Analysis: Second Edition-经管之家(原经济论坛)-经济、管理、金融、统计在线教育和咨询网站

结果：找到“Analysis: Second Edition”相关内容101个，排序为按回复时间降序，搜索更多相关帖子请点击“高级”

Bayesian Methods for Data Analysis 3rd Edition by B. P. Carlin and T. A. Louis
7 个回复 - 1156 次查看 Bayesian Methods for Data Analysis 3rd Edition by B. P. Carlin and T. A. Louis：数据+习题答案 Bayesian Methods for Data Analysis 3rd Edition by B. P. Carlin and T. A. Louis：数据+习题答案 Ba ...2022-5-22 08:20 - Lala-20200 - 现金交易版

Doing Bayesian Data Analysis, Second Edition 学习贝叶斯和R的好书
268 个回复 - 23348 次查看如果你想学习贝叶斯计量经济学，这本是最好的入门读物，门槛较低，而且intuition讲得特别好。顺便的，你把R也学好了。[/backcolor] 论坛上有第一版，这是今年十一月十七日Amazon上市的最新第二版，比起第一版有很多 ...2014-12-4 02:54 - 怪了怪 - 休闲灌水

A Brief on Tensor Analysis Second Edition 张量分析简论第2版
8 个回复 - 2136 次查看 A Brief on Tensor Analysis Second Edition James G. Simmonds2021-1-21 16:05 - sss_trek - 经济金融数学专区

Analysis of Longitudinal Data(SECOND EDITION)PETER J. DIGGLE 高清pdf
10 个回复 - 4646 次查看书名：Analysis of Longitudinal Data 版次：SECOND EDITION 作者：PETER J. DIGGLE 质量：高清pdf 出版社：牛津大学出版社学习面板数据的好教材，2003年第一版出来以后受到热烈欢迎，但是网上一直都没有相 ...2017-3-26 11:26 - 20115326 - 计量经济学与统计软件

A_Second_Course_in_Statistics,Regression Analysis, 7th edition, William Mandenha
4 个回复 - 1572 次查看 2017-2-13 00:25 - yurisike - 商学院

Risk Analysis in Finance and Insurance, Second Edition
32 个回复 - 5085 次查看 Risk Analysis in Finance and Insurance, Second Edition presents an accessible yet comprehensive introduction to the main concepts and methods that transform risk management into a quantitative science ...2014-7-2 21:05 - 大家开心 - 金融学（理论版）

【独家发布】A Second Course in Statistics: Regression Analysis (7th Edition)
243 个回复 - 23831 次查看 Book Description Author: William Mendenhall, Terry Sincich[/backcolor] Publication Date: January 15, 2011 | ISBN-10: 0321691695 | ISBN-13: 978-0321691699 | Edition: 7 [/backcolor] A Second Course ...2013-3-11 10:52 - ping_gu_org - 计量经济学与统计软件

发布A Second Course in Statistics: Regression Analysis 7th edition 英文原版PDF
335 个回复 - 34635 次查看英文原版pdf，非扫描版，绝对清晰。另副原书自带光盘数据。2013-3-18 00:54 - frdlt - 计量经济学与统计软件

Textbook: Applied Regression Analysis: A Research Tool, Second Edition
1 个回复 - 803 次查看 Textbook: Applied Regression Analysis: A research tool, second edition by John O. Rawlings, Sastry G. Pantula, David A. Dickey ...2018-9-17 09:44 - teminator - 计量经济学与统计软件

AN INTRODUCTION TO EFFICIENCY AND PRODUCTIVITY ANALYSIS Second Edition
8 个回复 - 2066 次查看 AN INTRODUCTION TO EFFICIENCY AND PRODUCTIVITY ANALYSIS Second Edition by Timothy J. Coelli D.S. Prasada Rao Christopher J. O'Donnell George E. Battese2014-10-24 16:02 - li_mao - 经济金融数学专区

求图书Foundations of Factor Analysis, Second Edition
5 个回复 - 1006 次查看求购图书： Foundations of Factor Analysis, Second Edition 作者： Stanley A Mulaik2016-2-24 11:24 - Dardenlin07 - 经管书评

Analysis of Ordinal Categorical Data, Second Edition
9 个回复 - 2057 次查看 2016-3-3 00:45 - zhiyongchen1024 - 经管书评

