cleaning up

doc/pub/week36/html/week36-reveal.html

@@ -600,7 +600,7 @@ $$
 and minimizing we have that
 <p>&nbsp;<br>
 $$
-\hat{\boldsymbol{\beta}}_{\mathrm{OLS}} = \boldsymbol{y}.
+\hat{\beta}_i^{\mathrm{OLS}} = y_i.
 $$
 <p>&nbsp;<br>
 </section>
@@ -620,7 +620,7 @@ $$
 and minimizing we have that
 <p>&nbsp;<br>
 $$
-\hat{\boldsymbol{\beta}}_{\mathrm{Ridge}} = \frac{\boldsymbol{y}}{1+\lambda}.
+\hat{\beta}_i^{\mathrm{Ridge}} = \frac{y_i}{1+\lambda}.
 $$
 <p>&nbsp;<br>
 </section>

doc/pub/week36/html/week36-solarized.html

@@ -627,7 +627,7 @@ $$
 
 and minimizing we have that
 $$
-\hat{\boldsymbol{\beta}}_{\mathrm{OLS}} = \boldsymbol{y}.
+\hat{\beta}_i^{\mathrm{OLS}} = y_i.
 $$
 
 <p>
@@ -643,7 +643,7 @@ $$
 
 and minimizing we have that
 $$
-\hat{\boldsymbol{\beta}}_{\mathrm{Ridge}} = \frac{\boldsymbol{y}}{1+\lambda}.
+\hat{\beta}_i^{\mathrm{Ridge}} = \frac{y_i}{1+\lambda}.
 $$
 
 <p>

doc/pub/week36/html/week36.html

@@ -632,7 +632,7 @@ $$
 
 and minimizing we have that
 $$
-\hat{\boldsymbol{\beta}}_{\mathrm{OLS}} = \boldsymbol{y}.
+\hat{\beta}_i^{\mathrm{OLS}} = y_i.
 $$
 
 <p>
@@ -648,7 +648,7 @@ $$
 
 and minimizing we have that
 $$
-\hat{\boldsymbol{\beta}}_{\mathrm{Ridge}} = \frac{\boldsymbol{y}}{1+\lambda}.
+\hat{\beta}_i^{\mathrm{Ridge}} = \frac{y_i}{1+\lambda}.
 $$
 
 <p>

doc/pub/week36/ipynb/week36.ipynb

@@ -678,7 +678,7 @@
    "metadata": {},
    "source": [
     "$$\n",
-    "\\hat{\\boldsymbol{\\beta}}_{\\mathrm{OLS}} = \\boldsymbol{y}.\n",
+    "\\hat{\\beta}_i^{\\mathrm{OLS}} = y_i.\n",
     "$$"
    ]
   },
@@ -712,7 +712,7 @@
    "metadata": {},
    "source": [
     "$$\n",
-    "\\hat{\\boldsymbol{\\beta}}_{\\mathrm{Ridge}} = \\frac{\\boldsymbol{y}}{1+\\lambda}.\n",
+    "\\hat{\\beta}_i^{\\mathrm{Ridge}} = \\frac{y_i}{1+\\lambda}.\n",
     "$$"
    ]
   },

doc/src/week36/week36.do.txt

@@ -378,7 +378,7 @@ C(\bm{\beta})=\sum_{i=0}^{p-1}(y_i-\beta_i)^2,
 and minimizing we have that
 !bt
 \[
-\hat{\bm{\beta}}_{\mathrm{OLS}} = \bm{y}.
+\hat{\beta}_i^{\mathrm{OLS}} = y_i.
 \]
 !et
 
@@ -394,7 +394,7 @@ C(\bm{\beta})=\sum_{i=0}^{p-1}(y_i-\beta_i)^2+\lambda\sum_{i=0}^{p-1}\beta_i^2,
 and minimizing we have that
 !bt
 \[
-\hat{\bm{\beta}}_{\mathrm{Ridge}} = \frac{\bm{y}}{1+\lambda}.
+\hat{\beta}_i^{\mathrm{Ridge}} = \frac{y_i}{1+\lambda}.
 \]
 !et