Launched by the Metropolitan Police in 2012, the Gangs Matrix is a database of suspected gang members in London. © Amnesty International Launched by the Metropolitan ...

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Abstract: Real-time movie recommendation systems must efficiently handle large amounts of sparse user-item interaction data while maintaining great prediction accuracy. Conventional collaborative ...

Abstract: Recovering missing values in time series is critical when performing time series analysis. And the blackouts issue studied in this paper, described as losing all the data during a certain ...