【2015】A Course in Abstract Harmonic Analysis, Second Edition
31 个回复 - 4125 次查看如果您喜欢我的帖，就请加“+关注”哦马上抢沙发希望您喜欢我的免费发布支持我加我关注我 http://bbs.pinggu.org/z_guanzhu.php?action=add&fuid=3727866 【2015】A Course in Abstract Harmonic ...2015-11-30 14:17 - kychan - 管理科学

Convex Analysis and Nonlinear Optimization Theory and Examples Second Edition
2 个回复 - 2495 次查看 Jonathan M. Borwein Adrian S.Lewis Convex Analysis and Nonlinear Optimization Theory and Examples Second Edition2014-10-24 16:22 - li_mao - 经济金融数学专区

A Course in Functional Analysis Second Edition
6 个回复 - 2619 次查看 CHAPTER I Hilbert Spaces §1. Elementary Properties and Exampies §2. Orthogonality §3. The Riesz Representation Theorem §4. Orthonormal Sets of Vectors and Bases §5. Isomorphic Hilbert S ...2015-10-9 09:47 - dinghui0222 - 计量经济学与统计软件

Modern Real Analysis, Second Edition By William P. Ziemer
7 个回复 - 2954 次查看 This first year graduate text is a comprehensive resource in real analysis based on a modern treatment of measure and integration. Presented in a definitive and self-contained manner, it features a na ...2017-12-2 10:55 - nivastuli - 博弈论

Statistical Analysis of Reliability and Life-Testing Models, Second Edition
2 个回复 - 1579 次查看求书！！！2014-8-13 10:28 - akun200 - 计量经济学与统计软件

【独家发布】Python Data Analysis - Second Edition
35 个回复 - 2110 次查看 **** 本内容被作者隐藏 ****2021-4-19 02:26 - Nicolle - winbugs及其他软件专版

关于学习贝叶斯和R语言的书Doing Bayesian Data Analysis, Second Edition
14 个回复 - 4100 次查看虽然经常上经管之家但是发帖倒是第一次。看到Doing Bayesian Data Analysis, Second Edition貌似可以帮助学习R语言，我也是个统计学在读master，虽然也是半路出家，但是也没有放弃治疗。本来是想免费的后 ...2016-12-7 00:15 - xcelephant - R语言论坛

Survival Analysis Using SAS_ A Practical Guide_Second_Edition
11 个回复 - 4195 次查看 Paul D. Allison Survival Analysis Using SAS ® A Practical Guide Second Edition2014-10-13 22:49 - li_mao - 计量经济学与统计软件

Survival Analysis Using SAS-- A Practical Guide, Second Edition
0 个回复 - 826 次查看新买SAS书籍分享 Survival Analysis Using SAS-- A Practical Guide, Second Edition2020-11-10 10:41 - xiaobo_mx - SAS专版

Time Series Analysis with Applications in R, Second Edition (Cryer 2008)
8 个回复 - 2071 次查看这学期学习了Time Series Analysis with Applications in R, Second Edition (Cryer 2008)，感觉书中内容非常适合初学者，是英文版的，拿来和大家分享一下。2018-8-15 17:13 - yinfangsheng126 - R语言论坛

Solutions Manual for: Understanding Analysis, Second Edition
12 个回复 - 5961 次查看 2017-2-26 16:03 - incery - 经济金融数学专区

Wiley ebook-Fourier Analysis of Time Series (Second Edition)
16 个回复 - 6465 次查看 (传来上传的文件中的Chapter 6是损害的，多谢lanzai网友提醒，现已重新上传正确文件) 迎新年，送新礼~~ Introduction: A new, revised edition of a yet unrivaled work on frequency domain analys ...2007-2-7 17:02 - ccpoo - 计量经济学与统计软件

求电子版数学教材 Elementary Classical Analysis, second edition
5 个回复 - 1419 次查看求书：J. E. Marsden and M. J. Hoffman, Elementary Classical Analysis, second edition.2020-8-6 12:51 - jiutouqing - 经管考研

Survival Analysis Using SAS: A Practical Guide(Second Edition)By Paul D Allison
58 个回复 - 27054 次查看 Survival Analysis Using SAS: A Practical Guide, Second Edition By Paul D Allison [*]Publisher: SAS Publishing[*]Number Of Pages: 336[*]Publication Date: 2010-04-23[*]ISBN-10 / ASIN: 15 ...2010-7-27 11:23 - eijuhz - 商业数据分析

