本文整理汇总了C++中wplist::at方法的典型用法代码示例。如果您正苦于以下问题：C++ wplist::at方法的具体用法？C++ wplist::at怎么用？C++ wplist::at使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类wplist的用法示例。
在下文中一共展示了wplist::at方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: bicriteria_to_coreset
void kmeans_compressor::bicriteria_to_coreset(
wplist& src,
wplist& bicriteria,
csize_t dstsize,
wplist& dst) {
if (bicriteria.size() == 0) {
dst = src;
return;
}
double weight_sum = 0;
double squared_min_dist_sum = 0;
for (wplist::iterator it = src.begin(); it != src.end(); ++it) {
std::pair<int, double> m = min_dist(*it, bicriteria);
(*it).free_long = m.first;
(*it).free_double = m.second;
bicriteria.at((*it).free_long).free_double += (*it).weight;
squared_min_dist_sum += pow((*it).free_double, 2) * (*it).weight;
weight_sum += (*it).weight;
}
std::vector<double> weights;
double sumw = 0;
double prob = 0;
for (wplist::iterator it = src.begin(); it != src.end(); ++it) {
weighted_point p = *it;
weighted_point bp = bicriteria.at(p.free_long);
prob = get_probability(p, bp, weight_sum, squared_min_dist_sum);
(*it).free_double = prob;
weights.push_back(prob);
sumw += prob;
}
discrete_distribution d(weights.begin(), weights.end());
std::vector<size_t> ind(dstsize);
std::generate(ind.begin(), ind.end(), d);
for (std::vector<size_t>::iterator it = ind.begin(); it != ind.end(); ++it) {
weighted_point sample = src.at(*it);
sample.weight = 1.0 / dstsize * sumw / sample.free_double * sample.weight;
sample.free_double = 0;
sample.free_long = 0;
dst.push_back(sample);
}
}