- 2024-11-09SciTech-Mathmatics-BigDataAIML: PCA(Principle Component Analysis)主成分分析 的 数学原理 + 实际应用
SciTech-Mathmatics-BigDataAIML:PCA(PrincipleComponentAnalysis)主成分分析参考链接HowtoCalculatePrincipalComponentAnalysis(PCA)fromScratchinPythonhttps://www.kaggle.com/code/aurbcd/pca-using-numpy-from-scratchPCAusingNumpyfromscratchhttps
- 2024-11-06SciTech-BigDataAIML-Algorithm-Heuristic启发式-
SciTech-BigDataAIML-Algorithm-Heuristic启发式-LDA(LatentDirichiletAllocation)TopicsModel主题模型。LDA(LatentDirichiletAllocation,潜在狄利克雷分布)是一种TopicsModel(主题模型),用于在LargeScaleDocs(大量文档)自动发现HiddenTopics(隐藏主题)。在NLP和
- 2024-09-27SciTech-BigDataAIML-Github-
GeneratinganewGPGkeyGeneratinganewGPGkeyIfyoudon'thaveanexistingGPGkey,youcangenerateanewGPGkeytouseforsigningcommitsandtags.TOCInthisarticleGeneratingaGPGkeyFurtherreadingSupportedGPGkeyalgorithmsGi
- 2024-09-19SciTech-Mathmatics-LaTex: LaTeX:从入门到日常使用
LaTeX:从入门到日常使用发表于2022-02-05|更新于2022-03-20|教程|字数总计:3.6k|阅读时长:12分钟|阅读量:前言:排版工具与书写工具的讨论LaTeX是一种“非所见即所得”的排版系统,用户需要输入特定的代码,保存在后缀为.tex的文件中,通过编译得到所需的pdf文件,例如以下代码:$
- 2024-08-09SciTech-EECS-一次完成“电子”和“机械”统一设计: 3D化PCB(电路板)设计 与 solidworks的3D化产品设计 完美结合
AltiumDesigner做PCB设计。AltiumDesigner导出PCB设计为3D封装的设计文件。SolidWorks导入AltiumDesigner导出的3D设计文件。SolidWorks做整个产品的3D模型。https://wenku.baidu.com/view/138bd7b9700abb68a982fbca.html?wkts=1723191378929&needWelcomeRecomman
- 2024-08-08SciTech-Mathematics-Probability+Statistics-5StatisticalConcepts:
5StatisticalConceptsThatOftenConfuseBeginners(AndHowtoUnderstandThem)BYNAHLADAVIESPOSTEDONAUGUST6,20245StatisticalConceptsThatOftenConfuseBeginners(AndHowtoUnderstandThem)Statisticsisn'tjustformathematiciansorscie
- 2024-08-05SciTech-BigDataAI-ImageProcessing-OpenCV-OpenCV modules
OpenCVmoduleshttps://docs.opencv.org/3.4/IntroductionOpenCVTutorialsOpenCV-PythonTutorialsOpenCV.jsTutorialsTutorialsforcontribmodulesFrequentlyAskedQuestionsBibliographyMainmodules:core.Corefunctionalityimgproc.ImageProcessingim
- 2024-07-19SciTech-BigDataAIML-Algorithm: Github的Hello 算法项目
先记录一下,好不好再读:https://github.com/krahets/hello-algo关于本书本项目旨在打造一本开源免费、新手友好的数据结构与算法入门教程。全书采用动画图解,内容清晰易懂、学习曲线平滑,引导初学者探索数据结构与算法的知识地图。源代码可一键运行,帮助读者在练习中提升编程技能
- 2024-07-18SciTech-Mathmatics-Statistics-NumPy and Statistics: Descriptive Statistics
StatisticsFromNumPyOfficialDocs.https://numpy.org/doc/stable/reference/routines.statistics.htmlOrderstatisticsnumpy.percentilenumpy.percentile(a,q,axis=None,out=None,overwrite_input=False,method='linear',keepdims=False,*,weig
- 2024-07-08SciTech-POLIR-Statistics-重要的统计数据来源 与 数据建模
重要数据来源:官员与人口分布建模:9000万“党员”方可称为“人民”,因为党员才有“参政议政”资格;其他13亿多“群众”大多数是“经营、生产与劳动”,无法(或只有极少数)“参政议政”被“代表”.对于“政事”,只在“人民”(党员)的组织内决策、分级授权与分发及公布?因为全
- 2024-05-15SciTech-BigDataAIML-Tensorflow-Optimizer:优化器
https://keras.io/api/optimizers/OptimizersAvailableoptimizers:SGDRMSpropAdamAdamWAdadeltaAdagradAdamaxAdafactorNadamFtrlLionLossScaleOptimizerUsagewithcompile()&fit()Anoptimizerisoneofthetwoargumentsrequiredforcompilin
- 2024-04-19SciTech-Statistics-英语授课:Business Statistics商务统计
WhatIsaPopulationParameter?ByAlaneLim,AlaneLim,ScienceExpertPh.D.,MaterialsScienceandEngineering,NorthwesternUniversityB.A.,Chemistry,JohnsHopkinsUniversityB.A.,CognitiveScience,JohnsHopkinsUniversityAlaneLimholdsaPh.D.
