A novel trust recommendation model for mobile social network based on user motivation

Yang, Gelan; Yang, Qin; Jin, Huixia

doi:10.1007/s10660-019-09344-9

Cited by 19 publications

(9 citation statements)

References 28 publications

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“…By contrast, that of λ 2 reflects the direction of minimum curvature (axial direction of the blood vessel). Hence, another parameter of arctan ðλ 2 /λ 1 Þ that represents the direction angle of the eigenvectors was introduced in [25][26][27][28]. Therefore, the proposed new vascular response function is…”

Section: Improved Frangi Filtermentioning

confidence: 99%

Blood Vessel Segmentation of Fundus Retinal Images Based on Improved Frangi and Mathematical Morphology

Feng

Wang

et al. 2021

Computational and Mathematical Methods in Medicine

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An improved blood vessel segmentation algorithm on the basis of traditional Frangi filtering and the mathematical morphological method was proposed to solve the low accuracy of automatic blood vessel segmentation of fundus retinal images and high complexity of algorithms. First, a global enhanced image was generated by using the contrast-limited adaptive histogram equalization algorithm of the retinal image. An improved Frangi Hessian model was constructed by introducing the scale equivalence factor and eigenvector direction angle of the Hessian matrix into the traditional Frangi filtering algorithm to enhance blood vessels of the global enhanced image. Next, noise interferences surrounding small blood vessels were eliminated through the improved mathematical morphological method. Then, blood vessels were segmented using the Otsu threshold method. The improved algorithm was tested by the public DRIVE and STARE data sets. According to the test results, the average segmentation accuracy, sensitivity, and specificity of retinal images in DRIVE and STARE are 95.54%, 69.42%, and 98.02% and 94.92%, 70.19%, and 97.71%, respectively. The improved algorithm achieved high average segmentation accuracy and low complexity while promising segmentation sensitivity. This improved algorithm can segment retinal vessels more accurately than other algorithms.

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Section: Improved Frangi Filtermentioning

confidence: 99%

Blood Vessel Segmentation of Fundus Retinal Images Based on Improved Frangi and Mathematical Morphology

Feng

Wang

et al. 2021

Computational and Mathematical Methods in Medicine

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“…Sometimes, if feature extraction requires a lot of computing time, and the time that can be used is limited, a high-level algorithm can be used to control the feature extraction class, so only the part of the image is used to find the feature. Because many computer image algorithms use feature extraction as its primary computing step, a large number of feature extraction algorithms have been developed, and their extraction features are varied, and their computational complexity and repeatability are very different [36].…”

Section: Basic Conceptsmentioning

confidence: 99%

Application of Feature Extraction Algorithm in the Construction of Interactive English Chinese Translation Mode

Dong

Yang

Zhang

2021

Wireless Communications and Mobile Computing

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In the process of English translation, traditional interactive English translation system is not obvious in English semantic context. The optimal feature selection process does not achieve the optimal translation solution, and the translation accuracy is low. Based on this, this paper designs an interactive English Chinese translation system based on a feature extraction algorithm. By introducing the feature extraction algorithm, the optimal translation solution is selected, and the semantic mapping model is constructed to translate the best translation into English Chinese translation. The real experiment results show that the interactive English Chinese translation system based on feature extraction algorithm can get the best solution.

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“…The accelerated depreciation policy of fixed assets is to advance the income tax deduction, which can alleviate the impact of technology upgrading and industry competition, and avoid the tax deduction lag caused by the rapid elimination of the market. On the one hand, this early deduction forms the indirect capital supply for R&D investment; on the other hand, it forms a certain time value, thus reducing the cost of R&D investment [17].…”

Section: Theoretical Analysis and Research Hypothesismentioning

confidence: 99%

Accelerated Depreciation Tax Credit and Corporate Financialization Based on the PSM-DID Model

Bei

Wang

et al. 2020

Wireless Communications and Mobile Computing

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In this paper, we use the data of China’s manufacturing listed companies from 2009 to 2018, adopt the method of propensity score matching and double difference (PSM-DID) to solve the sample’s selective bias, and select the accelerated depreciation policy of fixed assets issued by China in 2014 as a quasi-natural experiment to verify the robustness of the empirical results, which will affect the R&D investment of manufacturing enterprises and the structural tax reduction of China. This paper makes an empirical study on the effect of fixed asset investment to restrain the financialization of manufacturing enterprises. The results show that (1) accelerated depreciation policy of fixed assets significantly promotes the R&D investment and fixed asset investment of enterprises and reduces the level of enterprise financialization; (2) accelerated depreciation of fixed asset local tax policy, through guiding the R&D investment, fixed asset investment, and deferred income tax acquisition of enterprises. It guides the investment of enterprises to the real economic field, thus reducing the financial assets of enterprises. The investment has restrained the financial trend of real enterprises. The conclusion of this paper is of practical significance to support the formulation and implementation of the national structural tax reduction policy and to clarify the regulatory role and mechanism of the structural tax reduction policy.

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A novel trust recommendation model for mobile social network based on user motivation

Cited by 19 publications

References 28 publications

Blood Vessel Segmentation of Fundus Retinal Images Based on Improved Frangi and Mathematical Morphology

Blood Vessel Segmentation of Fundus Retinal Images Based on Improved Frangi and Mathematical Morphology

Application of Feature Extraction Algorithm in the Construction of Interactive English Chinese Translation Mode

Accelerated Depreciation Tax Credit and Corporate Financialization Based on the PSM-DID Model

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