2019 September

    Big N!

    Using C/C++ we can’t calculate very big number of prime factors. So we use string to store it.

    Big number A+B

    The problem A+B is probably the easiest problem, however, the maxim number C/C++ can calculate is between -9223372036854775808~9223372036854775807. The bigger number can’t be calculate unless you use Python or Java. So I’m going to introduce a way to calculate the big number of A+B.

    LaTex Symbols

    Here are some symbols that are not used very usual and how to type it in LaTex.

    Linear combination and spam

    1. combination:
      $$
      \overrightarrow{v_1}, \overrightarrow{v_2}, \overrightarrow{v_3} \cdots \overrightarrow{v_n} \in \mathbb{R}^n c_1 \overrightarrow{v_1}+c_2 \overrightarrow{v_2}+\cdots+c_n \overrightarrow{v_n}\left[\left(c_1 \rightarrow c_n\right) \in \mathbb{R}\right]
      $$

    2. span: $\vec{a}, \vec{b} \in \mathbb{R}$

    JS project with code

    The code of the bouncing all and more projects.

    JS projects

    I’ve learnt Processing JavaScript a little and have some complete projects. They are very simple but I think they are not ugly.

    Matrix of LaTex

    In order to post my note of linear algebra, I need to know how to put matrix using LaTex. The followings are the usage.

    vectors and spaces

    1. intro:

      $\left[\begin{array}{lll}x & x & x\end{array}\right] \rightarrow$ element amount $(n)=n$ dimension

      $\mathbb{R}^n$ (e.g. n = 3 3 Dimension)

    Model representation

    To describe supervised learning,we establish notation for future use.

    **$x^i$ **denote the input variables also called input features

    **$y^i$ ** denote the output variables also called target variables that we are trying to predict.

    A pair **($x^i, y^i$) **is called a training set.


TOP
COMMENT
made with ❤️ by o_oyao
©o_oyao 2019-2024

|