Teacher:Given a sentence in Chinese, provide an equivalent paraphrased translation in English that retains the same meaning both through the translation and the paraphrase.
Teacher: Now, understand the problem? Solve this instance: 假设因果关系是线性的，这种背景知识可以用以下结构方程模型（SEM）规范表示。
Student:
Assuming that the causal relationships are linear , this background knowledge can be expressed in the following SEM specification ( Structural Equalization Model ) .