Course Updates - deleted contents

Hi, I find that the course 3 and course 4 in the NLP specialization has deleted 2 weeks’ content in its newly updated courses. I downloaded the notes before its update and would like to learn more about i.e. Chatbots with Reformer models, but find it being deleted when I actually start learning. So could people kindly inform me why these contents are deleted? and where can I find the learning materials now if I want to have a look at it?

Hi @Yiling_Ding

Unfortunately, I don’t think there’s a way to view the previous material (videos and code) after the Specialization was updated.
The Specialization was updated because they wanted to move away from trax to TensorFlow. As a result, learning material (for C3 and C4) had to be updated (merged and some deleted).

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