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１ 有效性第一应是网络信息检索工具开发的基本方针 网络用户只需要能为他们解决检索问题的网络信息检索工具，一个在网络信息检索中十分有效的检索工具也才有使用价值。 所以，保证网络信息检索工具的有效性，应是其开发的基本方针，这需要从下列多方面着手。２ 稳妥地解决汪
1 Effectiveness should be the basic guideline for the development of Web information retrieval tools Web users only need the Web information retrieval tools that can solve the retrieval problems for them, and a very effective retrieval tool in the retrieval of Web information is valuable. Therefore, to ensure the effectiveness of network information retrieval tools should be its development of the basic principles, which need to start from the following aspects. 2 Solve the problem properly