The 术语 数据 简化 is applied in a variety of contexts from reducing 复（杂） 系统 often through sophisticated 模式 matching 算法 to 手段(意味着) by which large-scale 数据 源 can be 编码 through the 使用 of 较低 密度 数据 e g MPEG to achieve an extremely 高 电平/级别 of 识别