结果:找到“levels”相关内容176个,排序为按回复时间降序,搜索更多相关帖子请点击“高级
innovation management and enterpreneurship创新管理与企业家精神
0 个回复 - 161 次查看 innovation management and enterpreneurship创新管理与企业家精神ICN BACHELOR & NANCY Dr. Philippe REBIERE Themes Overview of the study field with basic definitions concepts and typologies Strate ...2024-4-29 12:45 - 2023D - 现金交易版
《大数据探索性分析》程序代码 吴翌琳、房祥忠 人大出版社
0 个回复 - 200 次查看 《大数据探索性分析》程序代码 吴翌琳、房祥忠 人大出版社 第二章第二节一、 确定样本容量x=seq(6,20,by =0.1)y=2^(x) plot(x,y)samp = round(y)[-c(1:51)][-c(69:90)] n2024-4-19 14:00 - Laity_通 - 现金交易版
经典力学简介/经典力学导论:习题+答案详解David Morin Introduction to Classical
1 个回复 - 168 次查看 经典力学简介/经典力学导论:习题+答案详解David Morin Introduction to Classical Mechanics Introduction to Classical Mechanics With Problems and Solutions David Morin This document covers all the ...2024-3-14 12:35 - lotus_sss - 现金交易版
Phrasal Verbs and Idioms in Context - Levels B2-C1
1 个回复 - 457 次查看 Phrasal Verbs and Idioms in Context: for levels B2-C1, 2018 edition. Enjoy!2023-3-6 01:41 - eyelash2023 - 外语学习
Optimizing Inventory Levels Within Intel's Channel Supply Demand Operations
5 个回复 - 1013 次查看 【作者(必填)】 Brian Wieland Channel Supply Demand Operations, Intel Corporation, Folsom, California 95630 brian.j.wieland@intel.com, Pat Mastrantonio Channel Supply Demand Operations, Intel Corp ...2014-3-21 10:59 - y77 - 求助成功区
求SAGE论文Rates of Return, Concentration Levels and Strategic Change in the Brit
2 个回复 - 422 次查看 【作者(必填)】A. J. Arnold, S. McCartney 【文题(必填)】Rates of Return, Concentration Levels and Strategic Change in the British Railway Industry, 1830–1912 【年份(必填)】2005 【全文链接或数 ...2020-9-27 05:04 - v2abgundam - 求助成功区
Ontology, Levels of Society, and Degrees of Generality
14 个回复 - 1116 次查看 【作者(必填)】Hokyu Hwang and Jeannette Colyvas 【文题(必填)】Ontology, Levels of Society, and Degrees of Generality: Theorizing Actors as Abstractions in Institutional Theory 【年份(必填)】2019 ...2020-6-27 10:28 - oxfordyy - 求助成功区
Drewry:Container terminal utilisation levels set to rise
1 个回复 - 612 次查看 Container terminal utilisation levels set to rise…trade wars permitting London, UK, 01 August 2018 – The medium term outlook for global container port demand growth is positive thanks to strong und ...2018-8-16 14:59 - arthur_kong - 行业分析报告
Predicting concentration levels of air pollutants by transfer learning and recur
1 个回复 - 364 次查看 【作者(必填)】 【文题(必填)】 Predicting concentration levels of air pollutants by transfer learning and recurrent neural network 【年份(必填)】 【全文链接或数据库名称(选填)】https://www.scien ...2020-3-9 13:47 - ticket1988 - 求助成功区