- 2024-04-19SciTech-BigDataAIML-Adam动量自适应的梯度快速收敛
http://faculty.bicmr.pku.edu.cn/~wenzw/optbook/pages/stograd/Adam.html版权声明此页面为《最优化:建模、算法与理论》、《最优化计算方法》配套代码。代码作者:文再文、刘浩洋、户将,代码整理与页面制作:杨昊桐。Adam算法考虑优化问题:minx∈Rnf(x)=1N∑i=1Nfi(x).Adam算
- 2024-02-24SciTech-Mathmatics-Trigonometric Identities you must remember: 需要记住的三角函数
TrigonometricIdentities(Revision:1.4)TrigonometricIdentitiesyoumustrememberThe“bigthree”trigonometricidentitiesare\(\large\begin{equation}\sin^{2}t+cos^{2}t=1\tag{1}\end{equation}\)\(\large\begin{equation}\sin(
- 2024-02-24SciTech-Mathmatics-automatic equation Numbering / \tag{E} / \label{E} / \ref{E}
https://discourse.devontechnologies.com/t/numbering-and-tagging-equations-in-mathjax/69524/2IwentaroundincirclestryingtofigureouthowtonumberandtagequationsinMathJaxinDT3.TheMathJaxDocsshowshowtodoautomaticequationnumbering21
- 2024-02-21SciTech-Mathmatics-Multiplication Properties
https://byjus.com/maths/multiplication/Inmathematics,multiplicationisamethodoffindingtheproductoftwoormorenumbers.Itisoneofthebasicarithmeticoperations,thatweuseineverydaylife.Themajorapplicationwecanseeinmultiplicatio
- 2024-02-20SciTech-Mathmatics-LinearAlgebra-特征值和特征向量
1基本定义将\(n\)阶方阵\(M\)分解出如下式的非零n维向量\(v\)作为特征向量和\(\lambda\)作为特征向量;$\largeMv=\lambdav,\v\neq0$上式不仅可以分解出,甚至还可以分解出多个特征向量与特征值;实例:对物体施加作用力F产生运动,运动可以分解到3D空间
- 2024-02-20SciTech-Mathmatics-UNIQUE FACTORIZATION THEOREM
SciTech-Mathmatics-UNIQUEFACTORIZATIONTHEOREMElementary_Number_Theory:https://math.libretexts.org/Bookshelves/Combinatorics_and_Discrete_Mathematics/Elementary_Number_Theory_(Clark)/01%3A_Chapters/1.11%3A_Unique_Factorizationhttps://public.csusm.edu/
- 2024-02-20SciTech-Physics-The Feynman Lectures on Physics
https://www.feynmanlectures.caltech.eduCaltech'sDivisionofPhysics,MathematicsandAstronomyandTheFeynmanLecturesWebsitearepleasedtopresentthisonlineeditionofTheFeynmanLecturesonPhysicsFeynman•Leighton•SandsRestoremyview
- 2024-02-18SciTech-BigDataAIML-Model:模型-
自变量/解释变量:决定因变量/被解释变量的变量。因变量/被解释变量:被自变量/解释变量影响的变量。内生变量:在模型内部被决定的变量。外生变量:独立于模型的其他解释变量的解释变量,模型的其他解释变量的变化不影响该变量的变化,而我们要研究的外生变量的变化反过来会造
- 2024-02-16SciTech-Printing-精密成像+印刷-静电成像(激光打印/成像)的原理介绍
静电成像的原理介绍(2014-01-0917:32:11)标签:静电成像静电成像原理文化 分类:印艺技术静电成像是利用光导材料的“光敏变电阻”特性:在黑暗中为绝缘体、在光照条件时电阻值下降(阻值可变化1000倍以上)的特性来成像。常用有OPC(有机化合物)光导材料/A-Si陶瓷/Se(硒)半导体
- 2024-02-06SciTech-Anatomy-Tooth
0.牙:成人牙:称为恒牙,上下各16颗,以牙科医师面对患者视角,对上下两排牙编号:-上排:从左到右编号1号~16号,-下排:从右到左编号17号~32号,儿童牙:称为乳牙,上下各10颗,1.Anatomy2.Number
- 2024-02-05SciTech-System Theory-系统轮
系统管理的目标由系统论可知:系统必要性:要建立合理的系统,以便对外部环境和内部运行进行管理,统一理论与实际,质与量的需要。系统目标是系统所希望实现的结果,只是根据不同的系统,所要研究和解决的问题,可以确定不同的目标;系统目标:反映着系统外部环境的变化及适配其的调整,他是系统
- 2023-12-31SciTech-BigDataAIML-Tensorflow-Introduction to Tensors
https://tensorflow.google.cn/guide/tensorIntroductiontoTensorsTensorsaremulti-dimensionalarrayswithauniformtype(calledadtype).tf.dtypesincludedallsupporteddtypes.Ifyou'refamiliarwithNumPy,tensorsare(kindof)likenp.arrays.
- 2023-12-21SciTech-OS-MacOS的CSP(System Integrity Protection)系统正直性保护系统
bash-3.2#csrutilusage:csrutil<command>ModifytheSystemIntegrityProtectionconfiguration.Allconfigurationchangesapplytotheentiremachine.Availablecommands:clearCleartheexistingconfiguration.disableDis