As for personalization recommendation technology, paper lucubrates the technology of based rule and information filtering. 在个性化推荐技术方面，论文全面研究了基于规则的技术以及信息过滤技术，比较了两种技术的优点和缺点，深入分析了不同的过滤模型的特点以及应用范围。
Beijing Prasidha filtering technology development company is the first development and production of cellular wirewound filter professional manufacturing units. 北京希达过滤技术开发公司是国内第一家研制和生产蜂房式线绕滤芯的专业制造单位。