Analysis of Linear Models with One Factor Having Both Fixed and Random Levels
4 个回复 - 308 次查看 【作者(必填)】 [/backcolor]Njuho, Peter M.[/backcolor],Milliken, George A.[/backcolor][/backcolor] 【文题(必填)】Analysis of Linear Models with One Factor Having Both Fixed and Random Levels[/ba ...2019-4-13 22:46 - andy162639 - 求助成功区
AOM: Integrating Diversity at Different Levels: Multilevel Human Capital
2 个回复 - 617 次查看 【作者(必填)】 Implications for Team Effectiveness 【文题(必填)】 Integrating Diversity at Different Levels: Multilevel Human Capital, Social Capital, and Demographic Diversity and Their Sabina T ...2019-11-18 03:22 - yinhezhiwang - 求助成功区
分组回归后,进行比较或者输出时出现too many base levels specified的处理
3 个回复 - 3060 次查看 分组回归可以呈现结果,但是在执行esttab命令想输出分组结果时,出现错误too many base levels specified 在论坛搜索了集中解决的方法,最后尝试了@xingxf的方法,终于解决啦。 贴一下大神之前的回答。可以去原问 ...2017-8-21 17:00 - 新晴sunshine - Stata专版
但他出现multiple conflicting factor levels specified,这是为什么,要怎么改
1 个回复 - 598 次查看 但他出现multiple conflicting factor levels specified,这是为什么,要怎么改[/backcolor]2024-5-29 21:13 - 井仪1800 - Stata专版
esttab怎么运行后总显示unmatched list of significance symbols and levels
65 个回复 - 47818 次查看 各位朋友能帮我看看我的命令有什么问题吗?总是显示错误,如题!万分感谢啊 logit enforcing $xxx est store lo probit enforcing $xxx est store pr local s"using tab3_reg,csv" local m"logit ...2017-2-12 11:51 - lijinning - Stata专版
平行趋势检验画图时,出现invalid 'baselevels'
2 个回复 - 653 次查看 平行趋势检验画图时,出现invalid 'baselevels' ,求帮助 代码如下: xtreg y did x1 x2 x3 x4 x5 i.year,fe robust coefplot,baselevels keep(pre_* current post_*) vertical coeflabels(pre_8="-8" pre_7= ...2024-1-8 16:34 - 二二二ER - Stata专版
stata中的unmatched list of significance symbols and levels r(198);什么意思呀
6 个回复 - 12928 次查看 大家好,输入esttab ols_no_iq ols_with_iq tsls /// liml using iv.rtf, star(0.1 0.05 0.01) 之后显示unmatched list of significance symbols and levels r(198);是什么意思呢,要怎么改进呢2019-9-22 19:31 - 欢欢小太阳 - Stata专版
Trade, income levels, and dependence: Michael Michaely
1 个回复 - 1692 次查看 【作者(必填)】Michael Michaely 【文题(必填)】Trade, income levels, and dependence 【年份(必填)】1986 【全文链接或数据库名称(选填)】2016-1-13 21:37 - 1282815509 - 文献求助专区
请教levelsof命令和foreach语句
8 个回复 - 10368 次查看 请教一下,我按照stata的帮助文件里的levelsof命令的说明,利用auto数据集,写了如下命令: levelsof rep78, local(mylevs) foreach c of local mylevs{ display "`c'" } 执行第一行levelsof命令后,结果是1 ...2017-3-21 16:01 - qq1032450349 - Stata专版
求教,factor函数设置levels后,数据变为NA是什么原因?
