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John Hany johnhany

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  • Beijing, China
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@karpathy
karpathy / nes.py
Last active June 7, 2025 14:26
Natural Evolution Strategies (NES) toy example that optimizes a quadratic function
"""
A bare bones examples of optimizing a black-box function (f) using
Natural Evolution Strategies (NES), where the parameter distribution is a
gaussian of fixed standard deviation.
"""
import numpy as np
np.random.seed(0)
# the function we want to optimize
@teamdandelion
teamdandelion / labels_1024.tsv
Last active February 6, 2024 08:33
TensorBoard: TF Dev Summit Tutorial
We can make this file beautiful and searchable if this error is corrected: No tabs found in this TSV file in line 0.
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anonymous
anonymous / pca_animation.m
Created January 26, 2017 21:47
Matlab code to produce PCA animations
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Matlab code to produce PCA animations shown here:
% http://stats.stackexchange.com/questions/2691
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Static image
clear all
rng(42)
@falcondai
falcondai / guided_relu.py
Last active April 1, 2021 09:12
Tensorflow implementation of guided backpropagation through ReLU
import tensorflow as tf
from tensorflow.python.framework import ops
from tensorflow.python.ops import gen_nn_ops
@ops.RegisterGradient("GuidedRelu")
def _GuidedReluGrad(op, grad):
return tf.select(0. < grad, gen_nn_ops._relu_grad(grad, op.outputs[0]), tf.zeros(grad.get_shape()))
if __name__ == '__main__':
with tf.Session() as sess:
@application2000
application2000 / how-to-install-latest-gcc-on-ubuntu-lts.txt
Last active October 29, 2025 19:24
How to install latest gcc on Ubuntu LTS (12.04, 14.04, 16.04)
These commands are based on a askubuntu answer http://askubuntu.com/a/581497
To install gcc-6 (gcc-6.1.1), I had to do more stuff as shown below.
USE THOSE COMMANDS AT YOUR OWN RISK. I SHALL NOT BE RESPONSIBLE FOR ANYTHING.
ABSOLUTELY NO WARRANTY.
If you are still reading let's carry on with the code.
sudo apt-get update && \
sudo apt-get install build-essential software-properties-common -y && \
sudo add-apt-repository ppa:ubuntu-toolchain-r/test -y && \
@kukuruza
kukuruza / gist_cifar10_train.py
Last active November 4, 2024 17:36
Tensorflow: visualize convolutional filters (conv1) in Cifar10 model
from math import sqrt
def put_kernels_on_grid (kernel, pad = 1):
'''Visualize conv. filters as an image (mostly for the 1st layer).
Arranges filters into a grid, with some paddings between adjacent filters.
Args:
kernel: tensor of shape [Y, X, NumChannels, NumKernels]
pad: number of black pixels around each filter (between them)
@Randommood
Randommood / opencv_v3.0.0_install_c++_project_.travis.yml
Created January 14, 2016 00:30 — forked from cgddrd/opencv_v3.0.0_install_c++_project_.travis.yml
Travis CI configuration file to install OpenCV v3.0.0 (beta) for use with C++ projects. Modified for v3.0.0 from original scripts available at: https://github.com/jayrambhia/Install-OpenCV.
language:
- cpp
compiler:
- gcc
before_install:
- sudo apt-get update
install:
@FrancesCoronel
FrancesCoronel / sampleREADME.md
Last active November 14, 2025 13:37
A sample README for all your GitHub projects.

Repository Title Goes Here

Frances Coronel

INSERT GRAPHIC HERE (include hyperlink in image)

Subtitle or Short Description Goes Here

ideally one sentence >

@mrtns
mrtns / gist:78d15e3263b2f6a231fe
Last active January 19, 2025 08:02
Upgrade Chrome from Command Line on Ubuntu
# Install
# via http://askubuntu.com/questions/510056/how-to-install-google-chrome
wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | sudo apt-key add -
sudo sh -c 'echo "deb http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google-chrome.list'
sudo apt-get update
sudo apt-get install google-chrome-stable
# Update
@mbains
mbains / gist:3406184
Created August 20, 2012 17:59
Factory pattern using C++ templates
#include <iostream>
#include <map>
using namespace std;
class BaseClass{
public:
virtual int funk() {
return 0;
}