郭敏 :现代技术的发展促使文件飞速的形成 ,出现了许多新载休、新形式的文件 ,如难以控制的电子邮件等。如何在变幻不定的世界中捕获信息 ,避免遗失“类的记忆 ,并有效的保管这些文化遗产 ,便成了鉴定工作的一个重任。鉴定工作的关键就在于依据一个什么样的原则 ,构建一个放之 GUO Min: The development of modern technology has led to the rapid formation of documents. There have been many new documents and new forms of documents such as e-mail that are difficult to control. How to capture the information in a changing world and avoid losing the memory of these kinds of classes and to effectively keep these cultural heritages has become an important task in the field of appraisal. The key to the appraisal lies in what kind of principle it is based on It