0 个回复 - 750 次查看 分析GEO数据集,当factor()函数加入levels=,数据变为NA。 附源代码: #if (!requireNamespace("BiocManager", quietly = TRUE)) #install.packages("BiocManager") #BiocManager::install("GEOquery",force ...2022-10-12 11:04 - liangweny - R语言论坛
too many base levels specified的问题如何处理呢
7 个回复 - 10092 次查看 too many base levels specified的问题如何处理呢 再做分组回归系数是否存在显著差异的问题。 奇了怪了,前面 有一个分组变量 confidence也是1,0有两个取值 reg debt2 p_locgn roe size uniq ndts yof ...2013-12-8 21:57 - lijian1981112 - Stata专版
求书:John Maxwell的5 levels of leadership
0 个回复 - 215 次查看 如题,谢谢!2020-5-17 20:01 - gracet_17 - 博弈论
r语言length(unique())和levels(unique())的结果为什么会不同
0 个回复 - 1110 次查看 时间序列降频的时候想把时间分组,用tapply取每组均值,然后每组时间取一个唯一值 用了四种方法 1 merch 2 length(unique()) 3 levels(unique()) 4 把时间转换为数字格式,tapply然后再转回日期 但是得到的数据有100 ...2020-5-8 12:42 - yttrium_ - 爱问频道
Predicting concentration levels of air pollutants
1 个回复 - 444 次查看 【作者(必填)】 【文题(必填)】 Predicting concentration levels of air pollutants by transfer learning and recurrent neural network 【年份(必填)】 【全文链接或数据库名称(选填)】https://www.scien ...2020-4-10 16:26 - ticket1988 - 求助成功区
【学习笔记】University to withhold offers until after A levels
0 个回复 - 344 次查看 University to withhold offers until after A levels2020-2-29 19:20 - yai5320 - Forum
Drop impact reliability analysis of CSP packages at board and product levels thr
1 个回复 - 399 次查看 【作者(必填)】Liping Zhu 【文题(必填)】Drop impact reliability analysis of CSP packages at board and product levels through modeling approaches 【年份(必填)】2005 【全文链接或数据库名称(选填)】 ...2019-8-4 17:21 - victorbian - 求助成功区
Technical English (4 levels), Course Book(全) + Workbook + Teacher's Book + MP3
7 个回复 - 3284 次查看 Technical English (Pearson Longman) by David Bonamy Technical English is a four-level course for students in technical or vocational education, and for company employees in training ...2016-10-1 13:00 - cmwei333 - 外语学习
A International Industrialization Levels from 1750 to 1980
0 个回复 - 858 次查看 A International Industrialization Levels from 1750 to 1980 Proquest2019-6-4 04:04 - lomberer01 - 悬赏大厅
7L: The Seven Levels of Communication: Go From Relationships to Referrals
13 个回复 - 666 次查看 September 2014 | English | PDF | ISBN-10: 1940363217 | 124 Page Can you imagine receiving a referral each and every day? Neither could real estate agent Rick Masters. (7L) The Seven Levels of ...2018-5-11 10:19 - igs816 - 经管书评
stata进行回归时出现there are too many base levels specified
9 个回复 - 6100 次查看 正常简单的四个回归,然后分别 est store m1,m2,m3,m4 最后输出结果的命令是 esttab m1 m2 m3 m4 using 1.rtf, b(%6.3f) t(%6.2f) scalar(r2 r2_a N F) star(* 0.1 ** 0.05 *** 0.01) nogap replace 就出 ...2014-7-29 09:52 - beanyao - Stata专版
National Character Does Not Reflect Mean Personality Trait Levels in 49 Cultures
2 个回复 - 589 次查看 This is the manuscript version of an article that was published in: Science Magazine 310(5745):pp. 96-100. National Character Does Not Reflect Mean Personality Trait Levels in 49 Cultures ...2018-10-17 10:51 - fin-qq - 商学院
levels返回null
8 个回复 - 8527 次查看 自学r语言,txt文件打开后,第一列数据“58251[/backcolor]”等默认V1,将V1命名为zd,想查看zd的水平(zd有重复出现的数字)结果返回null,使用table查看可以返回频数,为什么levels返回了null,请大家解惑,谢谢。 ...2018-3-15 10:41 - diyleng22 - R语言论坛
用R读入数据的时候出现levels
6 个回复 - 16897 次查看 [2458] 603003.SH 603008.SH 603077.SH 603123.SH 603128.SH 603167.SH 603333.SH [2465] 603366.SH 603399.SH 603766.SH 603993.SH 2468 Levels: 000002.SZ 000004.SZ 000005.SZ 000006.SZ 000007.SZ ... 603993. ...2013-6-19 09:21 - 迷途mitu - R语言论坛
levelsof求助
0 个回复 - 1369 次查看 请问大家,为什么会出现图中的情况?2018-7-13 10:19 - 伟轩 - Stata专版
国际比较项目(ICP) An international comparison of levels of real output
1 个回复 - 661 次查看 TJ_02_1984_002.国际比较项目(ICP).H. van ooststroom and a.maddison.An international comparison of levels of real output and productivity in agriculture in 1975.Institute of economic research,groninge ...2018-5-11 16:21 - ofse - 经济统计专版
