X-Git-Url: https://git.stderr.nl/gitweb?a=blobdiff_plain;f=christiaan%2Fdotproduct.lhs;fp=christiaan%2Fdotproduct.lhs;h=4a150c9e08696181132408e470de6c59d9e5818a;hb=a6db20a6d9cfe457b5deb643932813b921a04d47;hp=0000000000000000000000000000000000000000;hpb=0c004e8c0dff6f9a4140519c8b31410f9b0c8242;p=matthijs%2Fmaster-project%2Ffinal-presentation.git

diff --git a/christiaan/dotproduct.lhs b/christiaan/dotproduct.lhs
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+%include talk.fmt
+\subsection{Dot Product}
+\begin{frame}
+   \frametitle{Dot Product}
+     \[
+     y = \overrightarrow x  \bullet \overrightarrow h 
+     \]
+\end{frame}
+
+\begin{frame}
+   \frametitle{Dot Product}
+     \[
+     y = \overrightarrow x  \bullet \overrightarrow h 
+     \]
+     \[
+     \overrightarrow x  \bullet \overrightarrow h  = \sum\nolimits_{i = 1}^n {a_1  \cdot b_1  + a_2  \cdot b_2  +  \ldots  + a_n  \cdot b_n } 
+     \]
+\end{frame}
+
+\begin{frame}
+  \frametitle{Dot Product}
+   \begin{itemize}
+    \item Two steps to define: \\
+    \[
+    \overrightarrow x  \bullet \overrightarrow h  = \sum\nolimits_{i = 1}^n {a_1  \cdot b_1  + a_2  \cdot b_2  +  \ldots  + a_n  \cdot b_n } 
+    \]
+    \begin{itemize}
+      \item \emph{Pairwise Multiplication}: \\
+      \begin{verbatim}
+      zipwith (*) xs hs =
+        < x0*h0, x1*h1, x(n-1)*h(n-1)>       
+      \end{verbatim}
+      \item \emph{Summation}: \\
+      \begin{verbatim}
+      foldl (+) 0 zs =
+        (..((0+z0)+z1)+..+z(n-1))
+      \end{verbatim}
+    \end{itemize}
+   \end{itemize}
+\end{frame}
+
+\begin{frame}
+  \frametitle{Dot Product}
+   \begin{itemize}
+    \item Two steps to define: \\
+    \[
+    \overrightarrow x  \bullet \overrightarrow h  = \sum\nolimits_{i = 1}^n {a_1  \cdot b_1  + a_2  \cdot b_2  +  \ldots  + a_n  \cdot b_n } 
+    \]
+    \begin{itemize}
+      \item \emph{Combine the two}: \\
+      \begin{verbatim}
+      xs ** hs = foldl (+) 0 (zipWith (*) xs hs)
+      \end{verbatim}
+    \end{itemize}
+   \end{itemize}
+\end{frame}
\ No newline at end of file