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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
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<title>(Extremely) Quick DL Intro</title>
<meta name="description" content="Lectures at University of Verona">
<meta name="author" content="Sergey M Plis">
<meta name="apple-mobile-web-app-capable" content="yes">
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<body>
<div class="reveal">
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<!-- In between the <div="reveal"> and the <div class="slides">-->
<!-- Any section element inside of this container is displayed as a slide -->
<div class="slides">
<section>
<section>
<p>
<h1 style="width: 150%; margin-left: -150pt;">Attention, Self-Attention, & Transformers</h2>
<h2>Selected topics in Deep Learning</h2>
<h3>in 6 hours or less</h3>
<h3>by Sergey Plis</h3>
<p>
</section>
</section>
<!-- --------------------------------------------------------------------------->
<section>
<section>
<h2>Self-Attention</h2>
</section>
<section>
<h2>Paying attention</h2>
<img src="figures/attention_flashing.gif" alt="attention" style="border:0; box-shadow: 0px 0px 0px rgba(150, 150, 255, 1);" width="50%">
</section>
<section>
<h3>The good old attention on the input</h3>
<img src="figures/KP_attention.gif" alt="attention" style="border:0; box-shadow: 0px 0px 0px rgba(150, 150, 255, 1);" width="100%">
</section>
<section>
<h3>Utility of self attention</h3>
<img src="figures/self_attention_the_animal.png" alt="attention" style="border:0; box-shadow: 0px 0px 0px rgba(150, 150, 255, 1);" width="60%">
</section>
<section>
<h3>Simpler that it sounds: project</h3>
<img src="figures/self-attention-project.png" alt="attention" style="border:0; box-shadow: 0px 0px 0px rgba(150, 150, 255, 1);" width="50%">
</section>
<section>
<h3>Simpler that it sounds: compute & remix</h3>
<img src="figures/self-attention-matrix-form.png" alt="attention" style="border:0; box-shadow: 0px 0px 0px rgba(150, 150, 255, 1);" width="100%">
</section>
<section>
</section>
</section>
<section>
<section data-vertical-align-top data-background="figures/transformers_bluepring.png" data-background-size="contain">
<h2>The Transformer Architecture</h2>
<div class='slide-footer'>
<img src="figures/attention_flashing.gif" alt="attention" style="border:0; box-shadow: 0px 0px 0px rgba(150, 150, 255, 1);" width="50%"> is all you need
</div>
</section>
<section>
<h3>Good-old seq2seq</h3>
<img src="figures/The_transformer_encoders_decoders.png" alt="attention" style="border:0; box-shadow: 0px 0px 0px rgba(150, 150, 255, 1);" width="100%">
</section>
<section>
<h3>Not sequential but "transformative"</h3>
<img src="figures/2_The_transformer_encoder_decoder_stack.png" alt="attention" style="border:0; box-shadow: 0px 0px 0px rgba(150, 150, 255, 1);" width="100%">
</section>
<section>
<h3>All transformations have identical architecture</h3>
<img src="figures/3_Transformer_encoder.png" alt="attention" style="border:0; box-shadow: 0px 0px 0px rgba(150, 150, 255, 1);" width="100%">
</section>
<section>
<h3>Decoder pays attention to encoder as well</h3>
<img src="figures/4_Transformer_decoder.png" alt="attention" style="border:0; box-shadow: 0px 0px 0px rgba(150, 150, 255, 1);" width="100%">
</section>
<section>
<h3>Encoder remixes and ...</h3>
<img src="figures/5_encoder_with_tensors.png" alt="attention" style="border:0; box-shadow: 0px 0px 0px rgba(150, 150, 255, 1);" width="100%">
</section>
<section>
<h3>... and re-encodes inputs</h3>
<img src="figures/6_encoder_with_tensors_2.png" alt="attention" style="border:0; box-shadow: 0px 0px 0px rgba(150, 150, 255, 1);" width="100%">
</section>
<section>
<h3>But engineering reality gets scarier</h3>
<img src="figures/7_transformer_resideual_layer_norm_2.png" alt="attention" style="border:0; box-shadow: 0px 0px 0px rgba(150, 150, 255, 1);" width="70%">
</section>
<section>
<h3>... and scarier</h3>
<img src="figures/8_transformer_resideual_layer_norm_3.png" alt="attention" style="border:0; box-shadow: 0px 0px 0px rgba(150, 150, 255, 1);" width="100%">
</section>
<section data-vertical-align-top data-background="figures/IT_Infrastructure_Header.jpeg" data-background-size="cover">
</section>
<section data-vertical-align-top data-background="figures/9_transformer_decoding_1.gif" data-background-size="cover">
</section>
<section data-vertical-align-top data-background="figures/10_transformer_decoding_2.gif" data-background-size="cover">
</section>
<section>
</section>
<section>
</section>
<section>
</section>
</section>
<section>
<section>
<h2>Multi-Head Attention</h2>
</section>
<section>
<h3>Utility of <alert>ambiguous</alert> self attention</h3>
<img src="figures/self_attention_ambiguous.png" alt="attention" style="border:0; box-shadow: 0px 0px 0px rgba(150, 150, 255, 1);" width="100%">
</section>
<section>
<h3>Double up on self-attention</h3>
<img src="figures/1_MHA_transformer_attention_heads_qkv.png" alt="attention" style="border:0; box-shadow: 0px 0px 0px rgba(150, 150, 255, 1);" width="100%">
</section>
<section>
<h3>Bet some more on it</h3>
<img src="figures/2_MHA_transformer_attention_heads_z.png" alt="attention" style="border:0; box-shadow: 0px 0px 0px rgba(150, 150, 255, 1);" width="100%">
</section>
<section>
<h3>Remix</h3>
<img src="figures/3_MHA_transformer_attention_heads_weight_matrix_o.png" alt="attention" style="border:0; box-shadow: 0px 0px 0px rgba(150, 150, 255, 1);" width="100%">
</section>
<section>
<h3>Full picture</h3>
<img src="figures/4_MHA_transformer_multi-headed_self-attention-recap.png" alt="attention" style="border:0; box-shadow: 0px 0px 0px rgba(150, 150, 255, 1);" width="100%">
</section>
<section>
<h3>Flexible self-attention</h3>
<img src="figures/5_MHA_transformer_self-attention_visualization_2.png" alt="attention" style="border:0; box-shadow: 0px 0px 0px rgba(150, 150, 255, 1);" width="60%">
</section>
<section>
</section>
<section>
</section>
<section>
</section>
<section>
</section>
<section>
</section>
</section>
<section>
<section>
<h2>Positional Encoding</h2>
</section>
<section>
<h3>Helping to resolve the invariance</h3>
<img src="figures/1_PE_transformer_positional_encoding_vectors.png" alt="attention" style="border:0; box-shadow: 0px 0px 0px rgba(150, 150, 255, 1);" width="100%">
</section>
<section>
<h3>Dense encoding of an index</h3>
<img src="figures/2_PE_transformer_positional_encoding_example.png" alt="attention" style="border:0; box-shadow: 0px 0px 0px rgba(150, 150, 255, 1);" width="100%">
</section>
<section>
<h3>Dense encoding of an index</h3>
<img src="figures/3_PE_transformer_positional_encoding_large_example.png" alt="attention" style="border:0; box-shadow: 0px 0px 0px rgba(150, 150, 255, 1);" width="70%">
</section>
</section>
</div>
</div>
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<div id="header-left"><h4>May 23, 2024</h4></div>
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