Lesson 308

NLP & Computer Vision

Convolution · Attention · Representations

1:00

How convolutional networks teach machines to see, and how attention-based language models teach machines to read — two fields, one shared engine of learned representations.

By the end, you can

  • Explain what "learned representations" means and why it is the shared engine of vision and language.
  • Describe an image as a numerical tensor and state its three dimensions.
  • Apply the convolution output-size formula (W − K + 2P) / S + 1 to compute a feature map's dimensions.
  • Explain spatial locality and parameter sharing, and state what property the latter gives a filter.
  • Describe the three-layer feature hierarchy produced by stacking convolution layers.
  • Distinguish classification, detection, and segmentation by the spatial precision of their outputs.
  • Explain how word embeddings encode semantic relationships as directions in vector space.
  • Describe the vanishing-gradient problem in RNNs and explain how self-attention addresses it.
  • Define the roles of Query, Key, and Value in self-attention.
  • Explain how LLMs are trained (next-token prediction, self-supervised, pretrain then fine-tune).
  • Articulate the distinction between statistical pattern matching and human comprehension, and why it matters.
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