The previous sections addressed how the udm can support interactive exploration of data 前面的部分解决了udm如何支持交互式数据浏览的问题。
2.
Interactive exploration by users requires fast response times . this requirement presents challenges given the very large data sets over which such exploration is frequently conducted 由于这种数据浏览频繁进行,而它所涉及的数据集又非常大,因此这个要求给人们提出了一道难题。