理学 文本挖掘评测 释 Topic Detection and Tracking; TDT 话题检测与跟踪会议 由美国国防高级研究计划委员会（DARPA）主办的一个关于信息抽取的会议。又名TDT。
TDT 全称：Terrestrial Dynamical Time。地球力学时
数据库 数据库新技术 释文 topic detection and tracking, TDT 主题检测与跟踪 人工智能 计算语言学 释文 tonic detection and tracking, TDT 话题检测与跟踪
- Planning of Guangzhou Higher Education Mega Center
- planning of guidance to economic development
- planning of Hangzhou
- planning of Hankou British Concession
- Planning of Hongqiao Economic and Technological Development Zone
- planning of landscape plants
- planning of landscape tour
- planning of landscape tourist areas
- planning of large scale wind power base
- planning of medical and health facilities
- Planning of Moscow
- planning of Nanjing Jiangbei New Area
- planning of Nansha New District
- planning of national groundwater utilization and protection
- Planning of New York City
- planning of Palace of Versailles
- Planning of People's Square in Shanghai
- planning of regional medical center
- planning of scenic area in city
- planning of schistosomiasis prevention related with water conservancy
- planning of soil and water conservation
- planning of South Manchuria Railway Company attached land
- planning of the 1999 World Horticultural Exposition
- Planning of Tianjin Economic and Technological Development Area
- planning of Tokyo