% \definecolor{MidnightBlue}{cmyk}{0.98,0.13,0,0.43} % PANTONE 302
\pagecolor{yellow}
\color{black}

\bigskip

\begin{center}
{\Huge A Tour of Recommender Systems}

{\LARGE Norm Matloff 

\medskip

University of California, Davis}

\bigskip

\vspace{0.5in}

% {\LARGE GPU, Multicore, Clusters and More}

% \vspace{1in}

\includegraphics[width=2.6in]{Images/AncientYelp.jpg}

Ancient ``Yelp''

\end{center}

\vspace{1.0in}

% This book is often revised and updated, latest edition available at
% {http://heather.cs.ucdavis.edu/~matloff/158/PLN/ParProcBook.pdf} 

% The author has striven to minimize the number of errors, but no
% guarantee is made as to accuracy of the contents of this book.


\newpage

\begin{center}
\Large{\textbf{About This Book}}
\end{center}

This work is licensed under a Creative Commons Attribution-No Derivative
Works 3.0 United States License. Copyright is retained by N. Matloff in
all non-U.S. jurisdictions, but permission to use these materials in
teaching is still granted, provided the authorship and licensing
information here is displayed in each unit. I would appreciate being
notified if you use this book for teaching, just so that I know the
materials are being put to use, but this is not required.

The author has striven to minimize the number of errors, but no
guarantee is made as to accuracy of the contents of this book.
 
The cover is from the British Museum onine site,

\url{https://www.britishmuseum.org/research/collection_online/collection_object_details/collection_image_gallery.aspx?partid=1&assetid=1613004116&objectid=277770}

with descripition:

\begin{quote}
Clay tablet; letter from Nanni to Ea-nasir complaining that the wrong
grade of copper ore has been delivered after a gulf voyage and about
misdirection and delay of a further delivery...
\end{quote}

The world's first recommender system!