Semel realized that Yahoo did not have its own search technology and search advertising deal with the lack of software. 塞梅尔意识到，雅虎既没有掌握自有搜索技术，又缺乏处理搜索广告的软件。
In this paper, the two-point stepsize gradient method which together with one new nonmonotone line search technique is proposed. 摘要给出一个两点步长梯度方法，其将与一个新的非单调线搜索技术相结合。
