- 2024-08-18SciTech-Mathematics-Probability+Statistics-Matlab(Mathworks Inc.): MATLAB官方文档就是非常好的教材
SciTech-Mathematics-Probability+StatisticsProbabilityDistributions:https://ww2.mathworks.cn/help/stats/probability-distributions-1.html?s_tid=CRUX_lftnavWorkingwithProbabilityDistributionsProbabilitydistributionsaretheoreticaldistributionsbas
- 2024-08-12SciTech-Mathematics-Probability+Statistics-Relative Frequency Histogram: Definition + Example
RelativeFrequencyHistogram:Definition+ExampleBYZACHBOBBITTPOSTEDONFEBRUARY19,2020Ofteninstatisticsyouwillencountertablesthatdisplayinformationaboutfrequencies.Frequenciessimplytellushowmanytimesacertaineventhasoccurred.
- 2024-08-12SciTech-Mathematics-Probability+Statistics-7 Steps to Mastering Statistics for Data Science
7StepstoMasteringStatisticsforDataScienceBYBALAPRIYACPOSTEDONJULY19,2024Astrongfoundationinstatisticsisessentialifyou’relookingtobecomeaskilleddatascientist.Fromanalyzingtrendsindatatobuildingpredictivemodelsandma
- 2024-08-12SciTech-Mathematics-Probability+Statistics-7 Key Statistics Concepts
7KeyStatisticsConceptsEveryDataScientistMustMasterBYBALAPRIYACPOSTEDONAUGUST9,2024Statisticsisoneofthemust-haveskillsforalldatascientists.Butlearningstatisticscanbequitethetask.That’swhyweputtogetherthisguidetoh
- 2024-08-11SciTech-Mathematics-Probability+Statistics-[THREE types of Probability]{Subjective, Theoretical, Emp
THREEtypesofProbability:TheoreticalProbabilityEmpiricalProbabilitySubjectiveProbabilityBayes,EmpiricalBayesandModeratedMethodsEmpiricalandtheoreticalpriordistribution|TheBookof…https://www.khanacademy.org/math/cc-seventh-
- 2024-08-08SciTech-Mathematics-Probability+Statistics-5StatisticalConcepts:
5StatisticalConceptsThatOftenConfuseBeginners(AndHowtoUnderstandThem)BYNAHLADAVIESPOSTEDONAUGUST6,20245StatisticalConceptsThatOftenConfuseBeginners(AndHowtoUnderstandThem)Statisticsisn'tjustformathematiciansorscie
- 2024-08-07SciTech-Mathematics-Probability+Statistics-Comparison:Chance + Possibility + Likelihood + Probabilit
https://www.geeksforgeeks.org/what-is-the-difference-between-likelihood-and-probability/1.Chance2.Possibility3.Likelihood4.ProbabilityWhatIstheDifferenceBetween“Likelihood”and“Probability”?LastUpdated:30Jul,2024https://www.geeksforg
- 2024-08-06SciTech-Mathematics-Probability+Statistics-Causation vs. Correlation: From Correlation to Causation:
https://www.statology.org/from-correlation-to-causation-deep-dive-into-data-interpretation/FromCorrelationtoCausation:DeepDiveintoDataInterpretationCorrelationandCausationarekeyconceptsindataanalysis.However,correlationdoesn'tme
- 2024-07-29train_test_split 导致 xgboost 忽略“enable_categorical”
我正在使用xgboost版本2.1.0当使用xgboost.DMatrix()和'enable_categorical'=True将包含类别列的pandas数据帧转换为DMatrix时,所有行为均按预期运行,除非数据帧是sklearntrain_test_split()返回的数据帧,尽管所有列的数据类型仍属于类别。以下代码产生预期的
- 2024-07-27如何比较两个大的温度矩阵数据集并对差异/相似之处进行分类?我如何继续寻找好的方法?
