OscarZ

2020年10月28日 #

2. Understand the importance of the sampling rate

摘要: If you are given a sequence of point sampling from a continuous-time signal, but I didn't tell you the information about the sampling rate, what will 阅读全文

posted @ 2020-10-28 16:58 OscarZ 阅读(58) 评论(0) 推荐(0) 编辑

1.How rad/s can be used as the unit of the frequency?

摘要: We can measure a circle in two ways, either by its degree or by its arc length. When we walk along a circle of radius 1, we can say we walk 2pi, or we 阅读全文

posted @ 2020-10-28 15:28 OscarZ 阅读(87) 评论(0) 推荐(0) 编辑

2020年10月17日 #

5. 放几个讲Dicitionary Learning比较清晰的博客

摘要: https://blog.csdn.net/weixin_45682889/article/details/105554281?utm_medium=distribute.pc_relevant.none-task-blog-utm_term-3&spm=1001.2101.3001.4242 ht 阅读全文

posted @ 2020-10-17 17:11 OscarZ 阅读(68) 评论(0) 推荐(0) 编辑

4. 什么是压缩感知?

摘要: 以下截图转自知乎问题:如何理解压缩感知(compressive sensing)? 链接:https://www.zhihu.com/question/28552876 阅读全文

posted @ 2020-10-17 16:38 OscarZ 阅读(203) 评论(0) 推荐(0) 编辑

2020年10月14日 #

汇总EM算法的讲解

摘要: https://blog.csdn.net/v_JULY_v/article/details/81708386 https://blog.csdn.net/zouxy09/article/details/8537620 https://www.cnblogs.com/mindpuzzle/archi 阅读全文

posted @ 2020-10-14 22:23 OscarZ 阅读(65) 评论(0) 推荐(0) 编辑

3. The Greedy Algorithms

摘要: Accuracy or Complexity? 阅读全文

posted @ 2020-10-14 21:39 OscarZ 阅读(65) 评论(0) 推荐(0) 编辑

2. Define the goal for sparse representation(我们大体上用什么算法)

摘要: We are trying the find the unique sparest solution to the P0 problem One thing that we are sure about is that we do not want to use the Exhaustive Sea 阅读全文

posted @ 2020-10-14 21:37 OscarZ 阅读(105) 评论(0) 推荐(0) 编辑

About Float32 and Float64

摘要: Any number should be represented in the form of the formula above: (-1)^s: s is the sign bit M: M is the fraction bit E: is the exponential bit 1. Flo 阅读全文

posted @ 2020-10-14 16:56 OscarZ 阅读(105) 评论(0) 推荐(0) 编辑

2020年10月12日 #

1. Facts about norm(L0, L1, L2, L∞)

摘要: As a starter, I haven't dive into the math details of compress sensing. At his stage, I think I only need to understand what norm represents to see th 阅读全文

posted @ 2020-10-12 11:07 OscarZ 阅读(183) 评论(0) 推荐(0) 编辑

2020年10月11日 #

Intuition behind back-propagation

摘要: 没整明白forward-mode和reverse-mode,在这里可以找到答案 http://colah.github.io/posts/2015-08-Backprop/#fn1 记下让我印象比较深刻的三句话: “Forward-mode differentiation gave us the d 阅读全文

posted @ 2020-10-11 15:55 OscarZ 阅读(68) 评论(0) 推荐(0) 编辑

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