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intersection cardinality approximations with Apache Pinot and Theta Sketches, which allow us to efficiently figure out the unique size of a targeted audience when factoring in multiple criteria of an advertising campaign.","image":"/static/images/twitter-card.png","url":"https://pinot.apache.org/blog/2020-02-20-LinkedIn-Thirdeye","author":[{"@type":"Person","name":"LinkedIn Engineering Team"}]}</script><section class=" px-5 pt-10 md:px-[13.313rem] md:py-16"><div class="fixed bottom-8 right-8 hidden flex-col gap-3 md:hidden"><button aria-label="Scroll To Top" class="rounded-full bg-gray-200 p-2 text-gray-500 transition-all hover:bg-gray-300 dark:bg-gray-700 dark:text-gray-400 dark:hover:bg-gray-600"><svg class="h-5 w-5" viewBox="0 0 20 20" fill="currentColor"><path fill-rule="evenodd" d="M3.293 9.707a1 1 0 010-1.414l6-6a1 1 0 011.414 0l6 6a1 1 0 01-1.414 1.414L11 5.414V17a1 1 0 11-2 0V5.414L4.707 9.707a1 1 0 01-1.414 0z" clip-rule="evenodd"></path></svg></button></div><article class=""><div class="mx-auto lg:flex"><div class="lg:pr-12"><header class="pt-6 md:pr-10"><h1 class="text-4xl font-semibold">Analyzing anomalies with ThirdEye</h1><p class="pt-2 text-lg">By: <!-- -->LinkedIn Engineering Team</p><p class="py-2 text-sm">February 20th, 2020<!-- --> • <!-- -->1 min read</p></header><div class="flex flex-col lg:flex-row"><main class=""><div class="prose max-w-[45rem] pb-8 pt-10 dark:prose-invert"><p>Focus on the behind-the-scenes functionalities of ThirdEye that analyze the multi-dimensional time series data and help our engineers understand why these anomalies happened through a dimension heatmap</p><p><a target="_blank" rel="noopener noreferrer" href="https://engineering.linkedin.com/blog/2020/analyzing-anomalies-with-thirdeye">Read More at https://engineering.linkedin.com/blog/2020/analyzing-anomalies-with-thirdeye</a></p><p><img alt="Analyzing anomalies with ThirdEye" src="https://content.linkedin.com/content/dam/engineering/site-assets/images/blog/posts/2020/02/datacube-1.png"/></p></div></main></div></div><aside class="mt-10 hidden border-l-2 pl-5 lg:sticky lg:top-1 lg:block lg:h-full"><section class="sticky top-0 mb-4 w-[15.375rem]"><div class="flex flex-col space-y-1.5 pb-3"><h3 class="text-sm font-semibold leading-snug text-neutral-500 dark:text-neutral-100">Table of Contents</h3></div><nav class="flex items-center self-start" aria-label="Table of Contents"><ol class="list-none space-y-3"></ol></nav></section></aside></div></article></section></main><footer class="border-t bg-sky-100 px-5 py-10 md:px-[6.75rem] md:pb-10 md:pt-16"><div class="mx-auto flex max-w-7xl flex-wrap justify-between"><div class="flex-shrink-0"><svg xmlns="http://www.w3.org/2000/svg" width="120" height="48" fill="none"><g fill="#C7154A" clip-path="url(#logo_svg__a)"><path d="M42.99 18.448c1.032-.553 2.21-.831 3.535-.831 1.542 0 2.938.38 4.187 1.14 1.248.76 2.236 1.841 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