Statistical Analysis with Missing Data, Second edition.
7 个回复 - 953 次查看【作者(必填)】Little RJA, Rubin DB:[/backcolor] 【文题(必填)】Statistical Analysis with Missing Data, Second edition. 【年份(必填)】 New York: John Wiley and Sons 2002.[/backcolor] 【全文链接或 ...2020-4-11 11:15 - andy162639 - 求助成功区

Propensity Score Analysis: Statistical Methods and Application-second edition
21 个回复 - 8914 次查看 2015-5-31 22:53 - helle1985 - 经济统计专版

[下载]The Statistical Analysis of Failure Time Data (Second Edition).pdf
14 个回复 - 11356 次查看 460多页pdf文档，11M左右大小。2007-3-17 10:32 - yishirl - 计量经济学与统计软件

求Analysis of Multivariate Social Science Data, Second Edition
2 个回复 - 954 次查看 Analysis of Multivariate Social Science Data, Second Edition (Chapman & Hall/CRC Statistics in the Social and Behavioral Sciences) David J. Bartholomew (Author), Fiona Steele (Author), Irini Moustak ...2014-1-27 11:14 - 鲛人泣月 - 求助成功区

Applied Longitudinal Analysis Second Edition 第二版扫描版
3 个回复 - 2505 次查看 Applied Longitudinal Analysis (Second Edition), by Fitzmaurice, Laird, and Ware 第二版扫描版2017-11-19 16:31 - tjr - 计量经济学与统计软件

Doing Bayesian Data Analysis, Second Edition-A Tutorial with R, JAGS, Stan
3 个回复 - 2383 次查看第二版2017-5-4 12:28 - sophiaxie - 计量经济学与统计软件

求Analysis of Clinical Trials Using SAS: A Practical Guide, Second Edition – PD
1 个回复 - 1149 次查看哪位大仙有pdf版的Analysis of Clinical Trials Using SAS: A Practical Guide, Second Edition – PDF Version 2nd2019-4-24 20:52 - yahoo0806 - 计量经济学与统计软件

statistical analysis with missing data second edition
13 个回复 - 7880 次查看经典书籍下载《Statistical Analysis with Missing Data, Second Edition》论坛中已经有了这本书，但分成了好几个文件，下载麻烦且费流量，就上传一个完整版的 Authors:Roderick J. A. Little, Donald B. Ru ...2013-4-19 11:09 - hankaishan_54 - R语言论坛

Python for Data Analysis Second Edition
6 个回复 - 2063 次查看 2018-11-6 19:56 - kukenghuqian - python论坛

ggplot2: Elegant Graphics for Data Analysis, Second Edition
106 个回复 - 12799 次查看 ggplot2: Elegant Graphics for Data Analysis, Second Edition Springer | Computational Statistics | July 10, 2016 | ISBN-10: 331924275X | 260 pages | pdf | 9.05 mb This new edition to the clas ...2016-6-14 16:07 - igs816 - 量化投资

学习贝叶斯和R的好书：Doing Bayesian Data Analysis, Second Edition 全网首发
388 个回复 - 54051 次查看如果你想学习贝叶斯计量经济学，这本是最好的入门读物，门槛较低，而且intuition讲得特别好。顺便的，你把R也学好了。论坛上有第一版，这是今年十一月十七日Amazon上市的最新第二版，比起第一版有很多重大的改进， ...2014-12-4 02:47 - 怪了怪 - R语言论坛

Spatial Data Analysis in Ecology and Agriculture Using R second edition
2 个回复 - 1040 次查看各位老师，谁有Spatial Data Analysis in Ecology and Agriculture Using R second edition，谢谢分享[/backcolor]2019-2-1 20:45 - dongshengjay - R语言论坛

Learning Geospatial Analysis with Python (Second Edition) - Joel Lawhead
8 个回复 - 2756 次查看 Learning Geospatial Analysis with Python (Second Edition) - Joel Lawhead2016-1-13 21:14 - kexinkeqing - 区域经济学

