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Yong Yuan. I am Yong Yuan, an Algorithm Engineer in Kwai. His research interests cover large-scale image and video retrieval, approximate...

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Yongyuan.name news digest

  • 6 months

    继承、dynamic_cast、纯虚函数、protected,一场多态之旅

    背景
    做算法策略过程中,常常会存在这样一种情形:由于业务压力或者岗位性质的缘故,做算法、策略的同学(也包括我自己),对于一些工程上的实现,往往只追求尽快实现、拿到收益,而忽略了实现过程中,代码的复用性、可读性。举个例子,某模型AB版本不断迭代,当模型特征输入、推理、业务发生小的差异时,为了追求尽快实现拿到收益,会出现很多的冗余代码,代码量急剧膨胀,可行性也变得比较差,推高维护成本。
    比如在实际中遇到的一个例子:

  • 7 months

    为Cpp实现的功能提供Python API接口-Pybind11

    兴趣与业余时间开发的CVTK项目,除了继续完善和添加算法到CVTK外,还计划提供Python API,便于Python调用。在为CVTK添加Python API支持的过程中,调研了下C++/Python绑定库的情况。目前支持C++/Python绑定库,比较主流的有四大流行库,分别是:
    Pybind11
    Boost.Python

  • 9 months

    总结回顾:2021年,杯且从容

    又是一年,仿佛过了某个鞍点后,人生越过越快。想想,记一记一年的主要流水账,其实也挺好的,至少隔个五年、十年后,还能把那些年的经历,串成一根主线,知道它们是怎么关联起来的。正如乔布斯说的:
    You can’t connect the dots looking forward; you can only connect them looking backwards. So you have to trust that the dots will somehow connect in your future. You have to trust in something – your gut, destiny, life, karma, whatever....

  • 9 months

    从std::move到移动构造函数

    半年之前,写到的一个代码(示例):
    因为在搜素场景,耗时毫秒必争。cr的时候,review的同学建议改成:
    这样修改后的好处:

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