Suddenly, I feel that there are more and more functions or grammars in octave. It is easy to forget, and I can’t do it without summarizing, and I don’t want to read the previous ones. Let’s memorize it from now on, it’s not too late.
Note: For details, you can use help xxx to query the usage of xxx
0 some gibberish syntax
Many predecessors have summed it up, so I won't write it again. Here are the favorites (in no particular order), thank you Chicory:
Octave Basic Operation
Programming Exercise (1): Linear Regression
Octave Quick Start (2) - Data Loading , store, modify
1. fminunc
fminunc can be used as a gradient descent method, and it is much faster than gradient descent, it is an advanced algorithm.
Finally, if the initialTheta in fminunc is 2-dimensional or above, it cannot be a real number. [Introduction to calling method]
2. fmincg
See Wu Enda Machine Learning's ex3 homework 2 for details
3. [ ] and reshape
[ ] is used to turn the matrix into one element, and then arrange it row by row. reshape is to arrange and link
elements within a given range of a matrix according to a given size
