Deep Learning Course notations

Course Q&A Deep Learning Specialization Neural Networks and Deep Learning
1

Andrew is using symbols like the big R and epsilon without ever explaining what they mean. Did he explain them in an earlier course?
Lecture: https://www.coursera.org/learn/neural-networks-deep-learning/lecture/Z8j0R/binary-classification
Timestamp: 4:40

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2

Please update you post with a link to the lecture, timestamp and slide.

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3

ā€œBig Rā€ is a standard mathematical reference to the space of real numbers. It will also have a superscript that specifies how many dimensions are being considered.

ā€˜epsilonā€™ is a common variable used to refer to small changes in some experimental value.

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4

Hello Tyler,

Welcome to the community and thank you for your question.

You can find all the notations used in DLS course from the following link:

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5

Ok, I did, thank you

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6

Ok I guess it isnā€™t epsilon, itā€™s the one that looks like a fork or like a rounded capital E. You say itā€™s standard, for what kind of math?

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7

Thank you Rashmi, but that does not help. That page does not define the big R symbol or the rounded E symbol.

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8

Please post a screen capture image that shows the symbols youā€™re asking about. I donā€™t recognize ā€œrounded Eā€.

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9

\in = is in
eg:
If x \in \mathbb{R}, x belongs to the set of real numbers.

Please see

  1. Basic concepts and notation section here
  2. Set builder notation
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