【独家发布】【2010】Applied Functional Analysis, Second Edition
38 个回复 - 2597 次查看【2010】Applied Functional Analysis, Second Edition Book 图书名称：Applied Functional Analysis, Second Edition Author 作者： J. Tinsley Oden ,Leszek Demkowicz Publisher 出版社：Chapman and Hall/C ...2015-6-17 07:27 - kychan - 经管书评

Hierarchical Modeling and Analysis for Spatial Data（Second Edition）
6 个回复 - 1388 次查看 Hierarchical Modeling and Anal ysis for Spatial Data（Second Edition）空间计量经济学的力作，用R语言实现分析过程。2018-7-15 12:08 - 秋之飘枫 - 经济统计专版

Analysis: Second Edition
6 个回复 - 944 次查看【作者(必填)】Elliott H. Lieb: Princeton University, Princeton, NJ, Michael Loss: Georgia Institute of Technology, Atlanta, GA 【文题(必填)】Analysis: Second Edition 【年份(必填)】2001 【全文链 ...2018-10-10 21:41 - nivastuli - 求助成功区

Applied time series analysis with R- Second Edition - Wayne Woodward
4 个回复 - 1644 次查看 Applied Time Series Analysis with R 2nd Edition [*]ISBN-10: 1498734227 [*]ISBN-13: 978-1498734226 Virtually any random process developing chronologically can be viewed as a time series. I ...2018-9-27 23:16 - chicu - R语言论坛

投入产出分析 Input-output analysis: foundations and extensions(second edition)
5 个回复 - 1900 次查看 TJ_12_2008_007 投入产出分析 Miller,r.e.and blair,p.d. Input-output analysis: foundations and extensions.(second edition) Cambridge:cambridge university press2018-4-11 00:38 - 虎皮11 - 经济统计专版

Python Data Analysis - Second Edition by Armando Fandango (PDF)
34 个回复 - 5725 次查看 English | 2017 | ISBN: 1787127486 | 320 Pages | PDF Data analysis techniques generate useful insights from small and large volumes of data. Python, with its strong set of libraries, has become a po ...2018-8-14 22:56 - igs816 - python论坛

Analysis of Clinical Trials Using SAS®: A Practical Guide, Second Edition
10 个回复 - 3265 次查看 This is the Latest version included more topics, like SEQUENTIAL Design and SEQUENTIAL Test. Please help me to find it, appreciated for your kindness. 【作者(必填)】 Alex Dmitrienko, Gary G. ...2017-8-28 14:26 - suzhzh - 求助成功区

Spatial Analysis A Guide For Ecologists- second edition
6 个回复 - 2218 次查看空间分析：生态学家指南,第二专辑，该书是了解空间分析的基础读本之一，需要的坛友下载！2016-5-23 06:41 - 陈信研究员 - 金融学（理论版）

Meta-Analysis in Stata Second Edition
0 个回复 - 800 次查看【作者(必填)】 Tom M. Palmer and Jonathan A. C. Sterne (editors) 【文题(必填)】 Meta-Analysis in Stata: An Updated Collection from the Stata Journal, Second Edition【年份(必填)】 2016 【全文链接或 ...2018-2-10 13:53 - shanxianmin2011 - 文献求助专区

求 Understanding Analysis The Second Edition Solutions 1000 论坛币
12 个回复 - 4851 次查看求 Understanding Analysis The Second Edition Solutions 1000 论坛币 http://www.springer.com/us/book/97814939271112017-1-6 20:16 - jerry780 - 悬赏大厅

Time Series Analysis and Its Applications With R Examples Second Edition
0 个回复 - 1463 次查看 Robert H. Shumway David S. Stoffer Time Series Analysis and Its Applications With R Examples Second Edition 求第二版答案，可有偿2017-12-20 10:54 - 18390235226 - 金融学（理论版）

求A Second Course in Statistics: Regression Analysis, Seventh Edition，国际版
0 个回复 - 824 次查看是国际版，不是普通的那个，求书+答案！谢谢！！2017-11-6 22:33 - Ashley233 - 爱问频道

Bayesian data analysis second edition
4 个回复 - 2295 次查看 Bayesian data analysis second edition2014-10-14 18:21 - li_mao - 计量经济学与统计软件

Applied Spatial Data Analysis with R Second Edition
2 个回复 - 1459 次查看 Roger S. Bivand • Edzer Pebesma Virgilio Gómez-Rubio Applied Spatial Data Analysis with R Second Edition2014-10-14 22:15 - li_mao - 计量经济学与统计软件

