- filter: = 等於
- exclude: != 不等於
- distinct: 去除重複
__exact
: 精確等於: 'aaa'
# Original source from http://asyncio.readthedocs.io/en/latest/producer_consumer.html | |
# Rewritten for Python >=3.4 | |
import asyncio | |
import random | |
@asyncio.coroutine | |
def produce(queue, n): | |
for x in range(n): |
issue:
symbol lookup error: /home/jason/anaconda3/lib/python3.6/site-packages/numpy/core/../../../../libmkl_intel_thread.so: undefined symbol: omp_get_num_procs
solved: conda/conda#2031
控制 led 燈
#define BAUDRATE 19200
#define LED_PIN 13
void setup() {
# Open CV 3 | |
sudo apt-get -y install libtiff5-dev | |
sudo apt-get -y install libavcodec-dev libavformat-dev libswscale-dev libdc1394-22-dev | |
sudo apt-get -y install libxine2-dev libv4l-dev | |
sudo apt-get -y install libgstreamer0.10-dev libgstreamer-plugins-base0.10-dev | |
sudo apt-get -y install qt5-default libgtk2.0-dev libtbb-dev | |
sudo apt-get -y install libatlas-base-dev |
用 Normal Equation 與梯度下降法比較前要先了解一下 Normal Equation 相關概念。其概念延伸自矩陣(可以先從工程數學裡面相關矩陣概念去學習)
Normal Equation 直覺解法
Normal Equation 與 梯度下降法