Filtering the data we have on our GridView by dates are sometimes very important. On this article I am going to show you how easy is to add a date range filter to your Yii2 GridViews. The DateRange picker plugin For this tutorial we are going to use…
http://sphinxsearch.com/forum/view.html?id=3187 > I think I may have found a bug. Yep, it looks weird. The problem is probably that you have two attributes (MVA and timestamp) with the same name. > $this->sphinx->SetFilterRange("starts&qu…
SuRF(Succinct Range Filter)是一种快速而紧凑的过滤器,同时支持点查询和范围查询(包括开区间查询.闭区间查询.范围计数),可以在RocksDB中用SuRF来替换Bloom过滤器. FAST SUCCINCT TRIES SuRF是基于FST(Fast Succinct Tries)的,这是一种同时支持点查询和范围查询,且具有高效的空间利用率的静态字典树.FST的设计是基于如下观察结果:字典树的上层包含了相对较少的节点,但却发生了相对较多的访问,而字典树的下层包含了相对较多…
Bilateral Filtering for Gray and Color Images 双边滤波器:保留边界的平滑滤波器. 在局部上,就是在灰度值差异不大的区域平滑,在灰度值差异比较大的边界地区保留边界.所以双边滤波器作用于每个像素的同时,必然会受到领域像素点的距离.灰度值差的权重影响. 已知低通滤波可以表示为: range filter可以表示为:(range filter 试选定一个数值范围,再做滤波的一个操作) 所以,双边滤波器的定义是: 其中,k(x)是归一化(normalize)函…
Introduction One of the greatest logging tools out there for .NET is log4net. This software is the gold standard for how logging should be done. It is simple, powerful, and extensible. The best part is that it is part of the FOSS community. What coul…