经济模型可由各类数据1LJ2以检验,并依特定问题4u8M数据由之产生的具体情UYSe而被解释者加以评价Dwwc
Petkova,Ralitsa,DotheFama-Frenchfactorsproxyforinnovationsinpredictivevariables?Journaloffinance,Apr2006,61(2):581-612