劳动力统计. Measuring Atypical Jobs: Levels and Changes 2004
0 个回复 - 431 次查看 TJ_06_2004_002. 劳动力统计. OECD. Measuring Atypical Jobs: Levels and Changes. OECD2018-4-15 11:25 - kige - 经济统计专版
生产率分析. A comparison of canadian and u.s. productivity levels
0 个回复 - 436 次查看 TJ_12_2003_005. 生产率分析. Baldwin, j.r., j.-p. maynard, m. tanguay, f. wong, and b. yan. A comparison of canadian and u.s. productivity levels:an exploration of measurement issues. Ottawa:statis ...2018-4-11 17:21 - errorzhu - 经济统计专版
A rationale for assessing sports activity levels and limitations in knee disorde
2 个回复 - 778 次查看 【作者(必填)】Noyes FR, Barber SD, Mooar LA 【文题(必填)】A rationale for assessing sports activity levels and limitations in knee disorders 【年份(必填)】1989 Sep;(246):238-49. 【全文链接或 ...2018-1-21 21:57 - nalan22 - 求助成功区
AOM:Integrating diversity at different levels: multi-level human capital
1 个回复 - 711 次查看 【作者(必填)】 Sabina Nielsen and Amy Hillman⇑【文题(必填)】 Integrating diversity at different levels: multi-level human capital, social capital, and demographic diversity and their implicati ...2018-1-20 12:29 - yinhezhiwang - 求助成功区
Perceptions of safety climate at different employment levels
1 个回复 - 427 次查看 【作者(必填)】Cheyne, A, Tomas, J M and Cox, S, et al., 【文题(必填)】Perceptions of safety climate at different employment levels 【年份(必填)】2003 【全文链接或数据库名称(选填)】http://www.tand ...2018-1-14 16:44 - husteconyy - 求助成功区
Processing different levels of syntactic hierarchy: an ERP study on Chinese
0 个回复 - 495 次查看 摘要:The event-related potential (ERP) technique was used to investigate the neural dynamics in processing different levels of the hierarchical syntactic struct...原文链接:http://www.ncbi.nlm.nih.gov ...2018-1-8 19:59 - 论文库 - 人工智能论文版
contour(x,y,z,nlevels=5,main="等高线图")中“nlevels”作何用?--R语言
2 个回复 - 3717 次查看 contour(x,y,z,nlevels=5,main="等高线图")中“nlevels”作何用?--R语言2018-1-6 15:43 - lg21c - R语言论坛
Business Leadership: Three Levels of Ethical Analysis
1 个回复 - 649 次查看 【作者(必填)】Daniel E. Palmer[/backcolor] 【文题(必填)】Business Leadership: Three Levels of Ethical Analysis 【年份(必填)】Journal of Business Ethics,September 2009, Volume 88, Issue 3, pp 525– ...2017-12-24 14:57 - deer11 - 求助成功区
An empirical study on educational investment for all levels of higher education
3 个回复 - 514 次查看 【作者(必填)】Juan Yang, Shi Li 【文题(必填)】An empirical study on educational investment for all levels of higher education 【年份(必填)】2009 【全文链接或数据库名称(选填)】2017-11-9 13:46 - 奇犽dsp - 求助成功区
Journey Levels in Strategy-Based Transit Assignment
1 个回复 - 415 次查看 【作者(必填)】 Isabelle Constantin 【文题(必填)】 Journey Levels in Strategy-Based Transit Assignment 【年份(必填)】 2016 【全文链接或数据库名称(选填)】http://trrjournalonline.trb.org/doi/pdf/10 ...2017-10-28 07:22 - peterxu1969 - 求助成功区
Setting Inventory Levels in a Bike Sharing Network
2 个回复 - 728 次查看 【作者(必填)】 Sharon Datner 【文题(必填)】 Setting Inventory Levels in a Bike Sharing Network【年份(必填)】 2017 【全文链接或数据库名称(选填)】http://pubsonline.informs.org/doi/pdf/10.1287/trsc. ...2017-10-10 20:03 - peterxu1969 - 求助成功区
Modelling safety climate in the prediction of levels of safety activity
1 个回复 - 747 次查看 【作者(必填)】Cheyne, A.; Cox, S.; Oliver, A. (...) 【文题(必填)】Modelling safety climate in the prediction of levels of safety activity 【年份(必填)】1998 【全文链接或数据库名称(选填)】http:/ ...2017-9-17 17:29 - husteconyy - 求助成功区
【金融市场】Chinese underground lenders report falling bad debt levels
7 个回复 - 1237 次查看 FT Confidential Research source from https://www.ft.com/content/515cb168-8e39-11e7-a352-e46f43c5825d Chinese underground lenders report falling bad debt levels FTCR China Underground Lending ...2017-9-5 09:55 - william9225 - 真实世界经济学(含财经时事)
新手求教,赋值的levels问题!
