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Information geometry in optimization,machine learning and statistical inference

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Frontiers of Electrical and Electronic Engineering in China 2010年第3期5卷 241-260页

作者： Shun-ichi amari RIKEN Brain Science Institute Saitama 351-0198Japan

The present article gives an introduction to information geometry and surveys its applications in the area of machine learning,optimization and statistical *** geometry is explained intuitively by using divergence functions introduced in a manifold of probability distributions and other general *** give a Riemannian structure together with a pair of dual flatness *** manifolds are dually *** a manifold is dually flat,a generalized Pythagorean theorem and related projection theorem are *** provide useful means for various approximation and optimization *** apply them to alternative minimization problems,Ying-Yang machines and belief propagation algorithm in machine learning.

关键词： information geometry machine learning optimization statistical inference divergence graphical model Ying-Yang machine

Structural, Optical and Luminescence Properties of ZnO Thin Films Prepared by Sol-Gel Spin-Coating Method： Effect of Precursor Concentration

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Chinese Physics Letters 2018年第1期35卷 63-67页

作者： R.amari A.Mahroug A.Boukhari B.Deghfel N.Selmi Laboratory of Materials Physics and Its Applications Department of Physics Faculty of Sciences University of Mohamed Boudiaf M'sila 28000 Algeria Department of Physics Faculty of Sciences University of Mohamed Boudiaf M'sila 28000 Algeria Nuclear Research Center of Birine Ain Oussera Box 180 Algeria

Transparent zinc oxide（ZnO） thin films are fabricated by a simple sol-gel spin-coating technique on glass substrates with different solution concentrations（0.3-1.2 M） using zinc acetate dehydrate [Zn（CH_3COO）_2·2H_2O] as precursor and isopropanol and monoethanolamine（MEA） as solvent and stabilizer, respectively. The molar ratio of zinc acetate dehydrate to MEA is 1.0. X-ray diffraction, ultraviolet-visible spectroscopy and photoluminescence spectroscopy are employed to investigate the effect of solution concentration on the structural and optical properties of the ZnO thin films. The obtained results of all thin films are discussed in detail and are compared with other experimental data.

关键词： ZnO Optical and Luminescence Properties of ZnO Thin Films Prepared by Sol-Gel Spin-Coating Method Structural

Positron Energy Levels in Cd-Based Semiconductors

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Communications in Theoretical Physics 2013年第6期59卷 756-762页

作者： B.Abbar S.Mécabih S.amari N.Benosman B.Bouhafs Laboratoire de Modélisation et de Simulation en Sciences des Département de Physique Université Djillali Liabès

Using the full potential linearized augmented plane wave FP-LAPW method within local density ap-proximation LDA, we have studied positron diffusion and surface emission in Cd-based semiconductors. This requires the calculation of electron and positron band structures. In the absence of experimental and theoretical data for CdX (X=S,Se,Te) we have treated the Si, which has been studied by several authors, as a test case. Predictive results on positron effective masses, deformation potentials, positron work functions, diffusion constants and positron mobilities are presented for CdX (X=S, Se, Te). Our calculated data for Si are compared with experimental and recent theoretical results.

关键词： DFT FP-LAPW semiconductors positron diffusion

Government Underpinning： Failure to Abolish Consumer Slavery

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Journalism and Mass Communication 2016年第1期6卷 26-32页

作者： amari Teal Xavier University of Louisiana New Orleans LA USA

This paper will assess the way in which consumerism is used to manipulate individuals within marginalized groups, specifically those based on race and gender. Following a Marxist framework, this paper will illustrate a symbiotic relationship between the laborer and the capitalist, a hierarchal relationship where mutual dependence encourages unrelenting exploitation. Further focus will center on how these social hierarchies perpetuate a continuous enslavement of individuals politically defined as black and politically defined as woman. These identities are outlined within the framework of two active dichotomies： black/white and man/woman. Both gender and race are key factors in determining an individual＇s identity. Because the hegemonic gender is man, while the hegemonic race is white, any person who does not fit into those two categories simultaneously is underprivileged. Hence the reason why black and woman, both of which have been historically deemed subordinate to white and man, is automatically a part of the underprivileged working class. Since the hierarchal laborer-capitalist relationship is greatly validated by socializations, it cannot be voided by taking legal action alone. However, policy changes addressing education gaps, gender wage gaps, and hiring discrepancies, can assist in decoupling the social constructs of race and gender from class therefore minimizing racial and gender privileges.

关键词： social construct capitalism consumerism dichotomies hegemonic masculinity Blind Hiring,occupational segregation

Reply: Comment on “Geological mapping and mining prospecting in the Aouli inlier (Eastern Meseta, Morocco) based on remote sensing and geographic information systems (GIS)” by Benaissi et al. (China Geology, 5 (2022))

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China Geology 2023年第4期6卷 762-766页

作者： Lakhlifa Benaissi Adnane Tobi Khalid El amari Mohamed Hibti Laboratory of Georesources Department of GeosciencesFaculty of Sciences and TechnicsMoulay Ismail UniversityErrachidia 52000Morocco Laboratory of Georesources Geoenvironment&Civil EngineeringDepartment of Earth SciencesFaculty of Sciences and Technologies of MarrakeshCadi Ayyad UniversityMarrakesh 40000Morocco

