Google has fished out some 1.2 million pages, 22,000 apps, and 15,000 websites from ad network for breaching policies around deceitful, hostile or other poor-quality content. These included 74,000 pages and 190,000 ads that violated its “dangerous or derogatory” content policy.
As for the website it has created 330 new detection classifiers to find out specific pages that are violating policies. The company has also made some other adjustments on how ads work which are directed towards page publishers such as the introduction of page-level “auto-ads” last year. This is not in connection with the 330 detection classifiers; however, they go on to show the advances that Google is making on how it can improve and control the ad traffic within itself.