닫힌 형태(closed form)란 방정식(equation)의 해(solution)를 해석적(analytic)으로 표현할 수 있는 종류의 문제를 말한다. 즉, 닫힌 형태를 가지는 방정식의 해는 변수(variable), 상수(constant), 사칙연산( +−×÷), 그리고 잘 알려진 기본 함수(삼각함수, 로그함수, 제곱근 등) 등을 조합해서 “해 = …” 꼴로 표현될 수 있다. 대표적인 닫힌 형태 해(closed form solution)의 예로는 2차 방정식의 근의 공식을 들 수 있다. 닫힌 형태(closed …
우분투(Ubuntu) PyCharm 설치
1. Google에서 pycharm을 검색 2. Download 클릭 3. ~/Downloads/pycharm-community-2019.2.tar.gz 파일 확인 (2019.08.21 기준 최신 버전) & 압축 해제 tar xvfz pycharm-community-2019.2.tar.gz 4. bin 디렉토리로 이동 및 실행 cd pycharm-community-2019.2/bin/ ./pycharm.sh 5. pycharm 실행 종료 6. pycharm-community 디렉토리를 적당한 곳으로 이동 7. 심볼릭 링크(symbolic link) 생성 (root 계정 필요) ln -s /home/wanhochoi/pycharm-community-2019.2/bin/pycharm.sh /usr/bin 8. 이제 어느 …
OpenCV Python Binding Problem
Ubuntu version: 18.04.2Python version: 3.6g++ version: 7.3.0clang version: 6.0.0swig version: 3.0.12OpenCV version: 4.0.0 [C++ code] class Image { private: cv::Mat mat; public: Image() {} }; The following errors occur when importing my module after binding the above code. [Compiled by g++ with Pybind11] Segmentation fault (core dumped) [Compiled by g++ with SWIG] Traceback (most recent …
How to install Dlib on Ubuntu
Download “dlib-19.16.tar.bz2” at “http://dlib.net”. tar xvf dlib-19.16.tar.bz2 cd dlib-19.16 python setup.py installpython3 setup.py install —————– Shared Library —————– mkdir shared_buildcd shared_buildcmake -DBUILD_SHARED_LIBS=1 -DUSE_AVX_INSTRUCTIONS=ON ..cmake –build . –config Releasemake install # AVX works on processors released after 2011, which is the fastest one.# SSE2 works for most Intel or AMD chips: -DUSE_SSE2_INSTRUCTIONS=ON# SSE4 works for most …
MinGW, GVim, Make on Windows
MinGW Download & Install: mingw-w64-install.exe Register Environment Variable to PATH: C:\Program Files\mingw-w64\x86_64-8.1.0-posix-seh-rt_v6-rev0\mingw64\bin Check on cmd: gcc -v GVim Download & Install: gvim81.exe Register Environment Variable to PATH: C:\Program Files (x86)\Vim\vim81 Check on cmd: gvim Modify Configuration File: C:\Program Files (x86)\Vim\_vimrc Make Download & Install: make-3.81.exe (Complete Package) Register Environment Variable to PATH: C:\Program Files (x86)\GnuWin32\bin …
How to build TensorFlow GPU from Source Code
Environment Date: 2018.11.28 OS: Ubuntu 18.04 Graphic Card: NVIDIA Geforce 2080ti Python: 3.6.7 NVIDIA Drive & Cuda 10.0 rm /etc/apt/sources.list.d/cuda*; apt remove nvidia-cuda-toolkit; apt remove nvidia-*; apt update; apt-key adv –fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/7fa2af80.pub; bash -c ‘echo “deb http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64 /” > /etc/apt/sources.list.d/cuda.list’; apt update; apt install nvidia-driver-410; apt install cuda-10-0; [.bashrc] export PATH=/usr/local/cuda/bin:$PATH export LD_LIBRARY_PATH=/usr/local/cuda/lib64:$LD_LIBRARY_PATH nvcc -V; …
My Frequently Used LaTeX Math
{x}^{2} superscript {x}_{i} subscript \boldsymbol{A} bold \frac{x}{y} fraction \pm ± \times × \text{-} short minus \cdot ⋅ \cdots ⋯ \vdots ⋮ \begin{cases} 0 \\ 1 \end{cases} definition by Cases \left( \right) () \left{ \right} {} \; – a thick space \: – a medium space \, – a thin space \! – a negative thin space …