Data Science Lecture 6: Understanding Convolutional Neural Networks (CNN)

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Questions and Answers

What is the main focus of Convolutional Neural Networks (CNN)?

  • Speech recognition
  • Natural language processing
  • Tabular data analysis
  • Object detection in images (correct)

Why are Convolutional Neural Networks (CNNs) used instead of Feed-Forward Neural Nets for image data?

  • Feed-Forward Neural Nets are more accurate
  • Feed-Forward Neural Nets cannot handle pixel values
  • CNNs require less computational resources
  • CNNs can assign importance to various aspects/objects in the image (correct)

What is the primary aim of Computer Vision?

  • Replicating human vision and understanding of surroundings (correct)
  • Recognizing handwriting
  • Processing tabular data efficiently
  • Understanding human speech

In which field of application are Convolutional Neural Networks (CNNs) influential?

<p>Computer Vision (C)</p> Signup and view all the answers

What type of data is specifically dealt with by Convolutional Neural Networks (CNNs)?

<p>Image and video data (B)</p> Signup and view all the answers

What is the purpose of applying Convolutional Neural Networks (CNNs) to visual data?

<p>Object detection and classification (D)</p> Signup and view all the answers

What is the benefit of using CNNs over Feed-Forward Neural Nets for image data?

<p>CNNs can efficiently scale for image data without increasing complexity (C)</p> Signup and view all the answers

Why were computers before GPUs unable to process large amounts of image data within a reasonable time?

<p>Due to the high computational and memory requirements (C)</p> Signup and view all the answers

How do convolutional neural networks process images as opposed to feedforward neural networks?

<p>CNNs look at one patch of an image at a time and move forward to derive complete information (D)</p> Signup and view all the answers

In which application can CNNs be useful for identifying unique facial features and comparing collected data with existing records?

<p>Facial recognition (A)</p> Signup and view all the answers

What is one valuable application of CNNs in medical imaging?

<p>Better accuracy in identifying tumors or anomalies in X-ray and MRI images (D)</p> Signup and view all the answers

How does CNN benefit document analysis?

<p>By identifying words and phrases associated with the subject of a given document (B)</p> Signup and view all the answers

What was a limitation of computers before GPUs in processing large amounts of image data?

<p>High computational and memory requirements (D)</p> Signup and view all the answers

How does CNN handle image data complexity compared to Feed-Forward Neural Nets?

<p>CNNs scale for image data without increasing complexity (D)</p> Signup and view all the answers

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