决定人类社会进步速度的较本质的制约要素是“认知的边界”,所谓知识的边界则是基于前人的经验与规则所构建的无形的域。 就像《楚门的世界》当中,剧组为楚门所构建的整个生态,无形的禁锢了他认识问题,解决问题的能力。而当人的认知和判断无法满足不断增长的数据维度和问题复杂度时,依靠人的知识和经验去驱动和创造的过程就会有边界。以图像识别为例,基于人类经验的数据分析方法,首先使用滤波器对原始图像经行降噪,在使用滤波器经行图像边界识别,较终使用模式识别的方法分辨图像中不同的物体。这样的方式,其核心在于滤波器的选择,滤波器的参数配置以及分类器的选择都需要经验支持,不同的组合形式其较终模型输出的结果差距明显。如今使用的基于深度学习的CNN方法,将滤波器的类型及参数选择基于依赖于较终分类器输出结果的表现,使用反向传播算法,不断优化模型结构与参数。这样的方法,基于大量原始数据,从数据中发现规律,提取有效特征,较终实现更加准确地决策支持。
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