本文以Dialog系統之書目資料庫為檢索系統，檢索者的來源則為本身具有資訊需求的國立臺灣大學教職員生。本文擬對線上資訊尋求行為進行系統化的分析，其目的在探討檢索者線上檢索時之錯誤行為及其發生位置，分析零筆資料的原因，了解時間經驗對錯誤行為的影響，並比較中美終端使用者線上資訊尋求行為之異同。　　

　　　　　The purpose of this article is to analyze the searching behavior of end users. The subjects are real end users from National Taiwan University. This article uses the DIALOG command language as its searching tool. It attempts to investigate reasons for errors and location of errors. In addition it tries to identify reasons for zero posting and compare the behavior difference between Chinese and American end users.