaluate their quality, biological tissues – to differentiate healthy tissues and tissues with pathologies. One of the complex acoustic parameters is the impedance, which allows one to fully evaluate the characteristics of viscoelastic media. Most of impedance methods of measurements require using two or more reference media and the availability of calibrated acoustic transducers. The aim of this work ware introduced a methods and construction for the experimental evaluation of the longitudinal and shear impedance of viscoelastic media based on measuring the parameters of the amplitude-frequency characteristics and calculating the elements of the electric circuit for replacing the piezoelectric element which vibrating in the test medium.The paper introduces a methods and construction of the experimental evaluation of the impedances of viscoelastic media. The suggested methods is allowed measuring longitudinal and shear impedances and determining velocities of longitudinal and transverse ultrasonic waves and the values of the elastic moduli of viscoelastic media, including in various aggregate states. The technique is fairly simple to implement and can be reproduced using simple laboratory equipment.The obtained values of the acoustic impedances of the investigated media are in satisfactory agreement with their reference data. In contrast to the known methods for determining the acoustic impedance, the developed technique allows us to estimate with sufficient accuracy the parameter of the shear impedance of viscoelastic media that is difficult to measure at the frequencies of the megahertz range, which determines the shear modulus of the material and characterizes its resistance to shear deformations. The results of the implementation of the developed technique for the estimation of acoustic parameters for a number of media with zero shear elasticity (alcohol, acetone) and viscoelastic media (glycerin, architectural clay, silicone sealant and glue МР-55 before and after polymerization) are presented.

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Section: теоретическое обоснование методикиunclassified

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Technique and Device for the Experimental Estimation of the Acoustic Impedance of Viscoelastic Medium

Муравьева¹,

Муравьев²,

Злобин³

et al. 2017

Prib. metody izmer.

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“…[1]. Thus, such messages can be considered as fuzzy duplicates [2], the detection of them is not a trivial task.…”

Section: Introductionmentioning

confidence: 99%

Detection of spam using email signatures

Sharapova

Sharapov

2019

Proceedings of the v International Conference Information Technology and Nanotechnology 2019

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Currently, unwanted emails are actively sent to the Internet. Millions copies of emails are sent simultaneously to various users. Often e-mails undergo minor modifications to complicate the detection of spam. The paper proposes options for determining the signature of e-mails that allow identify letters with the same content and structure. Content signature of the letter includes the basic phrases in the text of the e-mail with the exception of names, numeric codes, suspicious words that are not included in the dictionary. Structure signatures incorporate the same type of e-mails, such as paragraphs, tables, images. The paper shows the results of using signatures to detect e-mail spam.

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Reducing the Number of Queries in the Search Text Fuzzy Duplicates

Sharapova

2021

Lecture Notes in Electrical Engineering

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The problem of fuzzy duplicate detection of large texts

Cited by 8 publications

References 9 publications

Technique and Device for the Experimental Estimation of the Acoustic Impedance of Viscoelastic Medium

Technique and Device for the Experimental Estimation of the Acoustic Impedance of Viscoelastic Medium

Detection of spam using email signatures

Reducing the Number of Queries in the Search Text Fuzzy Duplicates

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