[R] Linear Mixed-Effects Model

[刘顺]

Dear R Help:
What does "lmer(responce ~ factor1*factor2 + (factor1*factor2 | group1) + (factor1*factor2| group2), data)" mean?
And
"lmer(responce ~ factor1*factor2 + (factor1*factor2 | group1) + (factor1*factor2| group2), data)" vs. "lmer(responce ~ factor1*factor2 + (factor1+factor2 | group1) + (factor1+factor2| group2), data)"?
And
Experiment includes 2 factors ,2 group structrues and 1 response,I want to use Mixed-Effects Model.How to express the full model with R
	[[alternative HTML version deleted]]