9. Deep Learning and Variants_Lecture 7_20240211Convolutional Neural Networks: Multi-Channel Input Quiz
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Questions and Answers

What is one of the key characteristics of the visual system's image building process?

  • Scattered feature representation
  • Random feature engineering
  • Global connectivity
  • Hierarchical feature development (correct)

In the context of computer vision, what does ILSVRC stand for?

  • ImageNet Large-Scale Visual Recognition Challenge (correct)
  • International Learning System Visual Recognition Competition
  • Intelligent Large-Scale Visual Recognition Consortium
  • Image Learning and Vision Recognition Challenge

What was the machine error rate for ILSVRC in 2011?

  • ~30% (correct)
  • ~10%
  • ~5%
  • ~15%

Which neural network model won the ILSVRC in 2015 with an error rate of 3.6%?

<p>Microsoft ResNet (D)</p> Signup and view all the answers

What is the primary action of a convolution layer in neural networks?

<p>Parameter sharing within the network (C)</p> Signup and view all the answers

How are feature maps created in convolutional neural networks?

<p>By applying a kernel to specific regions of the input image (A)</p> Signup and view all the answers

What is the purpose of convolution in deep learning?

<p>To extract features from images (A)</p> Signup and view all the answers

What type of input is sent to the convolution layer?

<p>Extracted features from the images (B)</p> Signup and view all the answers

In a 3-layer convolution, what is the result of multiplying and summing the values?

<p>13 (C)</p> Signup and view all the answers

What is produced by sliding a filter over the width and height of the input volume?

<p>2-dimensional activation map (B)</p> Signup and view all the answers

How many filters are there in each CONV layer, according to the text?

<p>6 filters (B)</p> Signup and view all the answers

What does the network learn filters for, as mentioned in the text?

<p>Visual features such as edges or colors (C)</p> Signup and view all the answers

What is the output dimension of a 3D convolution as mentioned in the text?

<p>2D output (D)</p> Signup and view all the answers

What is stacked along the depth dimension to produce the output volume?

<p>Activation maps (A)</p> Signup and view all the answers

What is the purpose of the pooling operation in convolutional neural networks?

<p>To enhance local translational invariance (A)</p> Signup and view all the answers

What is the role of the max-pooling layer in a convolutional neural network?

<p>To reduce the spatial dimensions of the feature maps (C)</p> Signup and view all the answers

In convolutional neural networks, how does the pooling operation contribute to dimensionality reduction?

<p>By reducing the size of each feature map while retaining important information (D)</p> Signup and view all the answers

What is the purpose of applying convolutional operations at different locations with some overlap in convolutional neural networks?

<p>To capture spatial hierarchies and local patterns in the data (C)</p> Signup and view all the answers

How does the concept of local translational invariance benefit convolutional neural networks?

<p>It allows networks to generalize well to translations in input data (B)</p> Signup and view all the answers

What role do filters/kernels play in convolutional neural networks?

<p>Extracting features from the input using weighted operations (B)</p> Signup and view all the answers

How does max-pooling contribute to reducing overfitting in convolutional neural networks?

<p>By reducing spatial dimensions and preventing co-adaptation of features (A)</p> Signup and view all the answers

What did Hubel and Wiesel discover in their experiments involving a cat's primary visual cortex?

<p>Neurons firing rapidly when presented with lines at one angle (D)</p> Signup and view all the answers

What term did Hubel and Wiesel use to describe neurons that responded best to lines of a certain angle?

<p>Simple cells (B)</p> Signup and view all the answers

How did Hubel and Wiesel differentiate between 'simple cells' and 'complex cells' in their experiments?

<p>'Simple cells' responded best to lines at one angle, while 'complex cells' responded to moving lines at another angle. (A)</p> Signup and view all the answers

In the context of the Hubel and Wiesel experiments, what did the term 'feature extraction' primarily refer to?

<p>Extracting features from images through hand-engineered filters (D)</p> Signup and view all the answers

How did the limitations of traditional vision approaches differ from the scientific findings of Hubel and Wiesel?

<p>Traditional vision required explicit feature engineering, unlike the brain's handling as observed by Hubel and Wiesel. (C)</p> Signup and view all the answers

What was one significant outcome of the Hubel and Wiesel experiments?

<p>They won a Nobel Prize in 1981 for expanding scientific knowledge on sensory processing. (C)</p> Signup and view all the answers

How did the brain's natural processing differ from the hand-engineered filters used in traditional vision approaches?

<p>Hand-engineered filters focused on feature extraction, which was not observed in the brain's natural handling. (C)</p> Signup and view all the answers

What is the size of the feature map in the Convolution2D operation in Artificial Neural Networks (ANN)?

<p>3x3 (D)</p> Signup and view all the answers

In Convolution2D, what is the size of the convolution window used?

<p>3x3 (D)</p> Signup and view all the answers

What does the text mention about the weights in Convolution2D operation?

<p>Weights are shared (D)</p> Signup and view all the answers

In which operation do we consider nodes to be locally connected according to the text?

<p>Convolution2D operation (A)</p> Signup and view all the answers

What is a key difference mentioned regarding the input handling between CNN and dense layer processing?

<p>CNN extracts features from images before sending to dense layer (A)</p> Signup and view all the answers

What type of learning is associated with Convolutional Neural Networks (CNN) according to the text?

<p>Supervised learning (D)</p> Signup and view all the answers

What is a characteristic of filters/weights in the context of Convolution2D operation?

<p>Most weights are constrained to be zero (regularization) (C)</p> Signup and view all the answers

What is the dimension of the input handled by Convolution2D operation in ANN?

<p>(5,5) (C)</p> Signup and view all the answers

What operation involves sending extracted features from images, according to the content?

<p>CNN processing with feature extraction step (A)</p> Signup and view all the answers

What kind of connections do we consider for nodes in Convolution2D operation?

<p>Locally connected nodes (D)</p> Signup and view all the answers

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