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武子丰, 乌兰图雅
地理科学研究Vol.6 No.3, 全文下载: PDF HTML XML DOI:10.12677/GSER.2017.63023, August 30 2017
多水平混合IRT模型及其发展与应用Multilevel Mixture IRT Model and Its Development and Applications
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基于岭回归和LASSO回归的济南市旅游收入影响因素分析Analysis of the Influencing Factors of Tourism Income in Jinan Based on Ridge Re-gression and LASSO Regression
申小桐, 牟唯嫣, 王 欣
应用数学进展Vol.11 No.8, 全文下载: PDF HTML XML DOI:10.12677/AAM.2022.118602, August 17 2022
居民收入影响因素的交叉随机效应模型分析—以云南省昆明市居民为例Cross Random Effects Model Analysis for Residents’ Income Influence Factor—Data from Kunming
贾慧芝, 安 蕾, 许 磊
社会科学前沿Vol.4 No.2, 全文下载: PDF HTML XML DOI:10.12677/ASS.2015.42014, June 30 2015
追踪市场指数的投资组合策略——以上证50指数为例A Portfolio Strategy for Tracks Market Indices—Taking the SSE 50 Index as an Example
叶茂越
运筹与模糊学Vol.13 No.6, 全文下载: PDF HTML XML DOI:10.12677/ORF.2023.136757, December 29 2023
政府R & D资助对企业自主科技创新的影响——基于门槛回归分析Influence of Government R & D Funding on Independent Scientific and Technological Innovation of Enterprises—Based on Threshold Regression Analysis
华 吟, 袁 象
社会科学前沿Vol.8 No.7, 全文下载: PDF HTML XML DOI:10.12677/ASS.2019.87155, July 9 2019