1 个回复 - 824 次查看 原数据集data3的水平有48个,我将其中7个水平赋值给了data3_count,发现进行levels(data3_count)之后仍然是48个,导致最后做盒须图时,横坐标刻度过多,请问如何解决 部分脚本如下: 。。。。。 data3_count10,]# ...2017-7-17 21:45 - janer1986 - R语言论坛
Toward a Better Way to Measure Customer Satisfaction Levels in Public Housing: A
2 个回复 - 824 次查看 【作者(必填)】David P. Varady; Mark A. Carrozza; 【文题(必填)】Toward a Better Way to Measure Customer Satisfaction Levels in Public Housing: A Report from Cincinnati 【年份(必填)】2000 【全文 ...2017-5-24 16:25 - bofeng - 求助成功区
Why Entrepreneurs Often Experience Low, Not High, Levels of Stress The Joint Ef
5 个回复 - 1060 次查看 【作者(必填)】Robert A. Baron,Rebecca J. Franklin 【文题(必填)】Why Entrepreneurs Often Experience Low, Not High, Levels of Stress The Joint Effects of Selection and Psychological Capital 【年份 ...2017-4-19 22:53 - 七七qiqi2016 - 求助成功区
angus maddison A Comparison of Levels of GDP Per Capita in Developed
2 个回复 - 940 次查看 A Comparison of Levels of GDP Per Capita in Developed and Developing Countries,2017-4-16 09:53 - bluesubdark - 宏观经济学
求助英文文献:Why do fertility levels vary between urban and rural areas
3 个回复 - 754 次查看 【作者(必填)】Hill Kulu 【文题(必填)】Why do fertility levels vary between urban and rural areas? 【年份(必填)】 Regional Studies , [/backcolor]2013[/backcolor], [/backcolor]47[/backcolor](6)[/ ...2017-4-16 15:29 - Dreamer_Bill - 求助成功区
请问用怎么用R软件做极大重叠离散小波变换?是用dwt函数吗,那n.levels该如何取值呢
0 个回复 - 1553 次查看 请问用怎么用R软件做极大重叠离散小波变换?是用dwt函数吗,那n.levels该如何取值呢2017-3-14 09:43 - 撒哈拉lu - R语言论坛
The effect of informal employment and corruption on income levels in Brazil
1 个回复 - 1352 次查看 The effect of informal employment and corruption on income levels in Brazil This paper exploits a unique dataset on corruption and informal sector employment in 476 Brazilian municipalities to estimat ...2017-1-20 23:16 - xuehe - Gauss专版
The Five Capability Levels of Deep Learning Intelligence
2 个回复 - 1198 次查看 Arend Hintze has a good short article on “Understanding the four types of AI, from reactive robots to self-aware beings” where he outlines the following types of AI:Reactive Machine - The most basic ...2016-12-27 13:18 - oliyiyi - LATEX论坛
Confidence intervals for return levels for the peaks-over-threshold approach
1 个回复 - 686 次查看 【作者(必填)】 Thomas Schendel Rossukon Thongwichian 【文题(必填)】Confidence intervals for return levels for the peaks-over-threshold approach 【年份(必填)】 2017 【全文链接或数据库名称(选填) ...2017-1-10 17:49 - moretc - 求助成功区
文献——A Unified Theory of the evolution of international income levels
0 个回复 - 379 次查看 一篇分析国际收入差距的经典理论文献。2016-12-29 14:30 - sco-1990 - 灌水吧
factor变量如何改变levels?比如说,5个level,合并成3个
10 个回复 - 22531 次查看 如题。测试代码和数据如下: 我现在想把AB合并为"Low", CD合并为“Mid”, E变为“Hig”,不从最早的att变量入手,而是直接根据因子变量att.fc来,不知道应该如何操作?2013-6-17 20:15 - danbaidong - R语言论坛
English Course • Subject Link (9 Levels)【缺 Level 1,有资源会补上】
