From 1991 to 2005, China's High Technology Research and Development Program (HTRDP) sponsored a series of technology evaluations on Chinese information processing and intelligent human-machine interface, which is called HTRDP evaluations, or "863" evaluations in brief. This paper introduces the HTRDP evaluations in detail. The general information of the HTRDP evaluation is presented first, including the history, the concerned technology categories, the organizer, the participants, and the

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... ure, etc. Then the evaluations on each technology are described in detail respectively, covering Chinese word segmentation, machine translation, acoustic speech recognition, text to speech, text summarization, text categorization, information retrieval, character recognition, and face detection and recognition. For the evaluations on each technology categories, the history, the evaluation tasks, the data, the evaluation method, etc., are given. The last section concludes the paper and discusses possible future work.