We have been pleased that our paper Geological mapping and mining prospecting in the Aouli inlier(Eastern Meseta,Morocco) based on remote sensing and geographic information systems(GIS) was of interest to our colleagu... 详细信息

关键词： (GIS) prospecting Eastern

Development of Techniques for Animal Feed from Corn and Their By-Products

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Animal Husbandry and Feed Science 2016年第6期8卷 353-357,360页

作者： Qi Hongwei Yan Xiaogang Yu Wei Masahiro amari Branch of Animal Science Jilin Academy of Agricultural SciencesGongzhuling 136100China National Institute of Livestock and Grassland Science Tsukuba 305-0901Japan

Research results concerned （ 1 ） quantification of pH value and contents of ammonia nitrogen, volatile fatty acids （VFAs）, and lactic acid, which were indicators of fermentative quality of corn stover silage and other crop by-product silages ; （2） introduction of methods for analyses of fiber content in feeds such as detergent and enzymatic analyses; （3） determination of digestive characteristics in the tureen by artificial digestion trials （ in vitro and in situ ） ; （ 4 ） evaluation of meat productivity and quality by feeding corn stover silage to beef cattle in feeding experiments and; （5） preparation of feed composition and feeding standards for animals in Jilin Province. These results and methods substantially contributed to stabilization of feed supply as well as an increase in the efficiency of meat production, resulting in sustainable development of livestock management in China.

关键词： Corn Maize by-products Silage Techniques Development

On Extensions of LARS by Information Geometry:Convex Objectives and lp -Norm

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On Extensions of LARS by Information Geometry:Convex Objecti...

2011年亚太信号与信息处理协会年会

作者： Masahiro Yukawa Shun-ichi amari Brain Science Institute RIKEN Japan Dept. Electrical and Electronic Engineering Niigata University Japan

This paper addresses extensions of the Least Angle Regression （LARS） algorithm from two different aspects: （i） from quadratic to more general objectives, and （ii） from l1 -norm to lp -norm for p ＜ 1 . The equiangular vector, which is the key of LARS, is reproduced in connection with the Riemannian metric induced by the objective function, thereby making the extensions feasible. It is shown, in the case of p ＜ 1 , that two types of trajectory-the c-trajectory and the λ-trajectory-need to be distinguished by revealing the discontinuity of the λ-trajectory.

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光伏并网电力系统的状态估计

光伏并网电力系统的状态估计

作者： Musungu Richard amari（李查德）华北电力大学(北京)

学位级别：硕士

光伏电网通过元件耦合并入传统电网导致网络节点数量增加,因此需要更多的量测设备来监测系统。然而,实际上不可能为整个电网都配备实时测量功率或光伏参数的设备。在满足冗余要求的前提下,状态估计可以利用现有的量测值来确定电力系统... 详细信息

光伏电网通过元件耦合并入传统电网导致网络节点数量增加,因此需要更多的量测设备来监测系统。然而,实际上不可能为整个电网都配备实时测量功率或光伏参数的设备。在满足冗余要求的前提下,状态估计可以利用现有的量测值来确定电力系统的状态,从而为光伏并网系统的状态估计提供了研究思路。为此,本文分析了用WLS和FDSE进行电网状态估计的方法,并对光伏并网系统的状态估计进行了研究。首先,分析了用于电网状态估计的WLS算法,在IEEE14节点系统中进行验证,算例分析表明该算法在理想的量测值条件下,计算结果是令人满意的,但是该算法无法解决量测中的大误差(噪声)和异常值问题。其次,分析了用于电网状态估计的FDSE算法,同样在IEEE14节点系统中进行验证,与WLS算法一样,FDSE算法不能有效地处理量测中的大误差和异常值问题。一般来说,WLS比FDSE具有更好的计算精度,但需要花费一定的计算时间。由于本文在小型电网中进行研究,节点数较少,对计算要求没有太大的限制,所以算法的选择仅基于准确性。因此,本文提出了一种用于光伏并网系统状态估计的WLS算法,并在IEEE30节点系统中进行验证。算例分析表明该算法的计算结果合理可靠。

关键词：能量管理系统状态估计加权最小二乘法快速分解状态估计光伏并网系统

Comparison of pre-dilation with a non-compliant balloon versus a dual wire scoring balloon for coronary stenting

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World Journal of Cardiovascular Diseases 2013年第6期3卷 395-400页

作者： Kenji Sadamatsu Keiki Yoshida Yuya Yoshidomi Yasuaki Koga Kaori amari Tomotake Tokunou Department of Cardiology Saga-ken Medical Centre Koseikan Saga Japan

Purpose: The aim of this study was to determine the influence of lesion preparation using the dual wire scoring balloon on stent expansion and long-term outcomes. Methods: Forty-six consecutive de novo lesions treated with a single >2.5 mm drug-eluting stent under intravascular ultrasound guidance, using two implantation strategies, were randomly assigned to: 1) pre-dilation with a non-compliant balloon (NC group;n = 23) or 2) pre-dilation with a dual wire scoring balloon (DS group;n = 23). Results: Although the balloon size and the maximal dilation pressure for pre-dilatation was larger (3.33 ± 0.28 vs 3.09 ± 0.33 mm, p = 0.01) and higher (11.6 ± 3.2 vs 8.6 ± 2.7 atm,

关键词： Intravascular Ultrasound Stent Coronary Artery Disease Restenosis Angioplasty