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felipegonzalez committed Oct 16, 2023
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22 changes: 11 additions & 11 deletions 06-redes-neuronales-1.html
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Expand Up @@ -707,13 +707,13 @@ <h2 data-number="6.2" class="anchored" data-anchor-id="interacciones-en-redes-ne
<div class="cell-output cell-output-stdout">
<pre><code>[[1]]
[,1]
[1,] -5.422091
[2,] 4.781280
[3,] 5.289693
[4,] -5.083941
[1,] -5.422077
[2,] 4.781271
[3,] 5.289690
[4,] -5.083926

[[2]]
[1] 2.370601</code></pre>
[1] 2.370607</code></pre>
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<p><strong>Ejercicio</strong>: interpreta la red en términos de qué unidades están <em>encendidas</em> (valor cercano a 1) o <em>apagadas</em> (valor cercano a 0). ¿Puedes ajustar este modelo con dos tres unidades intermedias? Haz varias pruebas: ¿qué dificultades encuentras?</p>
Expand Down Expand Up @@ -1086,12 +1086,12 @@ <h3 class="unnumbered anchored" data-anchor-id="ejemplo-regresión">Ejemplo (reg
<span id="cb54-2"><a href="#cb54-2" aria-hidden="true" tabindex="-1"></a>preds <span class="sc">|&gt;</span> <span class="fu">head</span>()</span></code><button title="Copiar al portapapeles" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output cell-output-stdout">
<pre><code> [,1]
[1,] 9.117618
[2,] 22.663441
[3,] 8.569652
[4,] 8.558598
[5,] 8.842549
[6,] 8.559493</code></pre>
[1,] 9.117623
[2,] 22.663464
[3,] 8.569628
[4,] 8.558584
[5,] 8.842519
[6,] 8.559466</code></pre>
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<p>Y obtenemos el siguiente resultado:</p>
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10 changes: 5 additions & 5 deletions 08-clasificacion-1.html
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Expand Up @@ -2611,16 +2611,16 @@ <h2 data-number="8.8" class="anchored" data-anchor-id="ejercicio-datos-de-diabet
<div class="cell-output cell-output-stdout">
<pre><code>[[1]]
[,1]
[1,] 0.34734303
[1,] 0.34734306
[2,] 1.01705003
[3,] -0.05472932
[4,] -0.02247143
[5,] 0.51263177
[6,] 0.55927491
[4,] -0.02247145
[5,] 0.51263183
[6,] 0.55927497
[7,] 0.45200703

[[2]]
[1] -0.9558301</code></pre>
[1] -0.9558302</code></pre>
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<p>que coinciden con los valores que obtuvimos usando regresión logística de <em>glm</em>. La única diferencia es que el algoritmo de optimización que se usa en cada caso es diferente: con <em>keras</em> utilizamos descenso en gradiente, mientras que <em>glm</em> usa Newton-Raphson.</p>
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6 changes: 3 additions & 3 deletions 09-clasificacion-2.html
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Expand Up @@ -726,8 +726,8 @@ <h4 class="unnumbered anchored" data-anchor-id="ejemplo-2">Ejemplo</h4>
3 0.00345 0.00448 1
4 0.00406 0.00897 1
5 0.00437 0.0135 1
6 0.00475 0.0224 1
7 0.00485 0.0269 1
6 0.00476 0.0224 1
7 0.00486 0.0269 1
8 0.00504 0.0314 1
9 0.00512 0.0359 1
10 0.00562 0.0404 1
Expand Down Expand Up @@ -812,7 +812,7 @@ <h4 class="unnumbered anchored" data-anchor-id="ejemplo-2">Ejemplo</h4>
modelo .metric .estimator .estimate
&lt;chr&gt; &lt;chr&gt; &lt;chr&gt; &lt;dbl&gt;
1 IMC y edad roc_auc binary 0.761
2 Todas roc_auc binary 0.866</code></pre>
2 Todas roc_auc binary 0.864</code></pre>
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<p>En este ejemplo, vemos que casi no importa qué perfil de especificidad y sensibilidad busquemos: el clasificador que usa todas las variables domina casi siempre al clasificador que sólo utiliza IMC y edad.</p>
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