<span class="summary">
Challenges in Building Large-Scale Information Retrieval Systems
</span>
+<br>
<a class="url" href="http://videolectures.net/wsdm09_dean_cblirs/">Second ACM International Conference on Web Search and Data Mining</a>,
<span class="location">Barcelona</span>
<abbr class="dtstart" title="20081019">Wed Nov. 19th 2008</abbr>