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You're reading from  Neural Network Projects with Python

Product typeBook
Published inFeb 2019
Reading LevelBeginner
PublisherPackt
ISBN-139781789138900
Edition1st Edition
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Author (1)
James Loy
James Loy
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James Loy

James Loy has more than five years, expert experience in data science in the finance and healthcare industries. He has worked with the largest bank in Singapore to drive innovation and improve customer loyalty through predictive analytics. He has also experience in the healthcare sector, where he applied data analytics to improve decision-making in hospitals. He has a master's degree in computer science from Georgia Tech, with a specialization in machine learning. His research interest includes deep learning and applied machine learning, as well as developing computer-vision-based AI agents for automation in industry. He writes on Towards Data Science, a popular machine learning website with more than 3 million views per month.
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Results analysis

Let's take a deeper look into our results. In particular, we would like to know what kind of images our CNN does well in, and what kind of images it gets wrong.

Recall that the output of the sigmoid activation function in the last layer of our CNN is a list of values between 0 and 1 (one value/prediction per image). If the output value is < 0.5, then the prediction is class 0 (that is, cat) and if the output value is >= 0.5, then the prediction is class 1 (that is, dog). Therefore, an output value close to 0.5 means that the model isn't so sure, while an output value very close to 0.0 or 1.0 means that the model is very sure about its predictions.

Let's run through the images in the testing set one by one, using our model to make predictions on the class of the image, and classify the images according to three categories:

  • Strongly right...
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Neural Network Projects with Python
Published in: Feb 2019Publisher: PacktISBN-13: 9781789138900

Author (1)

author image
James Loy

James Loy has more than five years, expert experience in data science in the finance and healthcare industries. He has worked with the largest bank in Singapore to drive innovation and improve customer loyalty through predictive analytics. He has also experience in the healthcare sector, where he applied data analytics to improve decision-making in hospitals. He has a master's degree in computer science from Georgia Tech, with a specialization in machine learning. His research interest includes deep learning and applied machine learning, as well as developing computer-vision-based AI agents for automation in industry. He writes on Towards Data Science, a popular machine learning website with more than 3 million views per month.
Read more about James Loy