Clojure Data Analysis Cookbook - Second Edition
0 个回复 - 814 次查看 https://www.packtpub.com/application-development/clojure-data-analysis-cookbook-second-edition Clojure Data Analysis Cookbook - Second Edition Dive into data analysis with Clojure through over 1 ...2015-4-5 23:32 - Nicolle - winbugs及其他软件专版

Statistical Design and Analysis of Experiments (Second Edition)
10 个回复 - 4088 次查看 [此贴子已经被作者于2006-2-20 11:36:32编辑过]2006-2-17 14:24 - youguzhi - 计量经济学与统计软件

R in Action, Second Edition Data analysis and graphics with R
9 个回复 - 1886 次查看 the .rar document contains the book, code, Bonus chapter 23, and Errata R in Action Data analysis and graphics with R Second Edition by Robert I. Kabacoff R in Action, Second Edition presents ...2016-5-8 00:28 - SleepyTom - 金融工程（数量金融）与金融衍生品

R in Action: Data Analysis and Graphics with R, Second Edition
77 个回复 - 8369 次查看 epub / mobi / pdf 35.3MB Paperback: 608 pages Publisher: Manning Publications; 2nd edition (June 6, 2015) Language: English ISBN-10: 1617291382 ISBN-13: 978-1617291388 ...2015-9-27 16:04 - igs816 - 量化投资

经典书籍：Cooper Seiford Tone-Data Envelopment Analysis（Second Edition）
15 个回复 - 6221 次查看最经典的数据包络分析（DEA）书籍：名称：Data Envelopment Analysis-A Comprehensive Text with Models, Applications, References and DEA-Solver Software(Second Edition) WILLIAM W. COOPER ...2009-8-4 18:45 - vivagcy - 计量经济学与统计软件

Statistical Analysis of Financial Data in R Second Edition
4 个回复 - 1810 次查看 Rene Carmona′ Statistical Analysis of Financial Data in R Second Edition2014-10-15 09:25 - li_mao - 计量经济学与统计软件

Linear regression analysis Second Edition 中文版
0 个回复 - 810 次查看 Linear regression analysis Wiley Second EditionGEORGE A. F. SEBER ALANJ.LEE Department of Statistics University of Auckland Auckland, New Zealand2017-2-16 09:11 - gufenglou - 悬赏大厅

求 Ralston 的经典名著 A First Course in Numerical Analysis: Second Edition
2 个回复 - 1647 次查看 A First Course in Numerical Analysis: Second Edition (Dover Books on Mathematics) Anthony Ralston (Author), Philip Rabinowitz (Author) 谢谢共享！2014-7-31 02:42 - prestige - 计量经济学与统计软件

Statistical Analysis of Financial Data in R（Second Edition）
8 个回复 - 1901 次查看 ISSN 1431-875X ISSN 2197-4136 (electronic) ISBN 978-1-4614-8787-6 ISBN 978-1-4614-8788-3 (eBook) DOI 10.1007/978-1-4614-8788-3 Springer New York Heidelberg Dordrecht London Library of Congress Con ...2015-7-5 09:51 - eshanzi - R语言论坛

An Introduction to Categorical Data Analysis, Second Edition.pdf
2 个回复 - 1118 次查看上课用书～～ Wiley 出版社希望对大家有用～～2016-12-21 01:20 - HF110 - 灌水吧

SAS and R: Data Management, Statistical Analysis, and Graphics, Second Edition
86 个回复 - 12561 次查看 An Up-to-Date, All-in-One Resource for Using SAS and R to Perform Frequent Tasks The first edition of this popular guide provided a path between SAS and R using an easy-to-understand, dictionary-like ...2014-8-13 08:05 - 大家开心 - R语言论坛

200币悬赏：CONFIRMATORY FACTOR ANALYSIS FOR APPLIED RESEARCH, SECOND EDITION
30 个回复 - 3510 次查看【作者(必填)】 Timothy A. Brown 【文题(必填)】 CONFIRMATORY FACTOR ANALYSIS FOR APPLIED RESEARCH, SECOND EDITION 【年份(必填)】 2015 【全文链接或数据库名称(选填)】2016-4-4 21:48 - 323191599 - 求助成功区

