In this paper we study the problem of collecting training samples for building enterprise taxonomies. We develop a computer-aided tool named InfoAnalyzer, which can effectively assist the enterprise to prepare large set of samples used for machine learning in text categorization. In our system, the enterprise category tree is initially defined by some keywords, then the Google search engine is used to construct a small set of labeled documents, and topic tracking algorithm based on document length normalization is applied to enlarge the training corpus on the bases of the seed stories. Furthermore, we design a method to check the consistency of the training corpus. Experiments show that the training corpus is good enough for statistical classification methods and meets human's requirements as well. Categories and Subject Descriptors I.2.7 [Artificial Intelligence]: Natural language Processing--Text Analysis; H.3.3 [Information Storage And Retrieval]: Information Search and Retrie...