第四周的课程在线训练时间有点长，经常断kernel，看不到效果，最后只能提交作业运行验证对错，别的都挺不错的。

Provides great introduction to conv nets. Great Course.

Often the assignment could not be submitted and saved.

The grader bug should be looked into, wonderful course

Interesting course, but let down by the grader's bugs.

Great course to learn CNN and get familiar with keras

Add how to create object detection model from scratch

There is so much you can learn easily from Andrew Sir

Very helpful course for basic understanding of CNN's.

The programming instructions are with something wrong

It is a great course for a deep learning enthusiast.

Material is good, but too many problems with grader.

good amount of practice, some rough edges in content

Iou function had issues in week 3 .Course was good!

If more practice using convNN, it would be perfect.

还是一贯的好！但是习题没有详细解析了！然后带有 Hint 的链接，即使翻墙也看不到，这个非常影响学习！

Programming assignments could be more challenging.

Maybe it is better to add more tutorial of Keras.

Some assignments have bugs and needs to be fixed.

Tensorflow and Keras parts need better references

grader s output should be completed with feedback

Interesting course! Enjoy teacher's enthusiasm.

A bit faster in terms of programming assignments

Programming assignments are basic than expected

Excellent!

one star missing due to grader problem