12 个回复 - 2876 次查看 English Course • Subject Link Subject Link is a nine-level curriculum integration reading program for high-beginner to high-intermediate students. The series’ theme-based curriculum helps st ...2016-10-13 02:27 - cmwei333 - 外语学习
China's Urbanization Levels: Reconstructing Comparable Time-Series Data
3 个回复 - 824 次查看 【作者(必填)】Yixing Zhou and Laurence J. C. Ma 【文题(必填)】China's Urbanization Levels: Reconstructing Comparable Time-Series Data Based on the Fifth Population Census 【年份(必填)】China Qua ...2016-10-12 13:16 - wbwang280 - 求助成功区
【独家发布】Machine Learning Engineer (all levels):500px - Toronto, ON
1 个回复 - 881 次查看 http://ca.indeed.com/viewjob?jk=79647e8a07596b56&q=Machine+Learning&l=Toronto%2C+ON&tk=1aqsuftc7aeuiace&from=web2016-8-24 08:20 - hanszhu - winbugs及其他软件专版
The First 90 Days: Critical Success Strategies for New Leaders at All Levels
3 个回复 - 2196 次查看 【资料名称】:The First 90 Days: Critical Success Strategies for New Leaders at All Levels 【资料作者】:Michael Watkins 【资料来源】:Harvard Business Press; 1 edition 【压缩卷】:无 【文章大小】 ...2010-3-14 12:44 - tombell - 商学院
180RMB 收购一套2016年FRM的levels notes
10 个回复 - 1879 次查看 如题~ 希望各位考过的大神们可以割爱! 顺丰到付! 支付宝或者微信交易都可以~ 谢谢!! 祝大家节日快乐!2016-6-1 19:50 - a26186212 - CFA、CVA、FRM等金融考证论坛
求助Circulating sclerostin and dickkopf-1 levels
1 个回复 - 522 次查看 【作者(必填)】 Kashii M 【文题(必填)】 Circulating sclerostin and dickkopf-1 levels in ossification of the posterior longitudinal ligament of the spine. 【年份(必填)】 J Bone Miner Metab. 2016 Ma ...2016-5-4 14:57 - 刀剑林 - 求助成功区
Contributions of Managerial Levels: Comparing MLB and NFL
6 个回复 - 694 次查看 【作者(必填)】Goff Brian 【文题(必填)】Contributions of Managerial Levels: Comparing MLB and NFL 【年份(必填)】2013 【全文链接或数据库名称(选填)】http://onlinelibrary.wiley.com/doi/10.1002/md ...2016-4-25 10:08 - dliangfranklin - 求助成功区
Construction of Sudoku-based uniform designs with mixed levels
1 个回复 - 623 次查看 【作者(必填)】Construction of Sudoku-based uniform designs with mixed levels 【文题(必填)】 [*]Hongyi Lia, b, [*]Kashinath Chatterjeec, [*]Bo Lia, [*]Hong Qina 【年份(必填)】2016 【全 ...2016-4-17 23:00 - ozj9325 - 求助成功区
Construction of Sudoku-based uniform designs with mixed levels
3 个回复 - 744 次查看 【作者(必填)】Hongyi Lia, b, Kashinath Chatterjeec, Bo Lia, Hong Qin 【文题(必填)】Construction of Sudoku-based uniform designs with mixed levels 【年份(必填)】2016 【全文链接或数据库名称(选填 ...2016-3-31 22:07 - ozj9325 - 求助成功区
向量下面带levels是为什么
2 个回复 - 3449 次查看 我在读取的分完词的文本里,为什么每次打印 下面都会显示levels ,这个对之后的字符串操作有影响吗?怎么去除? > data[[1]][,1] [1] 的 库 里 了 在 三分球 已经 比赛 ...2016-3-31 17:04 - wind_951 - R语言论坛
Citizen information levels and grassroots opposition to new hazardous waste site
1 个回复 - 558 次查看 【作者(必填)】Stuart A. Wright 【文题(必填)】 Citizen information levels and grassroots opposition to new hazardous waste sites: are nimbyists informed?【年份(必填)】Volume 13, Issue 3, 1993 【 ...2016-3-21 19:30 - r9205009 - 求助成功区
Toward Higher Levels of Analysis
0 个回复 - 570 次查看 Toward Higher Levels of Analysis2016-1-24 18:19 - jiayan9939 - 经管书评
请问这两flexible-price levels of output和Walrasian levels of output的区别?