我有以下问题:我想在python中比较热图像(数据以一个大矩阵/每个像素一个值的形式出现)并了解它们的不同。哪些统计方法是相关的?我如何继续找到一个好的测试?在python中比较矩阵/图片的其他方法是什么?我有一些数据集,并且知道其中一些数据应该被测试视为不同的,而有些数据应该被
- 2024-07-23计算参数的ARE
我有以下代码:importnumpyasnpimportmatplotlib.pyplotaspltfromscipyimportintegrate,optimizeimportrandomdefdose(t,y,b,s,c,p,d):target,infectious,virus=yreturnnp.array([-b*target*virus,b*target*virus-s*
- 2024-07-23Python随机库:从帕累托分布进行模拟(使用形状和尺度参数)
根据Python文档,random.paretovariate(alpha)模拟帕累托分布,其中alpha是形状参数。但帕累托分布同时采用形状和尺度参数。如何从指定这两个参数的分布中进行模拟?你说的对,帕累托分布是由形状和尺度参数定义的,而random.paretovariate(alpha)函数只接受形状参数
- 2024-07-19SciTech-Mathematics-Probability+Statistics-Dot products, cosine similarity, text vectors
Dotproducts,cosinesimilarity,textvectorshttps://dev.to/sayemmh/dot-products-cosine-similarity-text-vectors-2lo4SayemHoque,PostedonOct20,2022Dotproducts,cosinesimilarity,textvectorsCosinesimilarityisameasurebetweentwosingledimen
- 2024-07-19SciTech-Mathematics-Probability+Statistics-Descriptive stats + percentiles in numpy and scipy.stats
DescriptiveStats+percentilesinnumpyandscipy.statshttps://dev.to/sayemmh/descriptive-stats-percentiles-in-numpy-and-scipystats-59a7DEVCommunitySayemHoque,PostedonOct13,2022•UpdatedonNov16,2022Descriptivestats+percentilesinnumpy
- 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
- 2024-07-18MATH1041 Statistics for Life
MATH1041 Statistics for Life and Social SciencesTerm 2, 2024MATH1041 AssignmentData: Together with this document, you should have received your unique dataset in an e-mail sent to your official university email address. The
- 2024-07-09Stream流
filterfilter:过滤,就是过滤器,符合条件的通过,不符合条件的过滤掉;//筛选出成绩不为空的学生人数count=list.stream().filter(p->null!=p.getScore()).count();mapmap:映射,他将原集合映射成为新的集合//取出所有学生的成绩List<Double>scoreList=list.stream().map(p-
- 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
- 2024-06-08Linux命令 (network statistics -all numeric programs | Global Regular Expression Print )
文章目录1、第一种解释2、第二种解释3、第三种解释4、第四种解释5、第五种解释6、netstat--help在Windows中,杀死端口占用的博客链接在Linux中,grep的英文全称是GlobalRegularExpressionPrint全局正则表达式打印。它用于在文本中搜索与指定模式匹配的行,并将这
- 2024-05-26【Python快速上手(三十)】- 详解Python random 模块和 statistics 模块
目录Python快速上手(三十)-详解Pythonrandom模块和statistics模块1.Pythonrandom模块1.1生成随机数1.2随机选择和打乱1.3随机分布1.4种子和状态2.Pythonstatistics模块2.1均值和中位数2.2众数2.3方差和标准差2.4协方差和相关性2.5分位数和百分位数2.6
- 2024-04-21sql server 的一些功能
1 添加 applicationname 结果 2 /******SSMS的SelectTopNRows命令的脚本******/setstatisticstimeonsetstatisticsioonSELECTTOP(1000)[ID],[CreateTime],[ProductID],[Count]FROM[Order].[dbo].[Orders]
- 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.
- 2024-03-27Fiddler(5)Statistics数据统计面板性能分析,Inspectors查看请求与响应
Statistics数据统计面板,性能分析 重点:主要关注RTT,体现一个请求从发送到返回响应的时间反映一个请求的性能指标,其中主要需要关注RTT会展示全世界范围的请求平均数据showchart按钮,从饼状图中分别出哪些资源的请求耗时最多,从而对页面的访问进行访问速度优化Inspectors查
- 2024-03-27default_statistics_target参数对PG和MogDB性能影响测试和分析
default_statistics_target参数对PG和MogDB性能影响测试和分析本文出处:https://www.modb.pro/db/230160前段时间在某客户生产环境优化PG查询性能时发现一个很有意思的现象,一个统计信息相关参数可以很大程度上影响SQL的性能。近期在学习MogDB,就对比PG和MogDB做了个
- 2024-03-15mysql语句
1.获取表中全部字段selectGROUP_CONCAT(COLUMN_NAME)frominformation_schema.COLUMNSwheretable_name='表名'andtable_schema='库名';2.数据表字段总数SELECTcount(1)frominformation_schema.COLUMNSWHEREtable_schema='apollo'andtable_na