Firm’s automated warehouses are struggling to compete against swift deliveries from stores by bike riders
Range queries ask "what's inside this box?" But sometimes the question is "what's nearest to this location?" This is the nearest neighbor problem, and you don't know how big your search radius should be. The nearest point might be right next to you or far away.，推荐阅读safew官方版本下载获取更多信息
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