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# Questions tagged [notation]

Notation refers to a specific way of writing various concepts, functions, etc. Usually it is introduced to abbreviate complicated expressions and make common idioms more readable.

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### Is the semicolon (;) notation used to indicate operations are performed concurrently in backpropagation algorithm by Bengio?

I am trying to understand the backpropagation algorithm in a multi-layer perceptron environment. Algorithm 6.4 Backward computation for the deep neural network of algorithm 6.3, which uses, in ...
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### Blocks, factors and treatments in designed experiments

I have recently began studying a course on Designed Experiments and am having some trouble understanding some of the terminology. I've looked at some other answers on the site and I think that I am ...
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### Explain notation in Bishop Eq 1.60

I'm starting to work through Bishop's "Pattern Recognition and Machine Learning" book, and have run into unfamiliar notation. Eq. 160 is prefaced by saying "For this purpose, we shall ...
• 123
1 vote
456 views

### What is meant by this notation for ensemble classifier error rate

The below is a picture which denotes the error of an ensemble classifier. Can someone help me understand the notation What does it mean to have (25 and i) in brackets and what is ε^1 is it error of ...
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1 vote
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### Layer notation for convolutional neural networks

When reading about convolutional neural networks (CNNs), I often come across a special notation used in the community and in scientific papers, describing the architecture of the network in terms of ...
• 135
1 vote
145 views

### Cannot see what the "notation abuse" is, mentioned by author of book

From Sutton and Barto, Reinforcement Learning: An Introduction (second edition draft), in equation 3.4 of page 38. The probabilities given by the four-argument function p completely characterize ...
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