【下载】Bayes and Empirical Bayes Methods for Data Analysis, Second Edition~2nd
13 个回复 - 6500 次查看 Product Details[*]Hardcover: 440 pages[*]Publisher: Chapman & Hall; 2 edition (June 22, 2000)[*]Language: English[*]ISBN-10: 1584881704[*]ISBN-13: 978-1584881704 Content Preface to the Second Edit ...2010-6-2 07:49 - kxjs2007 - 计量经济学与统计软件

【统计学教科书】An Introduction to Categorical Data Analysis, Second Edition原版
1 个回复 - 1768 次查看 2016-2-1 04:42 - chloexue - 计量经济学与统计软件

Time Series Analysis with Applications in R, Second Edition Jonathan D. Cryer
12 个回复 - 6026 次查看 1232014-1-6 02:58 - Eviewschen - HLM专版

Modeling and analysis of stochastic systems (second edition) Kulkarni
0 个回复 - 1042 次查看 Modeling and analysis of stochastic systems (second edition) 作者 Kulkarni 该版本主要面向研究生。论坛上已经有一个本书的简化版，主要面向对象是本科生，链接如下： http://bbs.pinggu.org/thread-1 ...2016-1-6 13:56 - tang_2015 - 计量经济学与统计软件

Sampling: Design and Analysis - Second Edition
1 个回复 - 1283 次查看 Sampling: Design and Analysis - Second Edition Sharon L. Lohr Arizona State University 1 Introduction 2 Simple Probability Samples 3 Stratified Sampling 4 Ratio and Regression Estimation 5 Cl ...2015-12-30 19:40 - breeding - R语言论坛

求书一本Hierarchical Modeling and Analysis for Spatial Data, Second Edition
1 个回复 - 1163 次查看 Hierarchical Modeling and Analysis for Spatial Data, Second Edition2015-11-21 23:46 - baixd507 - 爱问频道

Clojure Data Analysis Cookbook - Second Edition
17 个回复 - 1820 次查看 2015-8-26 09:06 - Nicolle - winbugs及其他软件专版

Linear regression analysis Second Edition
5 个回复 - 2076 次查看 Linear regression analysis Wiley Second Edition GEORGE A. F. SEBER ALANJ.LEE Department of Statistics University of Auckland Auckland, New Zealand WILEY SERIES IN PROBABILITY AND STATISTICS ...2014-12-23 08:11 - cannoyey - 计量经济学与统计软件

[高清] Survival Analysis A Self-Learning Text Second Edition
0 个回复 - 1033 次查看 Found a good resource which should be share. Contents Preface vii Acknowledgments xi Chapter 1 Introduction to Survival Analysis 1 Introduction 2 Abbreviated Outline 2 Objectives 3 Present ...2015-7-28 05:20 - 念小年 - 计量经济学与统计软件

Fix Income Analysis, Second Edition
1 个回复 - 976 次查看 2015-3-21 23:49 - icesola - 计量经济学与统计软件

Survival Analysis: Techniques for Censored and Truncated Data, Second Edition
5 个回复 - 5038 次查看 [*]Series: Statistics for Biology and Health [*]Paperback: 538 pages [*]Publisher: Springer (October 4, 2003) [*]Language: English [*]ISBN-10: 1441929851 [*]ISBN-13: 978-1441929853 兼顾理论和 ...2014-11-24 08:41 - jiannb87 - 计量经济学与统计软件

The Analysis of Cross-Classifi ed Categorical Data Second Edition
0 个回复 - 1086 次查看 Stephen E. Fienberg The Analysis of Cross-Classifi ed Categorical Data Second Edition2014-10-14 23:15 - li_mao - 计量经济学与统计软件

Handbook on Data Envelopment Analysis Second Edition
0 个回复 - 844 次查看 William W. Cooper l Lawrence M. Seiford Joe Zhu Editors Handbook on Data Envelopment AnalysisSecond Edition2014-10-14 23:05 - li_mao - 计量经济学与统计软件

[下载]Time Series Analysis (second edition) Wiliam W.S Wei
15 个回复 - 6017 次查看一本时间序列分析的教材，引文版的~~~PREFACE TO THE SECOND EDITION Since the publication of the first edition, this book has been used by many researchers and universities worldwide. I am very gratef ...2010-12-7 10:04 - zhuhuichenecho - 经济金融数学专区

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