假设函数（Hypothesis Function）是指用数学的方法描述自变量（X_i）和因变量（Y_i）之间的关系，它们之间可以是一个线性函数或非线性函数。

单项选择题Which following one is false？（）

A.The attribute values and classlabels may suffer from stochasticnoise，systematic noise，and random artefacts.
B.The quality of the induced classifier depends ontraining examples.
C.Apart from low error rate，some applications require that the classifer provides the reasons behind the classification.
D.The simplest performance criterion is rmse.

判断题Is the following statement true or false? The evaluation function is a function used to estimate the value or goodness of a position in minimax and related algorithms, and typically desigened to prioritize spped over accuracy.

单项选择题The error rate is usually higher on the testing set than on the training set. Is it true？（）

A.Yes
B.No

单项选择题Which of these is a reasonable definition of machine learning？（）

A.Machine learning is the field of study that gives computers the ability to learn without being explicitly programmed.
B.Machine learning is the field of allowing robots to acti ntelligently.
C.Machine learning is the science of programming computers.
D.Machine learning learns from labeleddata.

单项选择题Suppose you are working on stock market prediction. You would like to predict whether or not a certain company will win a patent infringement lawsuit (by training on data of companies that had to defend against similar lawsuits). Would you treat this as a classification or a regression problem？（）

A.Classification
B.Regression