我有一个以 Pr_Matrix 命名的 ConcurrentDictionary:
ConcurrentDictionary<int, ConcurrentDictionary<int, float>> Pr_Matrix = new ConcurrentDictionary<int, ConcurrentDictionary<int, float>>();
以下代码的目的是将data_set.Set_of_Point数据集中每对点之间的相似度值添加到该字典中。
foreach (var point_1 in data_set.Set_of_Point)
{
foreach (var point_2 in data_set.Set_of_Point)
{
int point_id_1 = point_1.Key;
int point_id_2 = point_2.Key;
float similarity = selected_similarity_measure(point_1.Value, point_2.Value);
Pr_Matrix.AddOrUpdate(point_id_1,
new ConcurrentDictionary<int, float>() { Keys = { point_id_2 }, Values = { similarity } },
(x, y) => y.AddOrUpdate(point_id_2, similarity, (m, n) => n));
}
}
我无法更新存在于主 ConcurrentDictionary 中的 ConcurrentDictionarys。