Simulations show that this model not only has higher recall,but also reduces the search cost and query time to the rate of 40% and 30% of Gnutella.

• 模拟实验表明；利用集合差异度构建的基于内容的搜索模型不仅具有较高的召回率；而且将搜索成本和查询时间分别降低到了Gnutella系统的40%25和30%25左右.