tag 标签: Expression经管大学堂：名校名师名课

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《数学经济学学报》Journal of Mathematical Economics Vol 35-Vol 49 经济金融数学专区 holigeniuson 2013-4-2 266 83813 yanghan77777 2022-5-20 02:10:10
随机模型的边界耗散 外文文献专区 大多数88 2022-3-8 0 316 大多数88 2022-3-8 15:07:20
悬赏 Acute stress facilitates long-lasting changes in cholinergic gene expression - [!reward_solved!] attachment 求助成功区 4067560 2013-4-17 1 873 bxmzone 2013-4-17 14:59:18
matlab程序 出现如下错误 请解答 MATLAB等数学软件专版 suangxue 2013-4-17 0 11278 suangxue 2013-4-17 08:59:38
悬赏 求助文献Association of lipoprotein lipase polymorphism rs2197089 with - [!reward_solved!] attachment 求助成功区 刀剑林 2013-3-22 1 919 Toyotomi 2013-3-22 19:08:53
悬赏 Data mining with a parallel rule induction system based on - [!reward_solved!] attachment 求助成功区 kuhasu 2011-9-29 10 1876 kuhasu 2011-10-10 14:44:46
悬赏 Study of human dopamine sulfotransferases based on gene expression programming - [!reward_solved!] attachment 求助成功区 kuhasu 2011-9-30 2 1172 hahaqhd 2011-10-1 05:21:20
悬赏 The use of genetic programming in the analysis of quantitative gene expression p - [!reward_solved!] attachment 求助成功区 kuhasu 2011-9-30 2 781 kuhasu 2011-9-30 18:49:42
悬赏 Prediction of atmospheric degradation data for POPs by gene expression programmi - [!reward_solved!] attachment 求助成功区 匿名 2011-9-30 1 1129 xjqxxjjqq 2011-9-30 10:56:45
悬赏 Gene expression programming for total bed material load estimation--a case study - [!reward_solved!] attachment 求助成功区 kuhasu 2011-9-29 1 1013 兵哥哥 2011-9-30 10:04:56
悬赏 A niching gene expression programming algorithm based on parallel model - [!reward_solved!] attachment 求助成功区 kuhasu 2011-9-29 1 812 兵哥哥 2011-9-30 10:01:01
悬赏 Evolving scheduling rules with gene expression programming for dynamic single-ma - [!reward_solved!] attachment 求助成功区 kuhasu 2011-9-30 2 827 gamex 2011-9-30 03:21:47
悬赏 Short-term load forecasting of power systems by gene expression programming - [!reward_solved!] attachment 求助成功区 kuhasu 2011-9-30 1 1561 gamex 2011-9-30 02:59:19
悬赏 Intrauterine programming of fetal islet in rats—effects of maternal protein res - [!reward_solved!] attachment 求助成功区 kuhasu 2011-9-30 3 948 kuhasu 2011-9-30 01:16:31
悬赏 About the convergence rates of a class of gene expression programming - [!reward_solved!] attachment 求助成功区 kuhasu 2011-9-30 2 888 kuhasu 2011-9-30 01:15:47
悬赏 Improving Gene Expression Programming Using Parallel Taboo Search - [!reward_solved!] attachment 求助成功区 kuhasu 2011-7-24 1 1167 xiaobo137 2011-7-24 14:38:00
悬赏 Distance Guided Classification with Gene Expression Programming - [!reward_solved!] attachment 求助成功区 kuhasu 2011-7-24 1 890 qwang64 2011-7-24 03:06:39
请问如果用R中expression 函数怎么实现表达式 x1+x2+...+xn ，求高手解答 attach_img R语言论坛 songtao07 2011-6-3 7 11607 yucongy 2011-6-6 20:35:41
怎样用expression作为function的arguement? R语言论坛 casperyc 2010-12-19 3 1972 casperyc 2011-3-14 22:10:20
e-book attachment 计量经济学与统计软件 xull 2010-1-13 0 1538 xull 2010-1-13 17:41:30
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yukai08008 2013-2-18 20:47
General form, INDEX function: INDEX( source,excerpt ) where source specifies the character variable or expression to search excerpt specifies a character string that is enclosed in quotation marks (' '). 可以用来挑选包含字符串的数据集子集 data hrd.datapool; set hrd.temp; if index(job,'word processing') 0; run;
个人分类: 学习笔记|0 个评论
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