摘要:
Programming Ability Test (PAT) is organized by the College of Computer Science and Technology of Zhejiang University. Each test is supposed to run sim 阅读全文
摘要:
Notice that the number 123456789 is a 9-digit number consisting exactly the numbers from 1 to 9, with no duplication. Double it we will obtain 2469135 阅读全文
摘要:
1.如何改进性能不好的学习算法 图1.运用到测试集上效果不佳 当进行一个正则化线性回归时,最小化了代价函数得到参数,但是运用到新的测试集上,发现效果不好,那么如何改进? 1).增加训练集。但是实际上花费的时间更多,效果并不好。 2).选取更小的特征集合。 3).获取更多特征。 4).加入多项式特征项 阅读全文
摘要:
1.Linear Regression with Multiple Variables 转自:https://blog.csdn.net/mupengfei6688/article/details/53098735 1.Suppose m=4 students have taken some cla 阅读全文