List of Articles رگرسیون لاسوی گروهی تطبیق یافته Open Access Article Abstract Page Full-Text 1 - Nonparametric model test by using adaptive group LASSO method to identify the effective features in predicting the expected returns of stock portfolios Raheleh ossadat Mortazavi Hamidreza Vakilifard Ghodratallah Talebnia seyedeh mahboobeh jafari