1 个回复 - 919 次查看 希望能讲的详细点!2013-9-14 16:55 - ffyyll13 - 爱问频道
[Research Paper]Changing Noise Levels and Housing Prices near the Atlanta Airpor
1 个回复 - 689 次查看 Changing Noise Levels and Housing Prices near the Atlanta Airport**** 本内容被作者隐藏 ****2015-3-20 05:57 - Nicolle - winbugs及其他软件专版
A list of the world cities with highest pollution levels:
1 个回复 - 1252 次查看 Rank, city, country, pollution level[/backcolor] 1 Delhi, India 153[/backcolor] 2 Patna, India 149[/backcolor] 3 Gwalior, India 144[/backcolor] 4 Raipur, India 134[/backcolor] 5 Karachi, Pakistan ...2015-12-9 13:34 - 自由的阿蔚 - 新手入门区
随机森林出现error: New factor levels not present in the training data
4 个回复 - 4756 次查看 我要用随机森林回归,预测负荷。程序如下, ntdata12015-10-24 13:09 - luckystt - R语言论坛
[Urgent help] Infant and child mortality levels and trends in Bangladesh
1 个回复 - 589 次查看 Title: Infant and child mortality levels and trends in Bangladesh Author: M. Kabir, Rafiquel Islam Chowdhury and Ruhul Amin Journal of Biosocial Science Journal of Biosocial Science / Volume ...2015-10-27 15:13 - suzzon - 求助成功区
The CLASS variable has more than two levels?
5 个回复 - 6840 次查看 我在做SAS 的时候 proc ttest data= data06.ttest; class dnum; var se_vest2 ae_vest2; run; 这一步说我—— The CLASS variable has more than two levels 请问是什么意思啊?2009-6-23 02:01 - clearbetty - SAS专版
求助Serum fetuin-A levels inversely correlate
1 个回复 - 723 次查看 【作者(必填)】 Szeberin Z1, Fehérvári M 【文题(必填)】 Serum fetuin-A levels inversely correlate with the severity of arterial calcification in patients with chronic lower extremity atheroscleros ...2015-4-2 10:14 - 刀剑林 - 文献求助专区
Determining minimum staffing levels during snowstorms using an integrated simula
1 个回复 - 1383 次查看 【作者(必填)】 Amber Kunkel, Laura A. McLay 【文题(必填)】 Determining minimum staffing levels during snowstorms using an integrated simulation, regression, and reliability model【年份(必填)】 201 ...2015-8-12 15:30 - timesever - 求助成功区
levelsof 显示小数点后位数过长
17 个回复 - 4146 次查看 . levelsof pt1 10.60000038146973 11.60000038146973 11.80000019073486 12.19999980926514 14.39999961853027 14.69999980926514 15.19999980926514 希望得到的结果是 10.6 11.6 11.8 12.2 14.4 14.7 1 ...2013-6-21 14:14 - dxystata - Stata专版